1 /*

     2  * Copyright (c) 2002, 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 4773447

    26  * @summary Test Channels.newInputStream.read() method

    27  */

    28 

    29 import java.nio.ByteBuffer;

    30 import java.nio.channels.ReadableByteChannel;

    31 import java.nio.channels.Channels;

    32 import java.io.InputStream;

    33 import java.io.IOException;

    34 

    35 public class ReadByte {

    36     public static void main(String[] args) throws IOException {

    37         ReadableByteChannel channel = new ReadableByteChannel() {

    38             public int read(ByteBuffer dst) {

    39                 dst.put((byte) 129);

    40                 return 1;

    41             }

    42 

    43             public boolean isOpen() {

    44                 return true;

    45             }

    46 

    47             public void close() {

    48             }

    49         };

    50 

    51         InputStream in = Channels.newInputStream(channel);

    52         int data = in.read();

    53         if (data < 0)

    54             throw new RuntimeException(

    55                 "InputStream.read() spec'd to return 0-255");

    56     }

    57 }