swing中JTable的使用

package table; import java.awt.*; import javax.swing.*; import javax.swing.table.*; import java.awt.event.*; public class MyTable extends JFrame implements MouseListener, ActionListener { public static void main(String[] args) { new MyTable(); } JPanel contentPane; String[] title = { "学号", "姓名", "年龄", "性别" }; String[][] data = { { "1", "刘敏", "23", "女" }, { "2", "李四", "23", "男" }, { "3", "王瓜", "38", "男" }, { "4", "谢二", "50", "男" } }; DefaultTableModel modal = new DefaultTableModel(data, title); JTable jTable1 = new JTable(modal) { // 设置是否可以编辑 如果不是第一列可以编辑 public boolean isCellEditable(int row, int column) { if (column == 0) { return false; } else { return true; } } }; JScrollPane jScrollPane1 = new JScrollPane(jTable1,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); JLabel labNum = new JLabel(); JTextField txtNum = new JTextField(); JLabel labName = new JLabel(); JTextField txtName = new JTextField(); JLabel labAge = new JLabel(); JTextField txtAge = new JTextField(); JLabel labSex = new JLabel(); JTextField txtSex = new JTextField(); JButton jButton1 = new JButton(); JButton jButton2 = new JButton(); // 创建表头 public MyTable() { setVisible(true);// 设置可见 setDefaultCloseOperation(EXIT_ON_CLOSE);// 设置点击关闭按钮时可以退出 contentPane = (JPanel) getContentPane();// 得到JFrame的内容面板 contentPane.setLayout(null);// 面板布局模式为null setSize(new Dimension(800, 600));// 封装了一个构件的高度和宽度 设置方格的大小 setTitle("Frame Title");// 设置标题 //自定义图形左上角的图片 也就是logo Toolkit tk = Toolkit.getDefaultToolkit(); Image i = tk.getImage(this.getClass().getResource("1.jpg")); this.setIconImage(i); this.setResizable(false);//右上角的变大按钮失效 //背景画出来：URL：图片的地址，通过类的反射。 ImageIcon img = new ImageIcon(this.getClass().getResource("1.jpg")); //JLabel作为背景层 JLabel imgLabel = new JLabel(img); //把这个JLabel放到背景层去 this.getLayeredPane().add(imgLabel, new Integer(Integer.MIN_VALUE));//把图片放在最底层 //设置大小 imgLabel.setBounds(0,0,800, 600); contentPane.setOpaque(false);//设置内容层透明 jScrollPane1.setBounds(new Rectangle(82, 35, 220, 203)); // Rectangle 指定了坐标空间中的一个区域， // 通过 Rectangle 对象的左上顶点的坐标（x，y）、宽度和高度可以定义这个区域。 labNum.setText("学号:"); labNum.setBounds(new Rectangle(29, 259, 87, 49)); txtNum.setBounds(new Rectangle(78, 271, 200, 23)); labName.setText("姓名："); labName.setBounds(new Rectangle(29, 306, 73, 43)); txtName.setBounds(new Rectangle(78, 321, 200, 19)); labAge.setText("年龄:"); labAge.setBounds(new Rectangle(29, 352, 82, 43)); txtAge.setBounds(new Rectangle(78, 364, 200, 22)); labSex.setText("性别:"); labSex.setBounds(new Rectangle(29, 408, 70, 41)); txtSex.setBounds(new Rectangle(78, 413, 200, 22)); jTable1.addMouseListener(this); // 给这个jtabel添加监听 把选中的行数据加载到文本输入框中 jButton1.setBounds(new Rectangle(32, 460, 170, 35)); jButton1.setText("删除选中的列"); jButton1.addActionListener(this); jButton2.setBounds(new Rectangle(239, 462, 138, 33)); jButton2.setText("增 加"); jButton2.addActionListener(this); jTable1.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); contentPane.add(jScrollPane1); contentPane.add(labName); contentPane.add(labAge); contentPane.add(labSex); contentPane.add(labNum); contentPane.add(txtNum); contentPane.add(txtName); contentPane.add(txtAge); contentPane.add(txtSex); contentPane.add(jButton1); contentPane.add(jButton2); // jScrollPane1.getViewport().add(jTable1);//getViewport():设置可见 } @Override public void actionPerformed(ActionEvent e) { if (jButton1 == e.getSource()) { // 得到要删除的行 int row = jTable1.getSelectedRow(); if (row != -1) { TableModel tableModel = jTable1.getModel(); DefaultTableModel dtm = (DefaultTableModel) tableModel; /* * TableModel是一个接口 没有删除一行的方法 * AbstractTableModel是TableModel的实现类（抽象类） 也没有删除一行的方法 * DefaultTableModel继承了AbstractTableModel 这个类中有删除一行的方法 */ dtm.removeRow(row); txtNum.setText(""); txtName.setText(""); txtAge.setText(""); txtSex.setText(""); /* * 删除所有行的方法： int count=dtm.getRowCount(); for(int i=0;i<count;i++){ System.out.println(count-i-1); dtm.removeRow(count-i-1); } */ } else { System.out.println("请选中删除hag"); } } else if (jButton2 == e.getSource()) { // 添加记录 String id = txtNum.getText(); String Name = txtName.getText(); String Age = txtAge.getText(); String Sex = txtSex.getText(); String[] s = { id, Name, Age, Sex }; modal.addRow(s); txtNum.setText(""); txtName.setText(""); txtAge.setText(""); txtSex.setText(""); } } @Override public void mouseClicked(MouseEvent e) { int row = jTable1.getSelectedRow();// 得到鼠标点击的行 TableModel model = jTable1.getModel();// ?? if (row != -1) {// 如果不是第一列 // 获取行,列 String id = model.getValueAt(row, 0).toString(); String Name = model.getValueAt(row, 1).toString(); String Age = model.getValueAt(row, 2).toString(); String Sex = model.getValueAt(row, 3).toString(); txtNum.setText(id); txtName.setText(Name); txtAge.setText(Age); txtSex.setText(Sex); } } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } @Override public void mousePressed(MouseEvent e) { } @Override public void mouseReleased(MouseEvent e) { } }