接口的扩充

接口的扩展

package ch09;  //P142//interface Ainterface A{void meth1();void meth2();}//interface Binterface B extends A{void meth3();}//class MyClassclass MyClass implements B{public void meth1() {System.out.println("meth1");}public void meth2() {System.out.println("meth2");}public void meth3() {System.out.println("meth3");}}//mainpublic class InterfaceExtends {public static void main(String[] args) {MyClass ob=new MyClass();ob.meth1();ob.meth2();ob.meth3();}}

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