1/* 2 * Copyright (c) 1998, 2005, 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/** 25 * @test 26 * @bug 4143651 5085148 27 * 28 * @summary Test if Writer methods will check if the stream 29 * has been closed. 30 */ 31 32import java.io.*; 33 34public class WriteAfterClose { 35 36 static boolean failed = false; 37 38 static void testWrite(Writer wtr) throws Exception { 39 40 // These tests could be tighted to only check for a particular 41 // kind of exception, but in 1.2beta4 StringWriter and 42 // other writers throw RuntimeExceptions 43 char[] cbuf = new char[2]; 44 wtr.close(); 45 System.out.println("Class " + wtr.getClass().getName()); 46 47 try { 48 wtr.write('a'); 49 System.out.println("FAILED: Allows char write on a closed stream"); 50 failed = true; 51 } catch (Exception e) { 52 } 53 54 try { 55 wtr.write(cbuf, 0, 1); 56 System.out.println("FAILED: Allows buffer write on a closed stream"); 57 failed = true; 58 } catch (Exception e) { 59 } 60 61 try { 62 wtr.write(cbuf, 0, 0); 63 System.out.println("FAILED: Allows empty write on a closed stream"); 64 failed = true; 65 } catch (Exception e) { 66 } 67 68 try { 69 wtr.write("a"); 70 System.out.println("FAILED: Allows string write on a closed stream"); 71 failed = true; 72 } catch (Exception e) { 73 } 74 75 try { 76 wtr.write("a", 0, 1); 77 System.out.println("FALIED: Allows string buf write on a closed stream"); 78 failed = true; 79 } catch (Exception e) { 80 } 81 82 try { 83 wtr.flush(); 84 System.out.println("FAILED: Allows flushing writer on a closed stream"); 85 failed = true; 86 } catch (Exception e) { 87 } 88 89 wtr.close(); 90 } 91 92 public static void main(String argv[]) throws Exception { 93 StringWriter sw = new StringWriter(); 94 testWrite(new BufferedWriter(sw)); 95 96 ByteArrayOutputStream bos = new ByteArrayOutputStream(); 97 OutputStreamWriter osw = new OutputStreamWriter(bos); 98 testWrite(osw); 99 100 File f = new File(System.getProperty("test.dir", "."), 101 "NewFile"); 102 f.createNewFile(); 103 f.deleteOnExit(); 104 FileWriter fr = new FileWriter(f); 105 testWrite(fr); 106 107 if (failed) { 108 throw new Exception("The test failed because one of the" 109 + " writer operation{s} failed. Check the messages"); 110 } 111 } 112} 113