
IP属地:安徽
抽象类 子类一: 子类二: 关键点: 语法:1 .抽象类的前边需要adstract关键字声明 接口interface 子类一:implements 子类二: 1.关键字int...
``` public class demo2 { public static void main(String[] args) { for (int i = 0;...
public static void main(String[] args) { //JDK JVM OS(操作系统) 规定的程序入口Oracle /** * (...
``` package edu.xcdq; import java.util.Scanner; public class Demo01 { public static voi...
Teach Yourself Programming in Ten Years Peter Norvig Why is everyone in such a rush? Wa...