JAVA—GUI（图形用户界面）编程

来源：互联网发布：卖男装的淘宝店铺编辑：程序博客网时间：2024/05/18 03:56
import java.awt.*;import java.awt.event.*;class Demo{private Frame f;private Button but;private TextField tf;static int i = 0;Demo(){init();}public void init(){f = new Frame("Demo");f.setBounds(300,100,600,500); //设置位置和大小，距离左边（y轴）300，距离上面（x轴）100；//长600，高500；f.setLayout(new FlowLayout());  tf = new TextField("我爱你",20);but = new Button("按钮");f.add(tf);f.add(but);f.setVisible(true);myEvent();    // 调用X关闭事件System.out.println("hahahahaahaha");}private void myEvent(){f.addWindowListener(new WindowAdapter() //使得能够按X能够关闭框框；{public void windowClosing(WindowEvent e){//System.out.println(i); //用来记录按了几次按钮 System.exit(0);}}); but.addActionListener(new ActionListener()  //设置按钮点击事件{public void actionPerformed(ActionEvent e){System.out.println("action on");i++;}});but.addMouseListener(new MouseAdapter()//鼠标点击事件 {private int count = 1,clickCount = 1;public void mouseEntered(MouseEvent e) // 鼠标进入 激发时间{System.out.println("mouse enter" + count++);}public void mouseClicked(MouseEvent e) //鼠标点击事件{if(e.getClickCount() == 2)System.out.println("mouse click" + clickCount++);}});tf.addKeyListener(new KeyAdapter() //键盘事件{public void keyPressed(KeyEvent e){int code = e.getKeyCode();if(!(code>= KeyEvent.VK_0 && code<=KeyEvent.VK_9))// 设置只能输入数字，而且code代表单个输入的ascll码，//而KeyEvent.VK_0=48；KeyEvent.VK_9=57；{System.out.println(code + "……是非法的！");  e.consume(); //用来屏蔽键盘}if(e.getKeyCode() == KeyEvent.VK_ESCAPE) //实现按Esc为退出键；System.exit(0);if(e.isControlDown() && e.getKeyCode() == KeyEvent.VK_ENTER)//结合组合键Ctrl+Enter；System.out.println("Hello");}});/*but.addKeyListener(new KeyAdapter(){public void keyPressed(KeyEvent e){if(e.getKeyCode() == KeyEvent.VK_ESCAPE)System.exit(0);if(e.isControlDown() && e.getKeyCode() == KeyEvent.VK_ENTER)//结合组合键Ctrl+Enter；System.out.println("Hello");}});*/}public static void main(String[] args){new Demo();}}
0 0