java 窗口关闭的六种方法
1.使用JFrame的enableEvents和processWindowEvent
//Frame1.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Frame1 extends JFrame {
public Frame1() {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
this.setSize(new Dimension(400, 300));
this.setTitle("Frame1");
}
protected void processWindowEvent(WindowEvent e) {
super.processWindowEvent(e);
if (e.getID() == WindowEvent.WINDOW_CLOSING) {
System.exit(0);
}
}
}
2.直接实现WindowListener接口
//Frame1.java
import java.awt.*;
import java.awt.event.*;
public class Frame1 extends Frame implements WindowListener {
public Frame1() {
this.setSize(new Dimension(400, 300));
this.setTitle("Frame1");
this.addWindowListener(this);
}
public void windowClosing(WindowEvent windowEvent) {
System.exit(0);
}
public void windowOpened(WindowEvent windowEvent) { }
public void windowClosed(WindowEvent windowEvent) { }
public void windowIconified(WindowEvent windowEvent) { }
public void windowDeiconified(WindowEvent windowEvent) { }
public void windowActivated(WindowEvent windowEvent) { }
public void windowDeactivated(WindowEvent windowEvent) { }
}
3.直接继承窗体适配器WindowAdapter
//Frame1.java
import java.awt.*;
import java.awt.event.*;
public class Frame1 extends WindowAdapter {
public Frame1() {
Frame f=new Frame();
f.setSize(new Dimension(400, 300));
f.setTitle("Frame1");
f.addWindowListener(this);
f.setVisible(true);
}
public static void main(St
相关文档：
import java.util.Scanner;
public class Game{
void welcome(){
println("欢迎来到剪刀石头布游戏");
}
Choice getUserChoice(){
println("请选择\t[1]剪刀\t[2]石头\t[3]布");
Scanner sc= new Scanner(System.in);
int userCh ......
package OALogic.sql.data;
import java.io.*;
public class FileOperate {
public FileOperate() {
}
public static void main(String args[]){
newFolder("D:/100");
}
/**
......
Java学习路线
先学习j2se
要学习j2ee就要先学习j2se，刚开始学习j2se先建议不要使用IDE，然后渐渐的过渡到使用IDE开发，毕竟用它方便嘛。学习j2se推荐两本书，《java2核心技术一二卷》，《java编程思想》，《java模式》。其中《java编程思想》要研读，精读。这一段时间是基本功学习，时间会很长，也可能很短，这要看学� ......
今天同学问我一个Java问题，代码结构如下：
Scanner scan = new Scanner(System.in);
scan.next();
scan.close();
scan = new Scanner(System.in);
scan.next();
当程序运行到第五行是会抛出java.util.NoSuchElementException
at&nb ......
常见的JAVA程序包括以下类别：
*直接在console上运行的类(包括可视化界面的类)
*JSP代码类（注：JSP是Servlets类的变型）
*Servelets类
*EJB类
*其它不可以直接运行的支持类
这些类文件中，都有可能含有中文字符串，并且常用前三类JAVA程序和用户直接交互，用于输出和输入字符，如：在JSP和Servlet中得到客户 ......
