1 /* 2 * Copyright (c) 2010, 2017, 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 30 import java.io.*; 31 import java.nio.*; 32 import java.nio.charset.*; 33 34 35 public class EmptyCharsetName { 36 37 static abstract class Test { 38 39 public abstract void go() throws Exception; 40 41 Test() throws Exception { 42 try { 43 go(); 44 } catch (Exception x) { 45 if (x instanceof IllegalCharsetNameException) { 46 System.err.println("Thrown as expected: " + x); 47 return; 48 } 49 throw new Exception("Incorrect exception: " 50 + x.getClass().getName(), 51 x); 52 } 53 throw new Exception("No exception thrown"); 54 } 55 56 } 57 58 public static void main(String[] args) throws Exception { 59 60 new Test() { 61 public void go() throws Exception { 62 Charset.forName(""); 63 }}; 64 new Test() { 65 public void go() throws Exception { 66 Charset.isSupported(""); 67 }}; 68 new Test() { 69 public void go() throws Exception { 70 new Charset("", new String[] { }) { 71 public CharsetDecoder newDecoder() { 72 return null; 73 } 74 public CharsetEncoder newEncoder() { 75 return null; 76 } 77 public boolean contains(Charset cs) { 78 return false; 79 } 80 }; 81 }}; 82 } 83 84 }