author | darcy |
Wed, 25 Apr 2018 22:12:06 -0700 | |
changeset 49895 | 661ef62a6618 |
parent 49203 | 3a225d9cabe1 |
child 53653 | 868611f0adc3 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1994, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.lang; |
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import java.util.Arrays; |
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import jdk.internal.HotSpotIntrinsicCandidate; |
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/** |
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* A thread-safe, mutable sequence of characters. |
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* A string buffer is like a {@link String}, but can be modified. At any |
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* point in time it contains some particular sequence of characters, but |
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* the length and content of the sequence can be changed through certain |
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* method calls. |
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* <p> |
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* String buffers are safe for use by multiple threads. The methods |
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* are synchronized where necessary so that all the operations on any |
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* particular instance behave as if they occur in some serial order |
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* that is consistent with the order of the method calls made by each of |
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* the individual threads involved. |
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* <p> |
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* The principal operations on a {@code StringBuffer} are the |
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* {@code append} and {@code insert} methods, which are |
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* overloaded so as to accept data of any type. Each effectively |
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* converts a given datum to a string and then appends or inserts the |
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* characters of that string to the string buffer. The |
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* {@code append} method always adds these characters at the end |
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* of the buffer; the {@code insert} method adds the characters at |
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* a specified point. |
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* <p> |
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* For example, if {@code z} refers to a string buffer object |
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* whose current contents are {@code "start"}, then |
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* the method call {@code z.append("le")} would cause the string |
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* buffer to contain {@code "startle"}, whereas |
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* {@code z.insert(4, "le")} would alter the string buffer to |
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* contain {@code "starlet"}. |
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* <p> |
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* In general, if sb refers to an instance of a {@code StringBuffer}, |
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* then {@code sb.append(x)} has the same effect as |
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* {@code sb.insert(sb.length(), x)}. |
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* <p> |
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* Whenever an operation occurs involving a source sequence (such as |
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* appending or inserting from a source sequence), this class synchronizes |
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* only on the string buffer performing the operation, not on the source. |
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* Note that while {@code StringBuffer} is designed to be safe to use |
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* concurrently from multiple threads, if the constructor or the |
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* {@code append} or {@code insert} operation is passed a source sequence |
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* that is shared across threads, the calling code must ensure |
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* that the operation has a consistent and unchanging view of the source |
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* sequence for the duration of the operation. |
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* This could be satisfied by the caller holding a lock during the |
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* operation's call, by using an immutable source sequence, or by not |
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* sharing the source sequence across threads. |
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* <p> |
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* Every string buffer has a capacity. As long as the length of the |
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* character sequence contained in the string buffer does not exceed |
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* the capacity, it is not necessary to allocate a new internal |
