Description JD Anderson 2005-12-06 22:02:34 EST

The normal error checking shows no errors until the project is cleaned or rebuilt. Adding a harmless comment and then saving appears to clear the error until another build is attempted.

The code compiles and runs from the command line.

I have isolated the bug down to two interfaces and one class.

Parent.java

package bug;

public interface Parent
{

  public Integer bar();
  
}


Child.java

package bug;

public interface Child extends Parent
{
  
  public static final Child DEFAULT = new Child()
  {
    
    public final Integer bar() { return y; }
        
    int x = 0;
    
    private final Integer y = new Integer(0);
        
  };
  
// I have reduced my code down to the most simple example that will still
// reproduce the bug. In isolating the code I discovered a few oddities
// that may useful to the debugger.
//
// Oddity Number One:
// Originally x was used in the construction of y and both objects were
// fairly complex. I discovered that using Integer or a String for y
// and ignoring x completely would replicate the problem so I was able to
// spare you most of my boring code. But, when I tried to remove x the
// example would no longer reproduce the problem.
  
/*
  public static final Child DEFAULT1 = new Child()
  {
    
    public final Integer bar() { return y; }
            
    private final Integer y = new Integer(0);
        
  };  
*/
  
// Oddity Number Two:
// I wanted to put the example of oddity number one in the code,
// uncommented, to demonstrate that it would not reproduce the problem
// but the fragment above would. That would have been to easy. Putting
// the later fragment in hid the original problem once again. Curious as
// I was, I had to see if anything else would have the same effect. Yup.
  
/*
  public static final int z = 0;
*/

}


Test.java

package bug;

public class Test
{

  public Test()
  {
    a = Child.DEFAULT;
  }
  
  public final Child a;
}


Both of the oddities described in the comments of the Child interface can serve as work arounds so I guess this might not be a show stopper but it cost me a day.


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