1 /*
2  * Copyright (c) 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
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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
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22  */
23 
24 /**
25  * @test
26  * @bug  4491255
27  * @summary Test for a new protected method PrintWriter.clearError()
28  *          to reset its internal error state
29  */
30 
31 import java.io.*;
32 
33 public class ClearErrorWriter extends PrintWriter {
34 
35 
ClearErrorWriter(Writer w, boolean autoFlush)36     public ClearErrorWriter(Writer w, boolean autoFlush) {
37         super(w, autoFlush);
38     }
39 
main(String[] args)40     public static void main(String[] args) throws Exception {
41 
42         File f = new File(System.getProperty("test.dir", "."),
43                           "print-writer.out");
44         f.deleteOnExit();
45         ClearErrorWriter out = new ClearErrorWriter(new BufferedWriter(
46                                 new FileWriter(f)),
47                                 true);
48         out.println("Hello World!");
49         out.close();
50         out.println("Writing after close");
51 
52         if (out.checkError()) {
53             System.out.println("An error occured");
54             out.clearError();
55 
56             if (!out.checkError()) {
57                 System.out.println("Error status cleared");
58             } else {
59                 throw new Exception("Error Status unchanged");
60             }
61          }
62          else {
63              System.out.println(" No error occured");
64          }
65     }
66 }
67