摘要：
public class TestInterfaceDemo {public static void main(String[]args) {C c = new C();c.say1();c.say3();System.out.println(c.say4());c.say2();//我用say2输出的i，结果也为1；}}interface A {int i = 1;public void say1();}interface B {int j=2;public void say2();}interface E extends A,B {int k=3;public void say3();pu 阅读全文
摘要：
public class Test15 {public static void main(String[]args) {Student1 s = new Student1("zhangsan",20,"beijing");System.out.print(s.talk());}}abstract class Person4 {String name;int age;String occuption;public abstract String talk();}class Student1 extends Person4 {public Student1( 阅读全文
摘要：
class Person3 {public void fun1() {System.out.println("1.Person1()");}public void fun2() {System.out.println("2.Person2()");}}class Student extends Person3 {public void fun1() {System.out.println("3.Person3()");}public void fun4() {System.out.println("4.Person4()&q 阅读全文