摘要： class A{public void test(){int a=10; int b=20; System.out.println('a'); System.out.println('b'); System.out.println(a); System.out.println(b);}}public class ZiFu{public static void main(String arg[]){A a=new A();a.test();}} 阅读全文

摘要： abstract class Math{public abstract void f(int x);public abstract void g(int x,int y);public abstract double h(double x);}class Cheng extends Math{int x=10;int y=10;public void f(int x){System.out.println("我爱乘法");System.out.printf("x=%d",x);}public void g(int x,int y){System.out. 阅读全文