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* buffer array. If the internal buffer overflows, it is |
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* automatically made larger. |
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* <p> |
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* Unless otherwise noted, passing a {@code null} argument to a constructor |
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* or method in this class will cause a {@link NullPointerException} to be |
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* thrown. |
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* <p> |
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* As of release JDK 5, this class has been supplemented with an equivalent |
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* class designed for use by a single thread, {@link StringBuilder}. The |
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* {@code StringBuilder} class should generally be used in preference to |
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* this one, as it supports all of the same operations but it is faster, as |
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* it performs no synchronization. |
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* |
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* @apiNote |
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* {@code StringBuffer} implements {@code Comparable} but does not override |
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* {@link Object#equals equals}. Thus, the natural ordering of {@code StringBuffer} |
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* is inconsistent with equals. Care should be exercised if {@code StringBuffer} |
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* objects are used as keys in a {@code SortedMap} or elements in a {@code SortedSet}. |
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* See {@link Comparable}, {@link java.util.SortedMap SortedMap}, or |
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* {@link java.util.SortedSet SortedSet} for more information. |
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* |
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* @author Arthur van Hoff |
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* @see java.lang.StringBuilder |
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* @see java.lang.String |
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* @since 1.0 |
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*/ |
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public final class StringBuffer |
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extends AbstractStringBuilder |
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implements java.io.Serializable, Comparable<StringBuffer>, CharSequence |
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{ |
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/** |
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* A cache of the last value returned by toString. Cleared |
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* whenever the StringBuffer is modified. |
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*/ |
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private transient String toStringCache; |
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/** use serialVersionUID from JDK 1.0.2 for interoperability */ |
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static final long serialVersionUID = 3388685877147921107L; |
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/** |
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* Constructs a string buffer with no characters in it and an |
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* initial capacity of 16 characters. |
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*/ |
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@HotSpotIntrinsicCandidate |
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public StringBuffer() { |
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super(16); |
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} |
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/** |
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* Constructs a string buffer with no characters in it and |
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* the specified initial capacity. |
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* |
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* @param capacity the initial capacity. |
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* @throws NegativeArraySizeException if the {@code capacity} |
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* argument is less than {@code 0}. |
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*/ |
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@HotSpotIntrinsicCandidate |
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public StringBuffer(int capacity) { |
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super(capacity); |
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} |
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/** |
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* Constructs a string buffer initialized to the contents of the |
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* specified string. The initial capacity of the string buffer is |
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* {@code 16} plus the length of the string argument. |
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* |
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* @param str the initial contents of the buffer. |
