java登陆窗口例子

package bc; import java.awt.BorderLayout; import javax.swing.JFrame; import javax.swing.JLabel; import java.awt.Rectangle; import javax.swing.JTextField; import javax.swing.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; /** * <p>Title: </p> * * <p>Description: </p> * * <p>Copyright: Copyright (c) 2008</p> * * <p>Company: </p> * * @author not attributable * @version 1.0 */ public class test extends JFrame { public test() { try { jbInit(); this.setTitle("test"); this.setSize(400,350); this.setVisible(true); this.setDefaultCloseOperation(this.EXIT_ON_CLOSE); } catch (Exception exception) { exception.printStackTrace(); } } private void jbInit() throws Exception { getContentPane().setLayout(null); jLabel1.setHorizontalAlignment(SwingConstants.CENTER); jLabel1.setText("用户一"); jLabel1.setBounds(new Rectangle(54, 75, 108, 37)); jButton1.addActionListener(new test_jButton1_actionAdapter(this)); this.getContentPane().add(jLabel1); jButton2.setBounds(new Rectangle(289, 249, 85, 33)); jButton2.setText("显示"); jButton2.addActionListener(new test_jButton2_actionAdapter(this)); jButton1.setBounds(new Rectangle(289, 208, 85, 33)); jButton1.setToolTipText(""); jButton1.setText("重置"); jTextField3.setEnabled(false); jTextField3.setBounds(new Rectangle(54, 215, 182, 33)); jTextField2.setBounds(new Rectangle(194, 140, 145, 36)); jTextField1.setBounds(new Rectangle(194, 75, 145, 36)); this.getContentPane().add(jLabel2); this.getContentPane().add(jTextField1); this.getContentPane().add(jTextField2); this.getContentPane().add(jTextField3); this.getContentPane().add(jButton1); this.getContentPane().add(jButton2); jLabel2.setHorizontalAlignment(SwingConstants.CENTER); jLabel2.setText("用户二"); jLabel2.setBounds(new Rectangle(54, 140, 108, 37)); } JLabel jLabel1 = new JLabel(); JLabel jLabel2 = new JLabel(); JTextField jTextField1 = new JTextField(); JTextField jTextField2 = new JTextField(); JTextField jTextField3 = new JTextField(); JButton jButton1 = new JButton(); JButton jButton2 = new JButton(); public void jButton2_actionPerformed(ActionEvent e) { String a1=null,a2=null; if(e.getSource()==jButton2) { a1=jTextField1.getText(); a2=jTextField2.getText(); } jTextField3.setText("用户一"+a1+"\t"+"用户二"+a2); } public static void main(String[] args) { new test(); } public void jButton1_actionPerformed(ActionEvent e) { if(e.getSource()==jButton1) { jTextField1.setText(""); jTextField2.setText(""); jTextField3.setText(""); } } } class test_jButton2_actionAdapter implements ActionListener { private test adaptee; test_jButton2_actionAdapter(test adaptee) { this.adaptee = adaptee; } public void actionPerformed(ActionEvent e) { adaptee.jButton2_actionPerformed(e); } } class test_jButton1_actionAdapter implements ActionListener { private test adaptee; test_jButton1_actionAdapter(test adaptee) { this.adaptee = adaptee; } public void actionPerformed(ActionEvent e) { adaptee.jButton1_actionPerformed(e); } }