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From "Vladimir Ivanov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-70) java.io.FileInputStream.close() must close channel associated with this FileInputStream
Date Thu, 02 Feb 2006 11:20:34 GMT
java.io.FileInputStream.close() must close channel associated with this FileInputStream
---------------------------------------------------------------------------------------

         Key: HARMONY-70
         URL: http://issues.apache.org/jira/browse/HARMONY-70
     Project: Harmony
        Type: Bug
  Components: Classlib  
    Reporter: Vladimir Ivanov


J2SE 1.4 specification reads for the method java.io.FileInputStream.close() :
"If this stream has an associated channel then the channel is closed as well."
But the channel is still opened.

Code to reproduce:
import java.io.*; 
import java.nio.channels.*;

public class test29 { 

    public static void main(String[] args)  {
        try { 
            File f = File.createTempFile("temp", ".txt"); 
            f.deleteOnExit(); 

            FileInputStream fis = new FileInputStream(f); 
            FileChannel fch = fis.getChannel(); 
            fis.close();
            System.out.println("fch.isOpen = " + fch.isOpen()); 
        } catch (Exception e) { 
            System.out.println("unex = " + e); 
        } 
    } 
}  

Steps to Reproduce: 
1. Build Harmony (check-out on 2006-01-30) j2se subset as described in README.txt. 
2. Compile test29.java using BEA 1.4 javac 
> javac -d . test29.java 
3. Run java using compatible VM (J9) 
> java -showversion test29


Output:
C:\tmp\tmp17>C:\jrockit-j2sdk1.4.2_04\bin\java.exe -showversion test29
java version "1.4.2_04"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_04-b05)
BEA WebLogic JRockit(TM) 1.4.2_04 JVM  (build ari-31788-20040616-1132-win-ia32, Native Threads,
GC strategy: parallel)

fch.isOpen = false

C:\tmp\tmp17>C:\harmony\trunk\deploy\jre\bin\java -showversion test29
java version 1.4.2 (subset)

(c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as applicable.
fch.isOpen = true

junit test:
------------------------ FileInputStreamTest.java -------------------------------------------------
import java.io.*; 
import java.nio.channels.*;

import junit.framework.*; 

public class FileInputStreamTest extends TestCase { 
    public static void main(String[] args) { 
        junit.textui.TestRunner.run(FileInputStreamTest.class); 
    } 

    public void testClose() { 
        try { 
            File f = File.createTempFile("temp", ".txt"); 
            f.deleteOnExit(); 

            FileInputStream fis = new FileInputStream(f); 
            FileChannel fch = fis.getChannel(); 
            fis.close();
            assertFalse("FAILED, channel still opened!", fch.isOpen()); 
        } catch (Exception e) { 
            fail("Unexpected exception: " + e); 
        } 
    }
} 


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