1 /*

     2  * Copyright 1997 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 4017497

    26    @summary Check that read returns -1 on EOF, as specified

    27  */

    28 

    29 import java.io.*;

    30 

    31 public class EOF {

    32 

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

    34         byte buf[] = new byte[100];

    35         int n;

    36         String dir = System.getProperty("test.src", ".");

    37         RandomAccessFile raf = new RandomAccessFile(new File(dir, "EOF.java"), "r");

    38         for (;;) {

    39             n = raf.read(buf, 0, buf.length);

    40             if (n <= 0) break;

    41         }

    42         if (n != -1)

    43             throw new RuntimeException("Expected -1 for EOF, got " + n);

    44     }

    45 

    46 }