creator平

//静态方法package nyist.com;class Per{ int n; public static void Say()//定义静态方法 { System.out.println("默认输出"); }}public class Demo{ public static void main(String[] atgs) { Per.Say();//调用静态...

package we;class Animal{ String name;//基类构造函数 Animal() { System.out.println("父类构造"); } void shout() { System.out.println("动物声音"); }}class Dog extends Animal//Dog继承Animal类{ Dog()//子类构...

//多线程//第一种方法package we;public class me{ public static void main(String[] args) { My p=new My(); p.start();//启用多线程 while(true) { System.out.println("main在运行"); } }}c...

import java.math.BigInteger;public class Main {public static void main(String[] args) {String num1 = "999999999999999999999999999999";String num2 = "999999999999999999999999999998";BigInteger bi...

//String类public class Main{ public static void main(String[] args) { String str1=new String(); String str2=new String("abcd"); char[] charArray=new char[] {'D','E','F'}; String str3=new S...

//AWT事件处理import java.awt.event.*;import java.awt.*;public class Main{ static public void main(String[] args) { Frame f=new Frame("我的窗体！");//创建窗口 f.setSize(400,300); f.setLocation(300,200)...