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*/ |
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@HotSpotIntrinsicCandidate |
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public StringBuffer(String str) { |
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super(str.length() + 16); |
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append(str); |
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} |
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/** |
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* Constructs a string buffer that contains the same characters |
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* as the specified {@code CharSequence}. The initial capacity of |
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* the string buffer is {@code 16} plus the length of the |
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* {@code CharSequence} argument. |
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* <p> |
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* If the length of the specified {@code CharSequence} is |
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* less than or equal to zero, then an empty buffer of capacity |
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* {@code 16} is returned. |
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* |
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* @param seq the sequence to copy. |
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* @since 1.5 |
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*/ |
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public StringBuffer(CharSequence seq) { |
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this(seq.length() + 16); |
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append(seq); |
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} |
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/** |
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* Compares two {@code StringBuffer} instances lexicographically. This method |
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* follows the same rules for lexicographical comparison as defined in the |
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* {@linkplain java.lang.CharSequence#compare(java.lang.CharSequence, |
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* java.lang.CharSequence) CharSequence.compare(this, another)} method. |
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* |
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* <p> |
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* For finer-grained, locale-sensitive String comparison, refer to |
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* {@link java.text.Collator}. |
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* |
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* @implNote |
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* This method synchronizes on {@code this}, the current object, but not |
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* {@code StringBuffer another} with which {@code this StringBuffer} is compared. |
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* |
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* @param another the {@code StringBuffer} to be compared with |
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* |
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* @return the value {@code 0} if this {@code StringBuffer} contains the same |
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* character sequence as that of the argument {@code StringBuffer}; a negative integer |
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* if this {@code StringBuffer} is lexicographically less than the |
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* {@code StringBuffer} argument; or a positive integer if this {@code StringBuffer} |
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* is lexicographically greater than the {@code StringBuffer} argument. |
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* |
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* @since 11 |
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*/ |
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@Override |
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public synchronized int compareTo(StringBuffer another) { |
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return super.compareTo(another); |
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} |
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@Override |
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public synchronized int length() { |
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return count; |
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} |
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@Override |
2 | 208 |
public synchronized int capacity() { |
33663 | 209 |
return super.capacity(); |
2 | 210 |
} |
211 |
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212 |
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@Override |
2 | 214 |
public synchronized void ensureCapacity(int minimumCapacity) { |
33663 | 215 |
super.ensureCapacity(minimumCapacity); |
2 | 216 |
} |
217 |
||
218 |
/** |
|
219 |
* @since 1.5 |
|
220 |
*/ |
|
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@Override |
2 | 222 |
public synchronized void trimToSize() { |
223 |
super.trimToSize(); |
|
224 |
} |
|
225 |
||
226 |
/** |
|
227 |
* @throws IndexOutOfBoundsException {@inheritDoc} |
|
228 |
* @see #length() |
|
229 |
*/ |
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@Override |
