题目内容

请阅读程序，写出程序运行结果class A{static String name="tom";static int getX() {return 2;}int getY() {return 3;}}class B extends A{static String name="Tuny";static int getX() {return 4;}int getY() {return 5;}}class C extends A{static String name="Tuny";static int getX() {return 4;}int getY() {return 5;}}interface D{int getY();}class E implements D{public int getY() {return 6;}}public class Demo{public static void main(String[] args) {A a=new A();A b=new B();A c=new C();D d=new E();int sum=a.name.length()+b.getX()+c.getY()+d.getY();System.out.println(sum);}}

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interface Com {int n=3;int compute(int a);}class A implements Com {int n=5;public int compute (int a){return a+n;}}class B implements Com{public int compute (int a) {return a-n;}}public class E {public static void main(String args[]) {Com com = new A();System.out.println(com. compute (10));com= new B();System.out.println(com. compute (10));}}运行结果：

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