1 class C {} 2 class D extends C implements I {} 3 interface I {} 4 interface J extends I {} 5 6 public class Class_1 7 { printIsAssignableFrom(Class a, Class b, boolean c)8 static void printIsAssignableFrom(Class a, Class b, boolean c) 9 { 10 // The field 'c' can be viewed to see the expected value. 11 System.out.println(a.isAssignableFrom(b)); 12 } 13 main(String arg[])14 public static void main (String arg[]) 15 { 16 System.out.println("Testing class `Class_1'..."); 17 printIsAssignableFrom(C.class, Object.class, false); 18 printIsAssignableFrom(C.class, C.class, true); 19 printIsAssignableFrom(C.class, D.class, true); 20 printIsAssignableFrom(D.class, C.class, false); 21 22 printIsAssignableFrom(Object.class, int[].class, true); 23 printIsAssignableFrom(int[].class, int[].class, true); 24 printIsAssignableFrom(C[].class, D.class, false); 25 printIsAssignableFrom(C[].class, D[].class, true); 26 printIsAssignableFrom(C[].class, C[][].class, false); 27 28 printIsAssignableFrom(Object.class, I.class, true); 29 printIsAssignableFrom(I.class, I.class, true); 30 printIsAssignableFrom(D.class, I.class, false); 31 printIsAssignableFrom(I.class, D.class, true); 32 33 printIsAssignableFrom(D.class, J.class, false); 34 printIsAssignableFrom(J.class, D.class, false); 35 36 printIsAssignableFrom(I.class, J.class, true); 37 printIsAssignableFrom(J.class, J.class, true); 38 printIsAssignableFrom(J.class, I.class, false); 39 40 // Returns true iff both Class objects are equal. 41 printIsAssignableFrom(long.class, long.class, true); 42 43 // Does not work for primitive types in general. 44 printIsAssignableFrom(long.class, int.class, false); 45 } 46 } 47