Name: rmT116609 Date: 03/30/2004


FULL PRODUCT VERSION :
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b32c)
Java HotSpot(TM) Client VM (build 1.5.0-beta-b32c, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows 2000 [Version 5.00.2195]

A DESCRIPTION OF THE PROBLEM :
When I call the method getSuperClass on the StringBuilder i get a class AbstractStringBuilder instead of object. I also noticed that the AbstractStringBuilder contains methods with a corresponding signature, (see code below). Is the signature of the method changed or does the keyword volatile hide the method.

package java.lang;

import java.io.IOException;
import sun.misc.FloatingDecimal;

abstract class AbstractStringBuilder
    implements Appendable, CharSequence
{

....


    public AbstractStringBuilder append(CharSequence charsequence)
    {
    }

....

    public AbstractStringBuilder append(char c)
    {
    }

....

    public volatile Appendable append(char c)
        throws IOException
    {
    }

    public volatile Appendable append(CharSequence charsequence)
        throws IOException
    {
    }
}


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
StringBuilder.class.getSuperclass()

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I would expect the super class of the StringBuilder would be Object as indicated in the documentation
ACTUAL -
Super class StringBuilder: class java.lang.AbstractStringBuilder

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
/*
 * TestStringBuilder.java
 *
 * Created on March 30, 2004, 2:34 PM
 */

import java.lang.StringBuilder;

/**
 *
 * @author schenk_m
 */
public class TestStringBuilder {
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        System.out.println("Super class StringBuilder: " +
                StringBuilder.class.getSuperclass());
    }
    
}
---------- END SOURCE ----------
(Incident Review ID: 245603)
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