swing输入框内容即时同步到其他输入框中

当swing面板中有很多密码输入框，有时需要填写一个其他的可以即时同步。而swing面板不同于HTML页面，需要添加事件监听事件addKeyListener（）来进行同步。下面是简单的原理实现。

import java.awt.GridLayout;  import java.awt.event.KeyAdapter;import java.awt.event.KeyEvent;import javax.swing.JFrame;  import javax.swing.JLabel;  import javax.swing.JPanel;  import javax.swing.JTextField;  import javax.swing.border.EmptyBorder;    public class textAreaTest extends JFrame{  JTextField name;JTextField age;JTextField address;    public textAreaTest(){              this.setTitle("文本框");          this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);          this.setBounds(100, 100, 250, 200);          JPanel contentPane=new JPanel();          contentPane.setBorder(new EmptyBorder(5,5,5,5));          this.setContentPane(contentPane);          contentPane.setLayout(new GridLayout(3,1,5,5));          JPanel pane1=new JPanel();          contentPane.add(pane1);          JPanel pane2=new JPanel();          contentPane.add(pane2);          JPanel pane3=new JPanel();          contentPane.add(pane3);          JLabel label1=new JLabel("姓名：");                    name=new JTextField();          name.setColumns(10);          pane1.add(label1);          pane1.add(name);          JLabel label2=new JLabel("年龄：");          age=new JTextField();          age.setColumns(10);          pane2.add(label2);          pane2.add(age);          JLabel label3=new JLabel("住址：");          address=new JTextField();          address.setColumns(10);          pane3.add(label3);          pane3.add(address);          this.setVisible(true);                  name.addKeyListener(new KeyAdapter() {//键盘事件            @Override            public void keyPressed(KeyEvent e) {//按压            age.setText(name.getText());            }            @Override            public void keyTyped(KeyEvent e) {//敲击            age.setText(name.getText());             }            @Override            public void keyReleased(KeyEvent e) {//释放            age.setText(name.getText());            }        });    }      public static void main(String[]args){          new textAreaTest();              }  }