1 /* 2 * Copyright (c) 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * 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 }