1 /*

     2  * Copyright 2010 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /* @test

    25  * @bug 4786884

    26  * @summary Ensure that passing the empty string to Charset methods and

    27  *          constructors causes an IllegalArgumentException to be thrown

    28  *

    29  * @build EmptyCharsetName

    30  * @run main EmptyCharsetName

    31  * @run main/othervm -Dsun.nio.cs.bugLevel=1.4 EmptyCharsetName

    32  */

    33 

    34 import java.io.*;

    35 import java.nio.*;

    36 import java.nio.charset.*;

    37 

    38 

    39 public class EmptyCharsetName {

    40 

    41     static boolean compat;

    42 

    43     static abstract class Test {

    44 

    45         public abstract void go() throws Exception;

    46 

    47         Test() throws Exception {

    48             try {

    49                 go();

    50             } catch (Exception x) {

    51                 if (compat) {

    52                     if (x instanceof UnsupportedCharsetException) {

    53                         System.err.println("Thrown as expected: " + x);

    54                         return;

    55                     }

    56                     throw new Exception("Exception thrown", x);

    57                 }

    58                 if (x instanceof IllegalCharsetNameException) {

    59                     System.err.println("Thrown as expected: " + x);

    60                     return;

    61                 }

    62                 throw new Exception("Incorrect exception: "

    63                                     + x.getClass().getName(),

    64                                     x);

    65             }

    66             if (!compat)

    67                 throw new Exception("No exception thrown");

    68         }

    69 

    70     }

    71 

    72     public static void main(String[] args) throws Exception {

    73 

    74         // If sun.nio.cs.bugLevel == 1.4 then we want the 1.4 behavior

    75         String bl = System.getProperty("sun.nio.cs.bugLevel");

    76         compat = (bl != null && bl.equals("1.4"));

    77 

    78         new Test() {

    79                 public void go() throws Exception {

    80                     Charset.forName("");

    81                 }};

    82         new Test() {

    83                 public void go() throws Exception {

    84                     Charset.isSupported("");

    85                 }};

    86         new Test() {

    87                 public void go() throws Exception {

    88                     new Charset("", new String[] { }) {

    89                             public CharsetDecoder newDecoder() {

    90                                 return null;

    91                             }

    92                             public CharsetEncoder newEncoder() {

    93                                 return null;

    94                             }

    95                             public boolean contains(Charset cs) {

    96                                 return false;

    97                             }

    98                         };

    99                 }};

   100     }

   101 

   102 }