test/jdk/java/io/Serializable/evolution/AddedField/WriteAddedField.java
author rriggs
Fri, 11 Oct 2019 13:11:56 -0400
changeset 58565 baa5969ecf34
parent 47216 71c04702a3d5
permissions -rw-r--r--
8231427: Warning cleanup in tests of java.io.Serializable Reviewed-by: darcy, lancea
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/*
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 * Copyright (c) 1997, 2019, 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.
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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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/* @test
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 * @bug 4088176
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 * @summary  Deserialize an evolved class with a new field, field type is new.
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 *
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 * @clean A B C NewExternField NewFieldClass ReadAddedField WriteAddedField
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 * @compile WriteAddedField.java
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 * @run main WriteAddedField
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 * @clean A B C NewExternField NewFieldClass ReadAddedField WriteAddedField
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 * @compile ReadAddedField.java
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 * @run main ReadAddedField
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 */
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import java.io.*;
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class NewFieldClass implements Serializable {
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    private static final long serialVersionUID = 1L;
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    int k;
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    NewFieldClass(int value) {
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        k = value;
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    }
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};
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class IncompatibleFieldClass implements Serializable {
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    private static final long serialVersionUID = 3L;
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    int x = 5;
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};
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@SuppressWarnings("serial") /* Incorrect use is being tested */
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class NewExternFieldClass implements Externalizable {
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    private static final long serialVersionUID = 1L;
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    byte l;
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    public NewExternFieldClass(int value) {
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        l = (byte)value;
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    }
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    public void readExternal(ObjectInput s)
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        throws IOException, ClassNotFoundException
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    {
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        l = s.readByte();
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    }
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    public void writeExternal(ObjectOutput s) throws IOException
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    {
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        s.writeByte(l);
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    }
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}
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class A implements Serializable  {
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    // Version 1.1 of class A.  Added superclass NewSerializableSuper.
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    private static final long serialVersionUID = 1L;
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    NewFieldClass foo;
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    NewFieldClass fooarray[];
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    IncompatibleFieldClass boo;
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    IncompatibleFieldClass booarray[];
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    /* Excluded due to Bug 4089540
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    NewExternFieldClass abc;
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    NewExternFieldClass farray[];
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    */
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    int bar;
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    A() {
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        foo = new NewFieldClass(23);
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        fooarray = new NewFieldClass[24];
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        for (int i = 0; i < fooarray.length; i++)
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            fooarray[i] = new NewFieldClass(i);
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        boo = new IncompatibleFieldClass();
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        booarray = new IncompatibleFieldClass[24];
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        for (int i = 0; i < booarray.length; i++)
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            booarray[i] = new IncompatibleFieldClass();
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        bar = 4;
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        /* Excluded due to Bug 4089540
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        abc = new NewExternFieldClass(66);
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        farray = new NewExternFieldClass[10];
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        for (int k = 0; k < farray.length; k++)
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            farray[k] = new NewExternFieldClass(k);
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        */
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    }
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}
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/** Test serial persistent fields w/o using Alternate API.
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  */
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class B implements Serializable {
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    private static final long serialVersionUID = 2L;
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    NewFieldClass       foo;
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    NewFieldClass[]     array;
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    IncompatibleFieldClass boo;
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    IncompatibleFieldClass booarray[];
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    transient NewExternFieldClass abc;
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    transient NewExternFieldClass farray[];
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    int                 bar;
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    B() {
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        foo = new NewFieldClass(12);
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        array = new NewFieldClass[12];
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        for (int i = 0; i < array.length; i++)
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            array[i] = new NewFieldClass(i);
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        bar = 4;
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        abc = new NewExternFieldClass(66);
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        farray = new NewExternFieldClass[10];
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        for (int k = 0; k < farray.length; k++)
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            farray[k] = new NewExternFieldClass(k);
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    }
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}
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/** Test serial persistent fields using Alternate API.
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  * Also make sure that optional data to non-existent classes can be skipped.
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  */
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class C implements Serializable {
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    private static final long serialVersionUID = 3L;
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    NewFieldClass       foo;
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    NewFieldClass[]     array;
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    int                 bar;
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    transient NewExternFieldClass abc;
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    transient NewExternFieldClass farray[];
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    C() {
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        foo = new NewFieldClass(12);
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        array = new NewFieldClass[12];
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        for (int i = 0; i < array.length; i++)
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            array[i] = new NewFieldClass(i);
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        bar = 4;
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        abc = new NewExternFieldClass(3);
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        farray = new NewExternFieldClass[10];
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        for (int k = 0; k < farray.length; k++)
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            farray[k] = new NewExternFieldClass(k);
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    }
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    private void readObject(ObjectInputStream s)
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        throws IOException, ClassNotFoundException
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    {
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        s.defaultReadObject();
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        /* Excluded due to Bug 4089540
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        abc  = (NewExternFieldClass)fields.get("abc", null);
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        farray = (NewExternFieldClass[])fields.get("farray", null);
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        */
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        /* read optional data */
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        NewFieldClass   tmpfoo  = (NewFieldClass)s.readObject();
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        NewFieldClass[] tmparray= (NewFieldClass[])s.readObject();
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        int tmpbar = s.readInt();
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        /* Excluded due to Bug 4089540
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        NewExternFieldClass tmpabc = (NewExternFieldClass)s.readObject();
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        NewExternFieldClass[] tmpfarray = (NewExternFieldClass[])s.readObject();
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        */
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    }
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    private void writeObject(ObjectOutputStream s)
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        throws IOException
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    {
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        s.defaultWriteObject();
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        /* write optional data */
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        s.writeObject(foo);
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        s.writeObject(array);
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        s.writeInt(bar);
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        /* Excluded due to Bug 4089540
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        s.writeObject(abc);
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        s.writeObject(farray);
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        */
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    }
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}
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public class WriteAddedField {
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    public static void main(String args[]) throws IOException {
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        A a = new A();
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        B b = new B();
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        C c = new C();
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        File f = new File("tmp.ser");
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        ObjectOutput out =
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            new ObjectOutputStream(new FileOutputStream(f));
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        out.writeObject(a);
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        out.writeObject(b);
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        out.writeObject(c);
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        a = new A();
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        b = new B();
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        c = new C();
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        out.writeObject(a);
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        out.writeObject(b);
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        out.writeObject(c);
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        out.close();
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   210
    }
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}