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作者 | Re:各大虾帮忙看看~谢谢 [Re:kakaka0] |
tcxmn
发贴: 10 积分: 0 |
于 2004-12-07 23:40
最终正确的代码如下: import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Adder implements ActionListener { JFrame AdderFrame; JTextField TOprand1; JTextField TOprand2; JLabel LAdd, LSum; JButton BAdd; int i = 0; //构造器--------------------------------------------------- public Adder() { AdderFrame = new JFrame("AdderFrame"); TOprand1 = new JTextField("0.0"); TOprand2 = new JTextField("0.0"); LAdd = new JLabel("+"); LSum = new JLabel("= "); BAdd = new JButton("Add!"); AdderFrame.getContentPane().setLayout(new FlowLayout()); AdderFrame.getContentPane().add(TOprand1); AdderFrame.getContentPane().add(LAdd); AdderFrame.getContentPane().add(TOprand2); AdderFrame.getContentPane().add(LSum); AdderFrame.getContentPane().add(BAdd); AdderFrame.pack(); AdderFrame.setVisible(true); BAdd.addActionListener(this); AdderFrame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { System.exit(0); } }); }//构造器结束---------------------------------------- //实现ActionListener接口-------------------------------------------- public void actionPerformed(ActionEvent event) { i = (i = 1) % 2; if (i == 1) { int sum = (int) (Double.valueOf(TOprand1.getText()).doubleValue() + Double.valueOf(TOprand2.getText()).doubleValue()); LSum.setText("=" + sum); } else { TOprand1.setText("0.0"); TOprand2.setText("0.0"); LSum.setText("="); } } //程序的入口-------------------------------------------- public static void main(String[] args) { Adder adder = new Adder(); } }
tcxmn edited on 2004-12-07 23:44
联想游戏(欢迎跟贴,哈) |
话题树型展开 |
人气 | 标题 | 作者 | 字数 | 发贴时间 |
23344 | 各大虾帮忙看看~谢谢 | kakaka0 | 1650 | 2004-12-02 10:53 |
19040 | Re:各大虾帮忙看看~谢谢 | miaomiao9527 | 19 | 2004-12-03 15:04 |
18680 | Re:各大虾帮忙看看~谢谢 | yorksaddam | 19 | 2004-12-03 22:01 |
18703 | Re:各大虾帮忙看看~谢谢 | kakaka0 | 1714 | 2004-12-05 21:37 |
18694 | Re:各大虾帮忙看看~谢谢 | littledeer1974 | 60 | 2004-12-05 22:08 |
18851 | Re:各大虾帮忙看看~谢谢 | tcxmn | 541 | 2004-12-07 23:30 |
18769 | Re:各大虾帮忙看看~谢谢 | tcxmn | 131 | 2004-12-07 23:36 |
18748 | Re:各大虾帮忙看看~谢谢 | tcxmn | 1736 | 2004-12-07 23:40 |
18799 | Re:各大虾帮忙看看~谢谢 | tcxmn | 30 | 2004-12-07 23:45 |
18921 | Re:各大虾帮忙看看~谢谢 | kakaka0 | 11 | 2004-12-09 07:53 |
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