实验十一：图形界面二

 

实验代码：

 

  1 package 实验11;
  2 
  3 import java.awt.*;
  4 import javax.swing.*;
  5 import java.awt.event.*;
  6 
  7 
  8 public class Jisuanqi extends Frame implements ActionListener{
  9 public Jisuanqi() {
 10 super("计算器");
 11 Frame ff=new Frame("framework test");
 12 ff.setSize(400,100);
 13 ff.setLocation(300,240);
 14 ff.setLayout(new FlowLayout());
 15 final TextField f1=new TextField("10",8);
 16 ff.add(f1);
 17 
 18 //this.add(new Label("+"));
 19 Label l1=new Label("+");
 20 ff.add(l1);
 21 //this.add(new TextField("20",8));
 22 TextField f2=new TextField("20",8);
 23 ff.add(f2);
 24 //this.add(new Button("="));
 25 Button b1=new Button("=");
 26 ff.add(b1);
 27 //this.add(new TextField(10));
 28 TextField f3=new TextField(10);
 29 ff.add(f3);
 30 ff.addWindowListener(new myclose());
 31 ff.setVisible(true);
 32 b1.addActionListener(new ActionListener()
 33 {public void actionPerformed(ActionEvent e)
 34 {double c;
 35 String s1=f1.getText();
 36 double a=Integer.parseInt(s1);
 37 String s2=f2.getText();
 38 double b=Integer.parseInt(s2);
 39 c=a+b;
 40 String m=String.valueOf(c);
 41 f3.setText(m);
 42 
 43 }
 44 
 45 private double Integer(String s) {
 46 return 0;
 47 }
 48 });
 49 
 50 }
 51 
 52 class myclose implements WindowListener{
 53 
 54 public void windowActivated(WindowEvent arg0) {
 55 
 56 }
 57 
 58 public void windowClosed(WindowEvent arg0) {
 59 // TODO Auto-generated method stub
 60 
 61 }
 62 
 63 public void windowClosing(WindowEvent arg0) {
 64 
 65 System.exit(0);
 66 }
 67 
 68 public void windowDeactivated(WindowEvent arg0) {
 69 
 70 }
 71 
 72 public void windowDeiconified(WindowEvent arg0) {
 73 
 74 }
 75 
 76 public void windowIconified(WindowEvent arg0) {
 77 
 78 
 79 }
 80 
 81 public void windowOpened(WindowEvent arg0) {
 82 
 83 
 84 }
 85 
 86 }
 87 
 88  
 89 
 90 public static void main(String[] args) {
 91 
 92 new Jisuanqi();
 93 }
 94 
 95 
 96 public void actionPerformed(ActionEvent arg0) {
 97 
 98 }
 99 
100 
101 }

实验结果：

 

posted @ 2019-06-10 21:08  EvilTime  阅读(199)  评论(0)  编辑  收藏  举报