2 | 231 |
public synchronized void setLength(int newLength) { |
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toStringCache = null; |
2 | 233 |
super.setLength(newLength); |
234 |
} |
|
235 |
||
236 |
/** |
|
237 |
* @throws IndexOutOfBoundsException {@inheritDoc} |
|
238 |
* @see #length() |
|
239 |
*/ |
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@Override |
2 | 241 |
public synchronized char charAt(int index) { |
33663 | 242 |
return super.charAt(index); |
2 | 243 |
} |
244 |
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245 |
/** |
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* @throws IndexOutOfBoundsException {@inheritDoc} |
2 | 247 |
* @since 1.5 |
248 |
*/ |
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@Override |
2 | 250 |
public synchronized int codePointAt(int index) { |
251 |
return super.codePointAt(index); |
|
252 |
} |
|
253 |
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254 |
/** |
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* @throws IndexOutOfBoundsException {@inheritDoc} |
2 | 256 |
* @since 1.5 |
257 |
*/ |
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@Override |
2 | 259 |
public synchronized int codePointBefore(int index) { |
260 |
return super.codePointBefore(index); |
|
261 |
} |
|
262 |
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263 |
/** |
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* @throws IndexOutOfBoundsException {@inheritDoc} |
2 | 265 |
* @since 1.5 |
266 |
*/ |
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267 |
@Override |
2 | 268 |
public synchronized int codePointCount(int beginIndex, int endIndex) { |
269 |
return super.codePointCount(beginIndex, endIndex); |
|
270 |
} |
|
271 |
||
272 |
/** |
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* @throws IndexOutOfBoundsException {@inheritDoc} |
2 | 274 |
* @since 1.5 |
275 |
*/ |
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@Override |
2 | 277 |
public synchronized int offsetByCodePoints(int index, int codePointOffset) { |
278 |
return super.offsetByCodePoints(index, codePointOffset); |
|
279 |
} |
|
280 |
||
281 |
/** |
|
282 |
* @throws IndexOutOfBoundsException {@inheritDoc} |
|
283 |
*/ |
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@Override |
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public synchronized void getChars(int srcBegin, int srcEnd, char[] dst, |
2 | 286 |
int dstBegin) |
287 |
{ |
|
288 |
super.getChars(srcBegin, srcEnd, dst, dstBegin); |
|
289 |
} |
|
290 |
||
291 |
/** |
|
292 |
* @throws IndexOutOfBoundsException {@inheritDoc} |
|
293 |
* @see #length() |
|
294 |
*/ |
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@Override |
2 | 296 |
public synchronized void setCharAt(int index, char ch) { |
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toStringCache = null; |
33663 | 298 |
super.setCharAt(index, ch); |
2 | 299 |
} |
300 |
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@Override |
2 | 302 |
public synchronized StringBuffer append(Object obj) { |
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303 |
toStringCache = null; |
2 | 304 |
super.append(String.valueOf(obj)); |
305 |
return this; |
|
306 |
} |
|
307 |
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@Override |
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@HotSpotIntrinsicCandidate |
2 | 310 |
public synchronized StringBuffer append(String str) { |
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311 |
toStringCache = null; |
2 | 312 |
super.append(str); |
313 |
return this; |
|
314 |
} |
|
315 |
||
316 |
/** |
|
14997 | 317 |
* Appends the specified {@code StringBuffer} to this sequence. |
2 | 318 |
* <p> |
14997 | 319 |
* The characters of the {@code StringBuffer} argument are appended, |
320 |
* in order, to the contents of this {@code StringBuffer}, increasing the |
|
321 |
* length of this {@code StringBuffer} by the length of the argument. |
|
322 |
* If {@code sb} is {@code null}, then the four characters |
|
323 |
* {@code "null"} are appended to this {@code StringBuffer}. |
|
2 | 324 |
* <p> |
325 |
* Let <i>n</i> be the length of the old character sequence, the one |
|
14997 | 326 |
* contained in the {@code StringBuffer} just prior to execution of the |
327 |
* {@code append} method. Then the character at index <i>k</i> in |
|
2 | 328 |
* the new character sequence is equal to the character at index <i>k</i> |
329 |
* in the old character sequence, if <i>k</i> is less than <i>n</i>; |
|
330 |
* otherwise, it is equal to the character at index <i>k-n</i> in the |
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* argument {@code sb}. |
2 | 332 |
* <p> |
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333 |
* This method synchronizes on {@code this}, the destination |
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334 |
* object, but does not synchronize on the source ({@code sb}). |
2 | 335 |
* |
14997 | 336 |
* @param sb the {@code StringBuffer} to append. |
2 | 337 |
* @return a reference to this object. |
338 |
* @since 1.4 |
|
339 |
*/ |
|
340 |
public synchronized StringBuffer append(StringBuffer sb) { |
|
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341 |
toStringCache = null; |
2 | 342 |
super.append(sb); |
343 |
return this; |
|
344 |
} |
|
345 |
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346 |
/** |
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347 |
* @since 1.8 |
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348 |
*/ |
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349 |
@Override |
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350 |
synchronized StringBuffer append(AbstractStringBuilder asb) { |
