Description Markus Keller 2004-07-29 13:11:30 EDT

I200407271028:

These methods compile without warning, but fail with a CCE at run-time. When I
inline doBug1(), I get a compile error for al.add(n) (correct).

I think I shouldn't be allowed to put anything which is not at least an Integer
into an ArrayList<? super Integer>.

static void bug1() {
	ArrayList<Integer> al= new ArrayList<Integer>();
	doBug1(al);
	Integer i= al.get(0); //java.lang.ClassCastException: java.lang.Double
	System.out.println(i);
}

static void doBug1(ArrayList<? super Integer> al) {
	Object n= new Double(12.4);
	al.add(n);
//	al.add(new Double(12.3)); // compile error (OK)
	System.out.println(al.toString());
}