1. package change;
   
2. import javax.swing.*;
   
3. import java.awt.FlowLayout;
   
4. import javax.swing.JTextField;
   
5. import java.awt.event.ActionListener;
   
6. import java.awt.event.ActionEvent;
   
7. 
   
8. 
   
9. 
   
10. 
    
11. public class text extends JFrame implements ActionListener{
    
12. int a ;
    
13. JTextField jfd1=new JTextField(9);
    
14. JTextField jfd2=new JTextField(9);
    
15. JButton jbt1=new JButton("确定");
    
16. FlowLayout fly=new FlowLayout();
    
17. text(){
    
18. super("测试");
    
19. setSize(300,300);
    
20. setLocation(300,300);
    
21. setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
22. this.getContentPane().add(jfd1);
    
23. this.getContentPane().add(jfd2);
    
24. this.getContentPane().add(jbt1);
    
25. this.getContentPane().setLayout(fly);
    
26. jbt1.addActionListener(this);
    
27. show();
    
28. }
    
29. public void actionPerformed(ActionEvent actionEvent) {
    
30. }
    
31. 
    
32. public void actionPerformes(ActionEvent e){
    
33. if(e.getSource()==jbt1){
    
34. String str =jfd1.getText();
    
35. 
    
36. try {
    
37. a = Integer.parseInt(str);
    
38. }
    
39. catch (Exception ex) {
    
40. ex.printStackTrace();
    
41. }
    
42. 
    
43. Double b = new Double(a);
    
44. jfd2.setText(b.toString());
    
45. 
    
46. }
    
47. 
    
48. }
    
49. 
    
50. public static void main(String[] args) {
    
51. text tex=new text();
    
52. }
    
53. 
    
54. 
    
55. }

复制代码

1. package change;
   
2. import javax.swing.*;
   
3. import java.awt.FlowLayout;
   
4. import javax.swing.JTextField;
   
5. import java.awt.event.ActionListener;
   
6. import java.awt.event.ActionEvent;
   
7. 
   
8. 
   
9. 
   
10. 
    
11. public class text extends JFrame implements ActionListener{
    
12. int a ;
    
13. JTextField jfd1=new JTextField(9);
    
14. JTextField jfd2=new JTextField(9);
    
15. JButton jbt1=new JButton("确定");
    
16. FlowLayout fly=new FlowLayout();
    
17. text(){
    
18. super("测试");
    
19. setSize(300,300);
    
20. setLocation(300,300);
    
21. setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
22. this.getContentPane().add(jfd1);
    
23. this.getContentPane().add(jfd2);
    
24. this.getContentPane().add(jbt1);
    
25. this.getContentPane().setLayout(fly);
    
26. jbt1.addActionListener(this);
    
27. show();
    
28. }
    
29. public void actionPerformed(ActionEvent actionEvent) {
    
30. }
    
31. 
    
32. public void actionPerformes(ActionEvent e){
    
33. if(e.getSource()==jbt1){
    
34. String str =jfd1.getText();
    
35. 
    
36. try {
    
37. a = Integer.parseInt(str);
    
38. }
    
39. catch (Exception ex) {
    
40. ex.printStackTrace();
    
41. }
    
42. 
    
43. Double b = new Double(a);
    
44. jfd2.setText(b.toString());
    
45. 
    
46. }
    
47. 
    
48. }
    
49. 
    
50. public static void main(String[] args) {
    
51. text tex=new text();
    
52. }
    
53. 
    
54. 
    
55. }

复制代码