实验十一:图形界面二

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,

以后还需要加强训练。

上一篇:flutter: TextField换行自适应


下一篇:rxswift的双向绑定