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351 |
toStringCache = null; |
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352 |
super.append(asb); |
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353 |
return this; |
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|
354 |
} |
2 | 355 |
|
356 |
/** |
|
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357 |
* Appends the specified {@code CharSequence} to this |
2 | 358 |
* sequence. |
359 |
* <p> |
|
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360 |
* The characters of the {@code CharSequence} argument are appended, |
2 | 361 |
* in order, increasing the length of this sequence by the length of the |
362 |
* argument. |
|
363 |
* |
|
364 |
* <p>The result of this method is exactly the same as if it were an |
|
365 |
* invocation of this.append(s, 0, s.length()); |
|
366 |
* |
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367 |
* <p>This method synchronizes on {@code this}, the destination |
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368 |
* object, but does not synchronize on the source ({@code s}). |
2 | 369 |
* |
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370 |
* <p>If {@code s} is {@code null}, then the four characters |
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371 |
* {@code "null"} are appended. |
2 | 372 |
* |
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373 |
* @param s the {@code CharSequence} to append. |
2 | 374 |
* @return a reference to this object. |
375 |
* @since 1.5 |
|
376 |
*/ |
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377 |
@Override |
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378 |
public synchronized StringBuffer append(CharSequence s) { |
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379 |
toStringCache = null; |
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380 |
super.append(s); |
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|
381 |
return this; |
2 | 382 |
} |
383 |
||
384 |
/** |
|
385 |
* @throws IndexOutOfBoundsException {@inheritDoc} |
|
386 |
* @since 1.5 |
|
387 |
*/ |
|
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388 |
@Override |
2 | 389 |
public synchronized StringBuffer append(CharSequence s, int start, int end) |
390 |
{ |
|
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391 |
toStringCache = null; |
2 | 392 |
super.append(s, start, end); |
393 |
return this; |
|
394 |
} |
|
395 |
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396 |
@Override |
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|
397 |
public synchronized StringBuffer append(char[] str) { |
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|
398 |
toStringCache = null; |
2 | 399 |
super.append(str); |
400 |
return this; |
|
401 |
} |
|
402 |
||
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|
403 |
/** |
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|
404 |
* @throws IndexOutOfBoundsException {@inheritDoc} |
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|
405 |
*/ |
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406 |
@Override |
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|
407 |
public synchronized StringBuffer append(char[] str, int offset, int len) { |
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|
408 |
toStringCache = null; |
2 | 409 |
super.append(str, offset, len); |
410 |
return this; |
|
411 |
} |
|
412 |
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413 |
@Override |
2 | 414 |
public synchronized StringBuffer append(boolean b) { |
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|
415 |
toStringCache = null; |
2 | 416 |
super.append(b); |
417 |
return this; |
|
418 |
} |
|
419 |
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420 |
@Override |
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421 |
@HotSpotIntrinsicCandidate |
2 | 422 |
public synchronized StringBuffer append(char c) { |
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|
423 |
toStringCache = null; |
2 | 424 |
super.append(c); |
425 |
return this; |
|
426 |
} |
|
427 |
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428 |
@Override |
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429 |
@HotSpotIntrinsicCandidate |
2 | 430 |
public synchronized StringBuffer append(int i) { |
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|
431 |
toStringCache = null; |
2 | 432 |
super.append(i); |
433 |
return this; |
|
434 |
} |
|
435 |
||
436 |
/** |
|
437 |
* @since 1.5 |
|
438 |
*/ |
|
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439 |
@Override |
2 | 440 |
public synchronized StringBuffer appendCodePoint(int codePoint) { |
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|
441 |
toStringCache = null; |
2 | 442 |
super.appendCodePoint(codePoint); |
443 |
return this; |
|
444 |
} |
|
445 |
||
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446 |
@Override |
2 | 447 |
public synchronized StringBuffer append(long lng) { |
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|
448 |
toStringCache = null; |
2 | 449 |
super.append(lng); |
450 |
return this; |
|
451 |
} |
|
452 |
||
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453 |
@Override |
2 | 454 |
public synchronized StringBuffer append(float f) { |
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|
455 |
toStringCache = null; |
2 | 456 |
super.append(f); |
457 |
return this; |
|
458 |
} |
|
459 |
||
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460 |
@Override |
2 | 461 |
public synchronized StringBuffer append(double d) { |
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|
462 |
toStringCache = null; |
2 | 463 |
super.append(d); |
464 |
return this; |
