This Test will cover Packages, Interfaces and Abstract classes. Including all the related topics to these.
package pck1; public class A { int x = 10; public int y = 20; } package pck2; import pck1.*; class Test { public static void main(String []args) { A a = new A(); // line 7 System.out.println(a.x); // line 8 System.out.println(a.y); // line 9 } }
import
keyword is used to?abstract class A { int a = 100; public abstract void showA(); } public class B extends A { _ _ _ _ _ _ _ _ _ // Fill the blank public static void main(String []args) { A objA = new B(); objA.showA(); } }
public interface A { public void showA(); }
// Class declarations : interface A {} class B {} class C extends B implements A {} class D implements A {} // Declaration statements : B b = new B(); C c = new C(); D d = new D();