public static void main(String[] args) { System.out.println("--------------InterfaceABImpl---------------"); InterfaceABImpl abimpl1 = new InterfaceABImpl(); abimpl1.method1(); abimpl1.method2(); abimpl1.method3(); abimpl1.method4(); InterfaceA ia1 = abimpl1; InterfaceB ib1 = abimpl1; System.out.println("--------------InterfaceA---------------"); ia1.method1(); ia1.method1(); System.out.println("--------------InterfaceB---------------"); ib1.method3(); ib1.method4(); System.out.println("------------final field-----------------"); System.out.println(InterfaceA.MEMBER1); System.out.println(InterfaceA.MEMBER2); System.out.println(InterfaceB.MEMBER3); System.out.println(InterfaceB.MEMBER4); System.out.println(InterfaceABImpl.MEMBER1); System.out.println(InterfaceABImpl.MEMBER2); System.out.println(InterfaceABImpl.MEMBER3); System.out.println(InterfaceABImpl.MEMBER4); System.out.println("------------------InterfaceA,InterfaceB--------------------"); InterfaceA ia2 = new InterfaceABImpl(); ia2.method1(); ia2.method2(); InterfaceB ib2 = (InterfaceB) ia2; ib2.method3(); ib2.method4(); System.out.println("-------------------Interface[Array]-------------------------"); InterfaceA[] iaArray = { new InterfaceABImpl(), new InterfaceABImpl(), new InterfaceABImpl(), new InterfaceABImpl(), new InterfaceABImpl(), new InterfaceABImpl(), new InterfaceABImpl(), new InterfaceABImpl(), new InterfaceABImpl() }; for (int i = 0; i < iaArray.length; i++) { System.out.println("╟╢ц╪аж╪р : " + iaArray[i]); iaArray[i].method1(); iaArray[i].method2(); InterfaceB tempIb = (InterfaceB) iaArray[i]; tempIb.method3(); tempIb.method4(); } }