|
465 |
} |
|
466 |
||
467 |
/** |
|
468 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
469 |
* @since 1.2 |
|
470 |
*/ |
|
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471 |
@Override |
2 | 472 |
public synchronized StringBuffer delete(int start, int end) { |
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|
473 |
toStringCache = null; |
2 | 474 |
super.delete(start, end); |
475 |
return this; |
|
476 |
} |
|
477 |
||
478 |
/** |
|
479 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
480 |
* @since 1.2 |
|
481 |
*/ |
|
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jgish
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changeset
|
482 |
@Override |
2 | 483 |
public synchronized StringBuffer deleteCharAt(int index) { |
17472
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changeset
|
484 |
toStringCache = null; |
2 | 485 |
super.deleteCharAt(index); |
486 |
return this; |
|
487 |
} |
|
488 |
||
489 |
/** |
|
490 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
491 |
* @since 1.2 |
|
492 |
*/ |
|
14332
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changeset
|
493 |
@Override |
2 | 494 |
public synchronized StringBuffer replace(int start, int end, String str) { |
17472
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dholmes
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changeset
|
495 |
toStringCache = null; |
2 | 496 |
super.replace(start, end, str); |
497 |
return this; |
|
498 |
} |
|
499 |
||
500 |
/** |
|
501 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
502 |
* @since 1.2 |
|
503 |
*/ |
|
14332
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6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
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changeset
|
504 |
@Override |
2 | 505 |
public synchronized String substring(int start) { |
506 |
return substring(start, count); |
|
507 |
} |
|
508 |
||
509 |
/** |
|
510 |
* @throws IndexOutOfBoundsException {@inheritDoc} |
|
511 |
* @since 1.4 |
|
512 |
*/ |
|
14332
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6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
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changeset
|
513 |
@Override |
2 | 514 |
public synchronized CharSequence subSequence(int start, int end) { |
515 |
return super.substring(start, end); |
|
516 |
} |
|
517 |
||
518 |
/** |
|
519 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
520 |
* @since 1.2 |
|
521 |
*/ |
|
14332
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6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
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diff
changeset
|
522 |
@Override |
2 | 523 |
public synchronized String substring(int start, int end) { |
524 |
return super.substring(start, end); |
|
525 |
} |
|
526 |
||
527 |
/** |
|
528 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
529 |
* @since 1.2 |
|
530 |
*/ |
|
14332
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6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
531 |
@Override |
1223
5c1037124466
6728229: (str) StringBuilder.append(CharSequence) does not throw IndexOutOfBoundsException
martin
parents:
2
diff
changeset
|
532 |
public synchronized StringBuffer insert(int index, char[] str, int offset, |
2 | 533 |
int len) |
534 |
{ |
|
17472
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dholmes
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changeset
|
535 |
toStringCache = null; |
2 | 536 |
super.insert(index, str, offset, len); |
537 |
return this; |
|
538 |
} |
|
539 |
||
540 |
/** |
|
541 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
542 |
*/ |
|
14332
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6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
543 |
@Override |
2 | 544 |
public synchronized StringBuffer insert(int offset, Object obj) { |
17472
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dholmes
parents:
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changeset
|
545 |
toStringCache = null; |
2 | 546 |
super.insert(offset, String.valueOf(obj)); |
547 |
return this; |
|
548 |
} |
|
549 |
||
550 |
/** |
|
551 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
552 |
*/ |
|
14332
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6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
553 |
@Override |
2 | 554 |
public synchronized StringBuffer insert(int offset, String str) { |
17472
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dholmes
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changeset
|
555 |
toStringCache = null; |
2 | 556 |
super.insert(offset, str); |
557 |
return this; |
|
558 |
} |
|
559 |
||
560 |
/** |
|
561 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
562 |
*/ |
|
14332
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6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
563 |
@Override |
1223
5c1037124466
6728229: (str) StringBuilder.append(CharSequence) does not throw IndexOutOfBoundsException
martin
parents:
2
diff
changeset
|
564 |
public synchronized StringBuffer insert(int offset, char[] str) { |
17472
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dholmes
parents:
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changeset
|
565 |
toStringCache = null; |
2 | 566 |
super.insert(offset, str); |
567 |
return this; |
|
568 |
} |
|
569 |
||
570 |
/** |
|
571 |
* @throws IndexOutOfBoundsException {@inheritDoc} |
|
572 |
* @since 1.5 |
|
573 |
*/ |
|
14332
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jgish
parents:
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diff
changeset
|
574 |
@Override |
2 | 575 |
