Question

编写一个Applet程序，该程序能通过单击按钮【求立方】，就能够输出文本框中输入数据的立方

需要具体点的，考试急用，谢谢

Answer 1

import java.applet.*;
import java.awt.*;
import java.awt.event.*;

public class lifang extends Applet implements ActionListener
{
Label lbl1= new Label ("请输入数字");
Label lbl2= new Label ("此处显示结果");

TextField tf1 = new TextField (10);
Button btn = new Button ( "求立方");

public void init()
{
add (lbl1);
add (tf1);

add (btn);
add (lbl2);
this.resize(300,100);
btn.addActionListener (this);
}

public void actionPerformed (ActionEvent e)
{
String start = tf1.getText();

int result= Integer.parseInt(start) *Integer.parseInt(start)*Integer.parseInt(start)
lbl2.setText ("立方是："+ result);
}
}