1 /*
   2  * Copyright (c) 1997, 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 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         try {
  39             for (;;) {
  40                 n = raf.read(buf, 0, buf.length);
  41                 if (n <= 0) break;
  42             }
  43             if (n != -1)
  44                 throw new RuntimeException("Expected -1 for EOF, got " + n);
  45         } finally {
  46             raf.close();
  47         }
  48     }
  49 
  50 }