public StringBuffer insert(int dstOffset, CharSequence s) { |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
576 |
// Note, synchronization achieved via invocations of other StringBuffer methods |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
577 |
// after narrowing of s to specific type |
17472
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8013395: StringBuffer.toString performance regression impacting embedded benchmarks
dholmes
parents:
15312
diff
changeset
|
578 |
// Ditto for toStringCache clearing |
14332
451c5dd717dc
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jgish
parents:
13155
diff
changeset
|
579 |
super.insert(dstOffset, s); |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
580 |
return this; |
2 | 581 |
} |
582 |
||
583 |
/** |
|
584 |
* @throws IndexOutOfBoundsException {@inheritDoc} |
|
585 |
* @since 1.5 |
|
586 |
*/ |
|
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
587 |
@Override |
2 | 588 |
public synchronized StringBuffer insert(int dstOffset, CharSequence s, |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
589 |
int start, int end) |
2 | 590 |
{ |
17472
4ce9bd9f56ac
8013395: StringBuffer.toString performance regression impacting embedded benchmarks
dholmes
parents:
15312
diff
changeset
|
591 |
toStringCache = null; |
2 | 592 |
super.insert(dstOffset, s, start, end); |
593 |
return this; |
|
594 |
} |
|
595 |
||
596 |
/** |
|
597 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
598 |
*/ |
|
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
599 |
@Override |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
600 |
public StringBuffer insert(int offset, boolean b) { |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
601 |
// Note, synchronization achieved via invocation of StringBuffer insert(int, String) |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
602 |
// after conversion of b to String by super class method |
17472
4ce9bd9f56ac
8013395: StringBuffer.toString performance regression impacting embedded benchmarks
dholmes
parents:
15312
diff
changeset
|
603 |
// Ditto for toStringCache clearing |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
604 |
super.insert(offset, b); |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
605 |
return this; |
2 | 606 |
} |
607 |
||
608 |
/** |
|
609 |
* @throws IndexOutOfBoundsException {@inheritDoc} |
|
610 |
*/ |
|
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
611 |
@Override |
2 | 612 |
public synchronized StringBuffer insert(int offset, char c) { |
17472
4ce9bd9f56ac
8013395: StringBuffer.toString performance regression impacting embedded benchmarks
dholmes
parents:
15312
diff
changeset
|
613 |
toStringCache = null; |
2 | 614 |
super.insert(offset, c); |
615 |
return this; |
|
616 |
} |
|
617 |
||
618 |
/** |
|
619 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
620 |
*/ |
|
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
621 |
@Override |
2 | 622 |
public StringBuffer insert(int offset, int i) { |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
623 |
// Note, synchronization achieved via invocation of StringBuffer insert(int, String) |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
624 |
// after conversion of i to String by super class method |
17472
4ce9bd9f56ac
8013395: StringBuffer.toString performance regression impacting embedded benchmarks
dholmes
parents:
15312
diff
changeset
|
625 |
// Ditto for toStringCache clearing |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
626 |
super.insert(offset, i); |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
627 |
return this; |
2 | 628 |
} |
629 |
||
630 |
/** |
|
631 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
632 |
*/ |
|
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
633 |
@Override |
2 | 634 |
public StringBuffer insert(int offset, long l) { |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
635 |
// Note, synchronization achieved via invocation of StringBuffer insert(int, String) |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
636 |
// after conversion of l to String by super class method |
17472
4ce9bd9f56ac
8013395: StringBuffer.toString performance regression impacting embedded benchmarks
dholmes
parents:
15312
diff
changeset
|
637 |
// Ditto for toStringCache clearing |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
638 |
super.insert(offset, l); |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
639 |
return this; |
2 | 640 |
} |
641 |
||
642 |
/** |
|
643 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
644 |
*/ |
|
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
645 |
@Override |
2 | 646 |
public StringBuffer insert(int offset, float f) { |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
647 |
// Note, synchronization achieved via invocation of StringBuffer insert(int, String) |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
648 |
// after conversion of f to String by super class method |
17472
4ce9bd9f56ac
8013395: StringBuffer.toString performance regression impacting embedded benchmarks
dholmes
parents:
15312
diff
changeset
|
649 |
// Ditto for toStringCache clearing |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
650 |
super.insert(offset, f); |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
651 |
return this; |
2 | 652 |
} |
653 |
||
654 |
/** |
|
655 |
* @throws StringIndexOutOfBoundsException {@inheritDoc} |
|
656 |
*/ |
|
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
657 |
@Override |
2 | 658 |
public StringBuffer insert(int offset, double d) { |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
659 |
// Note, synchronization achieved via invocation of StringBuffer insert(int, String) |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
