1 /* 2 * Copyright (c) 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 import java.io.IOException; 25 import java.io.OutputStream; 26 27 /* 28 * @test 29 * @bug 4358774 30 * @summary Check for expected behavior of OutputStream.nullStream(). 31 */ 32 public class NullOutputStream { 33 public static void main(String[] args) throws IOException { 34 int failures = 0; 35 36 OutputStream out = OutputStream.nullStream(); 37 if (out == null) { 38 throw new RuntimeException 39 ("OutputStream.nullStream() returned null"); 40 } 41 42 try { 43 out.write(62832); 44 } catch (Exception e) { 45 System.err.println("Unexpected Exception from write()"); 46 failures++; 47 } 48 try { 49 out.write(new byte[] {(byte)6}, 0, 1); 50 } catch (Exception e) { 51 System.err.println("Unexpected Exception from write(b,i,i)"); 52 failures++; 53 } 54 55 out.close(); 56 try { 57 out.write(62832); 58 System.err.println("No IOException from write() after closing"); 59 failures++; 60 } catch (IOException e) { 61 } 62 try { 63 out.write(new byte[] {(byte)6}, 0, 1); 64 System.err.println("No IOException from write(b,i,i) after closing"); 65 failures++; 66 } catch (IOException e) { 67 } 68 69 if (failures != 0) { 70 throw new RuntimeException("Test failed"); 71 } 72 } 73 }