Java技术————创建窗口

import java.awt.Container;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.FocusEvent;import java.awt.event.FocusListener;import javax.swing.AbstractListModel;import javax.swing.ButtonGroup;import javax.swing.JButton;import javax.swing.JComboBox;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JList;import javax.swing.JOptionPane;import javax.swing.JPanel;import javax.swing.JPasswordField;import javax.swing.JRadioButton;import javax.swing.JScrollPane;import javax.swing.JTextField;import javax.swing.SwingConstants;import javax.swing.WindowConstants;public class Register extends JFrame implements ActionListener, FocusListener {private static final String ADD = "ADD";private static final String CANCEL = "ADD";private static final long serialV ersionUID = 4573735051740981321L;private JRadioButton man;private JRadioButton woman;private JTextField name_jf;private JPasswordField password1_jf;private JPasswordField password2_jf;private JComboBox education_cb;private JList hobby_jl;private JButton submit;private JButton cancel;private JPanel panel1;String[] str={"大学","专科","高中"};String[] str1={"跑步","看书","打球"};private ButtonGroup bg=new ButtonGroup();public static void main(String[] args){new Register();}public Register() {Container con=getContentPane();setTitle("注册");setLayout(new GridLayout(10,8,8,8));con.add(new JLabel("用户名：",SwingConstants.CENTER));name_jf=new JTextField(8);con.add(name_jf);con.add(new JLabel("密码：",0));password1_jf=new JPasswordField(18);con.add(password1_jf);con.add(new JLabel("确认密码：",0));password2_jf=new JPasswordField(18);con.add(password2_jf);password2_jf.addFocusListener(this);con.add(new JLabel("性别：",0));woman = new JRadioButton();man = new JRadioButton();bg.add(man);bg.add(woman);woman.setSelected(true);woman.setText("女");man.setText("男");panel1=new JPanel();panel1.add(woman);panel1.add(man);con.add(panel1);con.add(new JLabel("学历：",0));education_cb = new JComboBox(str);con.add(education_cb);con.add(new JLabel("爱好：",0));hobby_jl = new JList(str1);con.add(hobby_jl);con.add(getSubmit());con.add(getCancel());setSize(500, 600);setVisible(true);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);this.setResizable(false);}private JButton getCancel(){if (cancel == null){cancel = new JButton();cancel.setText("取消");cancel.setActionCommand(CANCEL);cancel.addActionListener(this);}return cancel;}private JButton getSubmit(){if (submit == null){submit = new JButton();submit.setText("注册");submit.setActionCommand(ADD);submit.addActionListener(this);}return submit;}public void focusGained(FocusEvent e) {//password2_jf.requestFocus();}@SuppressWarnings("deprecation")public void focusLost(FocusEvent e) {JPasswordField text=(JPasswordField)e.getSource();if(!text.getText().equals(password1_jf.getText())) {JOptionPane.showMessageDialog(this, "密码不匹配");//password2_jf.requestFocus();}}@SuppressWarnings("deprecation")public void actionPerformed(ActionEvent e){String action = e.getActionCommand();System.out.println(action);if (action != null && ADD.equals(action)){StringBuffer sb=new StringBuffer();sb.append("姓名: ").append(name_jf.getText()).append("\n").append("密码: ").append(password1_jf.getText()).append("\n").append("性别: ");if(woman.isSelected())sb.append("女\n");elsesb.append("男\n");sb.append("学历: ").append(str[education_cb.getSelectedIndex()]);sb.append("\n");sb.append("爱好: ");int[] hobby=hobby_jl.getSelectedIndices();for(int i=0;i<hobby.length;i++){sb.append(str1[hobby[i]]+" ");}JOptionPane.showMessageDialog(this, sb.toString());}else if (action != null && action.equals(CANCEL)){name_jf.setText("");password1_jf.setText("");password2_jf.setText("");woman.setSelected(true);man.setSelected(false);}}}@SuppressWarnings("serial")class JListTest extends JFrame {public JListTest() {Container cp = getContentPane();cp.setLayout(null);JList jl = new JList(new MyListModel());JScrollPane js = new JScrollPane(jl);js.setBounds(10, 10, 100, 100);cp.add(js);setTitle("在这个窗体中使用了列表框");setSize(200, 150);setVisible(true);setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);}public static void main(String args[]) {new JListTest();}}class MyListModel extends AbstractListModel {private String[] contents = { "列表1", "列表2", "列表3", "列表4", "列表5", "列表6" };public Object getElementAt(int x) {if (x < contents.length)return contents[x++];elsereturn null;}public int getSize() {return contents.length;}}。