实验十一

Posted 2022-01-01 java199-cxm

一.程序代码

 

package jisuanqi2;

 

import java.awt.*;

 

import javax.swing.*;

 

import java.awt.event.*;

 

public class Jisuanqi extends Frame implements ActionListener

 

public Jisuanqi()

 

super("计算器");

 

Frame ff=new Frame("framework test");

 

ff.setSize(400,100);

 

ff.setLocation(300,240);

 

ff.setLayout(new FlowLayout());

 

final TextField f1=new TextField("10",8);

 

ff.add(f1);

 

//this.add(new Label("+"));

 

Label l1=new Label("+");

 

ff.add(l1);

 

//this.add(new TextField("20",8));

 

TextField f2=new TextField("20",8);

 

ff.add(f2);

 

//this.add(new Button("="));

 

Button b1=new Button("=");

 

ff.add(b1);

 

//this.add(new TextField(10));

 

TextField f3=new TextField(10);

 

ff.add(f3);

 

ff.addWindowListener(new myclose());

 

ff.setVisible(true);

 

b1.addActionListener(new ActionListener()

 

public void actionPerformed(ActionEvent e)

 

double c;

 

String s1=f1.getText();

 

double a=Integer.parseInt(s1);

 

String s2=f2.getText();

 

double b=Integer.parseInt(s2);

 

c=a+b;

 

String m=String.valueOf(c);

 

f3.setText(m)

 

private double Integer(String s)

 

return 0;

 

 

);

 

 

class myclose implements WindowListener

 

public void windowActivated(WindowEvent arg0)

 

 

public void windowClosed(WindowEvent arg0)

 

// TODO Auto-generated method stub

 

 

public void windowClosing(WindowEvent arg0)

 

System.exit(0);

 

 

public void windowDeactivated(WindowEvent arg0)

 

 

public void windowDeiconified(WindowEvent arg0)

 

 

public void windowIconified(WindowEvent arg0)

 

 

public void windowOpened(WindowEvent arg0)

 

 

 

public static void main(String[] args)

 

new Jisuanqi();

 

 

public void actionPerformed(ActionEvent arg0)

 

 

二.实验心得

 

       本次实验在上一次实验的基础上添加新的功能，用以实现

 

为控件加监测实现驱动。在编写过程中遇到很多问题，不过在

 

同学的帮助下解决了。对图形界面知识点的掌握还是不够熟练,