The use of java.lang.Override

If you are using Java 5, always use @Override when overriding:

0753:    @Override
0754:    public int hashcode()
0755:    {
0756:       return 0;
0757:    }
0758:    @Override
0759:    public String toString(String pString)
0760:    {
0761:       return iX + ":" + iY;
0762:    }

A Java 5 compiler will produce two compilation errors saying:
```
method does not override a method from its superclass
```
In my opinion, it would be better to force you to document overriding.
This is what is done in C# (and in Eiffel).