660 |
// after conversion of d to String by super class method |
17472
4ce9bd9f56ac
8013395: StringBuffer.toString performance regression impacting embedded benchmarks
dholmes
parents:
15312
diff
changeset
|
661 |
// Ditto for toStringCache clearing |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
662 |
super.insert(offset, d); |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
663 |
return this; |
2 | 664 |
} |
665 |
||
666 |
/** |
|
667 |
* @since 1.4 |
|
668 |
*/ |
|
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
669 |
@Override |
2 | 670 |
public int indexOf(String str) { |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
671 |
// Note, synchronization achieved via invocations of other StringBuffer methods |
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
672 |
return super.indexOf(str); |
2 | 673 |
} |
674 |
||
675 |
/** |
|
676 |
* @since 1.4 |
|
677 |
*/ |
|
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
678 |
@Override |
2 | 679 |
public synchronized int indexOf(String str, int fromIndex) { |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
680 |
return super.indexOf(str, fromIndex); |
2 | 681 |
} |
682 |
||
683 |
/** |
|
684 |
* @since 1.4 |
|
685 |
*/ |
|
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
686 |
@Override |
2 | 687 |
public int lastIndexOf(String str) { |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
688 |
// Note, synchronization achieved via invocations of other StringBuffer methods |
2 | 689 |
return lastIndexOf(str, count); |
690 |
} |
|
691 |
||
692 |
/** |
|
693 |
* @since 1.4 |
|
694 |
*/ |
|
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
695 |
@Override |
2 | 696 |
public synchronized int lastIndexOf(String str, int fromIndex) { |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
697 |
return super.lastIndexOf(str, fromIndex); |
2 | 698 |
} |
699 |
||
700 |
/** |
|
24865
09b1d992ca72
8044740: Convert all JDK versions used in @since tag to 1.n[.n] in jdk repo
henryjen
parents:
17709
diff
changeset
|
701 |
* @since 1.0.2 |
2 | 702 |
*/ |
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
703 |
@Override |
2 | 704 |
public synchronized StringBuffer reverse() { |
17472
4ce9bd9f56ac
8013395: StringBuffer.toString performance regression impacting embedded benchmarks
dholmes
parents:
15312
diff
changeset
|
705 |
toStringCache = null; |
2 | 706 |
super.reverse(); |
707 |
return this; |
|
708 |
} |
|
709 |
||
14332
451c5dd717dc
6206780: (str) Forwarding append methods in String{Buffer,Builder} are inconsistent
jgish
parents:
13155
diff
changeset
|
710 |
@Override |
31671
362e0c0acece
8076112: Add @HotSpotIntrinsicCandidate annotation to indicate methods for which Java Runtime has intrinsics
zmajo
parents:
29974
diff
changeset
|
711 |
@HotSpotIntrinsicCandidate |
2 | 712 |
public synchronized String toString() { |
17472
4ce9bd9f56ac
8013395: StringBuffer.toString performance regression impacting embedded benchmarks
dholmes
parents:
15312
diff
changeset
|
713 |
if (toStringCache == null) { |
33663 | 714 |
return toStringCache = |
715 |
isLatin1() ? StringLatin1.newString(value, 0, count) |
|
716 |
: StringUTF16.newString(value, 0, count); |
|
17472
4ce9bd9f56ac
8013395: StringBuffer.toString performance regression impacting embedded benchmarks
dholmes
parents:
15312
diff
changeset
|
717 |
} |
33663 | 718 |
return new String(toStringCache); |
2 | 719 |
} |
720 |
||
721 |
/** |
|
722 |
* Serializable fields for StringBuffer. |
|
723 |
* |
|
724 |
* @serialField value char[] |
|
725 |
* The backing character array of this StringBuffer. |
|
726 |
* @serialField count int |
|
727 |
* The number of characters in this StringBuffer. |
|
728 |
* @serialField shared boolean |
|
729 |
* A flag indicating whether the backing array is shared. |
|
730 |
* The value is ignored upon deserialization. |
|
731 |
*/ |
|
732 |
private static final java.io.ObjectStreamField[] serialPersistentFields = |
|
733 |
{ |
|
734 |
new java.io.ObjectStreamField("value", char[].class), |
|
735 |
new java.io.ObjectStreamField("count", Integer.TYPE), |
|
736 |
new java.io.ObjectStreamField("shared", Boolean.TYPE), |
|
737 |
}; |
|
738 |
||
739 |
/** |
|
740 |
* readObject is called to restore the state of the StringBuffer from |
|
741 |
* a stream. |
|
742 |
*/ |
|
743 |
private synchronized void writeObject(java.io.ObjectOutputStream s) |
|
744 |
throws java.io.IOException { |
|
745 |
java.io.ObjectOutputStream.PutField fields = s.putFields(); |
|
33663 | 746 |
char[] val = new char[capacity()]; |
747 |
if (isLatin1()) { |
|
748 |
StringLatin1.getChars(value, 0, count, val, 0); |
|
749 |
} else { |
|
750 |
StringUTF16.getChars(value, 0, count, val, 0); |
|
751 |
} |
|
752 |
fields.put("value", val); |
|
2 | 753 |
fields.put("count", count); |
754 |
fields.put("shared", false); |
|
755 |
s.writeFields(); |
|
756 |
} |
|
757 |
||
758 |
/** |
|
759 |
* readObject is called to restore the state of the StringBuffer from |
|
760 |
* a stream. |
|
761 |
*/ |
|
762 |
private void readObject(java.io.ObjectInputStream s) |
|
763 |
throws java.io.IOException, ClassNotFoundException { |
|
764 |
java.io.ObjectInputStream.GetField fields = s.readFields(); |
|
33663 | 765 |
char[] val = (char[])fields.get("value", null); |
766 |
initBytes(val, 0, val.length); |
|
2 | 767 |
count = fields.get("count", 0); |
768 |
} |
|
33663 | 769 |
|
34326
2bb3b3aea3c5
8143553: StringBuffer.getByte(byte[], int, byte) should be package private (not protected)
sherman
parents:
33663
diff
changeset
|
770 |
synchronized void getBytes(byte dst[], int dstBegin, byte coder) { |
33663 | 771 |
super.getBytes(dst, dstBegin, coder); |
772 |
} |
|
2 | 773 |
} |