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- public class BadExtension { }
-
- abstract class Super {
- public final void finalPublic() {}
-
- public void justPublic() {}
- public int intPublic() {}
-
- public abstract void abstractWithBody() {} //ERROR shouldn't have a body
-
- public abstract void abstractPublic();
-
- public static final void staticFinalPublic() {}
- }
-
- class Sub extends Super { //ERROR must implement abstractPublic
- public void finalPublic() {} //ERROR can't override final
- void justPublic() {} //ERROR can't override with weaker access
- public void intPublic() {} //ERROR can't change the return type
-
- public static void staticFinalPublic() {} //ERROR can't even override static finals
- }
-
-
-
- interface I1 {
- void m();
- }
-
- interface I2 {
- int m();
- }
-
- class C12 implements I1, I2 {
- public void m() {} //ERROR incompatible return types with I2.m()
- }
-
- interface I12 extends I1, I2 {} //ERROR I1.m() and I2.m() are not compatible
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