][] = new int[3][];
</PRE>
is a legal declaration. <P>
Subscripts are checked to make sure they're valid:<P>
<PRE>
   int a[] = new int[10];
   a[5] = 1;
   a[1] = a[0] + a[2];
   a[-1]	 = 4;         // Throws an ArrayIndexOutOfBoundsException
                        // at runtime
   a[10] = 2;           // Throws an ArrayIndexOutOfBoundsException
                        // at runtime
</PRE>
Array dimensions must be integer expressions:<P>
<PRE>
   int n;
   ...
   float arr[] = new float[n + 1];
</PRE>
The