RandomAccessFile doesn't close when it gets garbage collected

Name: rmT116609 Date: 09/09/2003


FULL PRODUCT VERSION :
java version "1.4.2_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_01-b06)
Java HotSpot(TM) Client VM (build 1.4.2_01-b06, mixed mode)

FULL OS VERSION :
Microsoft Windows 2000 [Version 5.00.2195], Windows ME.

A DESCRIPTION OF THE PROBLEM :
RandomAccessFile doesn't close when it gets garbage collected.
Both FileInputStream and FileOutputStream will close when they get garbage collected, however RandomAccessFile does not.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
run code and wait

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Code to run fine without any error message.
ACTUAL -
After the line RAF count == 2036 is displayed the error occurs.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.io.IOException: Cannot create a file when that file already exists

at java.io.RandomAccessFile.open(Native Method)

at java.io.RandomAccessFile.<init>(RandomAccessFile.java:204)

at java.io.RandomAccessFile.<init>(RandomAccessFile.java:94)

at Test.main(Test.java:22)


java.io.FileNotFoundException: c:\temp.txt (Too many open files)
at java.io.RandomAccessFile.open(Native Method)
at java.io.RandomAccessFile.<init>(Unknown Source)
at java.io.RandomAccessFile.<init>(Unknown Source)



REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.io.*;

public class Test {
  public static void main(final String[] args) {
    try {
      for (int i = 0; i < 3000; i++) {
        System.out.println("FOS count == " + i);
        new FileOutputStream("c:/temp.txt");
        System.gc();
        System.runFinalization();
      }
      for (int i = 0; i < 3000; i++) {
        System.out.println("FIS count == " + i);
        new FileInputStream("c:/temp.txt");
        System.gc();
        System.runFinalization();
      }
      for (int i = 0; i < 3000; i++) {
        System.out.println("RAF count == " + i);
        new RandomAccessFile("c:/temp.txt", "rw");
        System.gc();
        System.runFinalization();
      }
    }
    catch (IOException ex) {
      ex.printStackTrace();
    }
    System.out.println("Done");
  }
}
---------- END SOURCE ----------
(Incident Review ID: 200878)
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