| class C {} |
| class D extends C implements I {} |
| interface I {} |
| interface J extends I {} |
| |
| public class Class_1 |
| { |
| static void printIsAssignableFrom(Class a, Class b, boolean c) |
| { |
| // The field 'c' can be viewed to see the expected value. |
| System.out.println(a.isAssignableFrom(b)); |
| } |
| |
| public static void main (String arg[]) |
| { |
| System.out.println("Testing class `Class_1'..."); |
| printIsAssignableFrom(C.class, Object.class, false); |
| printIsAssignableFrom(C.class, C.class, true); |
| printIsAssignableFrom(C.class, D.class, true); |
| printIsAssignableFrom(D.class, C.class, false); |
| |
| printIsAssignableFrom(Object.class, int[].class, true); |
| printIsAssignableFrom(int[].class, int[].class, true); |
| printIsAssignableFrom(C[].class, D.class, false); |
| printIsAssignableFrom(C[].class, D[].class, true); |
| printIsAssignableFrom(C[].class, C[][].class, false); |
| |
| printIsAssignableFrom(Object.class, I.class, true); |
| printIsAssignableFrom(I.class, I.class, true); |
| printIsAssignableFrom(D.class, I.class, false); |
| printIsAssignableFrom(I.class, D.class, true); |
| |
| printIsAssignableFrom(D.class, J.class, false); |
| printIsAssignableFrom(J.class, D.class, false); |
| |
| printIsAssignableFrom(I.class, J.class, true); |
| printIsAssignableFrom(J.class, J.class, true); |
| printIsAssignableFrom(J.class, I.class, false); |
| |
| // Returns true iff both Class objects are equal. |
| printIsAssignableFrom(long.class, long.class, true); |
| |
| // Does not work for primitive types in general. |
| printIsAssignableFrom(long.class, int.class, false); |
| } |
| } |