Tag: programming languages

True

False

True

False

True

False

True

False

True

False

"X extends Y" is correct if and only if X is a class and Y is an interface

"X extends Y" is correct if and only if X is an interface and Y is a class

"X extends Y" is correct if X and Y are either both classes or both interfaces

"X extends Y" is correct for all combinations of X and Y being classes and/or interfaces

It can extend exactly one class and implement exactly one interface.

It can extend exactly one class and can implement multiple interfaces.

It can extend exactly one class or implement exactly one interface.

It can implement multiple interfaces regardless of whether it also extends a class.

Boo f = new Boo(24) { };

Boo f = new Bar() { };

Bar f = new Boo(String s) { };

Boo f = new Boo.Bar(String s) { };

It must be marked final.

It can be marked abstract.

It can be marked public.

It can be marked static.

Runnable r = new Runnable() { };

Runnable r = new Runnable(public void run() { });

Runnable r = new Runnable { public void run(){}};

System.out.println(new Runnable() {public void run() { }});