libjava/classpath/testsuite/java.io/RandomAccessFileTest.java

   1
   2 import java.io.*;
   3
   4 public class RandomAccessFileTest {
   5   public static void main (String args[]) {
   6     try {
   7       File f = new File("/etc/passwd");
   8       RandomAccessFile rf = new RandomAccessFile(f,"r");
   9
  10       long length = rf.length();
  11
  12       rf.seek(length - 10);
  13       long pos = rf.getFilePointer();
  14
  15       if ( (length - 10) != pos )
  16         throw new Exception("Bad value from getFilePointer(), " +
  17                             pos + " !=" + (length - 10));
  18
  19       int i = rf.read();
  20       byte b = rf.readByte();
  21       boolean test = rf.readBoolean();
  22
  23       byte buf[] = new byte[40];
  24       rf.seek(0);
  25       rf.read(buf);
  26
  27       rf.close();
  28       try {
  29         length = rf.length();
  30         throw new Exception("Got length from closed RandomAccessFile().");
  31       } catch (IOException e) {}
  32
  33       String filename2 = "/var/tmp/testfile-remove";
  34
  35       File f2 = new File(filename2);
  36       RandomAccessFile rf2 = new RandomAccessFile(filename2, "rw");
  37
  38       rf2.write(100);
  39       rf2.write(buf);
  40
  41       rf2.close();
  42       f2.delete();
  43
  44       System.out.println("PASSED: RandomAccessFile worked.");
  45       System.exit(0);
  46     } catch (Exception e) {
  47       System.out.println("FAILED: "+e);
  48     }
  49   }
  50 }