Name: dsR10051 Date: 03/21/2001



Method public Component add(Component comp, int index)
of class java.awt.Container can throw undocumented
ArrayIndexOutOfBoundsException when component is added twice.

Here is minimized test:
import java.awt.*;

public class Test2 {
    public static void main(String argv[]) {

        Panel p=new Panel();
        int[] values = {0,1};
        Canvas comp = new Canvas();
        for(int i=0;i<values.length;i++) {
            System.out.println(values[i]);
            p.add(comp,values[i]);
        }
    }
}
--- Output ---
%java -version
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b55)
Java HotSpot(TM) Client VM (build 1.4beta-B55, mixed mode)
%java Test2
0
1
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
        at java.lang.System.arraycopy(Native Method)
        at java.awt.Container.addImpl(Container.java:461)
        at java.awt.Container.add(Container.java:344)
        at Test2.main(Test2.java:11)

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