1 /*

     2  * Copyright 2004 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /* @test

    25  * @bug 5041041

    26  * @summary Test BufferedInputStream read of zero byte array

    27  */

    28 

    29 import java.io.*;

    30 

    31 /**

    32  * This class tests to see if BufferedInputStream of zero length array

    33  * invokes the read method or not. Invoking read could block which is

    34  * incompatible behavior for zero length array.

    35  */

    36 public class ReadZeroBytes {

    37 

    38     public static void main( String argv[] ) throws Exception {

    39         BufferedInputStream in = new BufferedInputStream(

    40             new ThrowingInputStream());

    41         in.read(new byte[0], 0, 0);

    42     }

    43 }

    44 

    45 class ThrowingInputStream extends InputStream {

    46 

    47     public ThrowingInputStream() {

    48     }

    49     public int read() throws IOException {

    50         return 0;

    51     }

    52     public int read(byte[] b, int off, int len) throws IOException {

    53         throw new RuntimeException("Read invoked for len == 0");

    54     }

    55 }