Jtable和JTree的写法示例代码

package com.jTablehomework;
import java.awt.*;
import java.lang.reflect.Field;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Vector;
import javax.swing.*;
import com.dao.CRUDDAO;
import com.entry.Login;
/**
 * 
 * @author zzy
 * 
 *   2016年12月1日下午1:52:29
 */
public class JTableDemo extends JFrame {
 private JScrollPane jsp;
 private JTable jt;
 private DefaultTableModel tableModel;

 public static void main(String[] args) {
  new JTableDemo();
 }
 public JTableDemo() {
  init();
  setSize(400, 500);
  setLocationRelativeTo(null);
  setVisible(true);
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 }
 private void init() {
  Container con = getContentPane();
  con.setLayout(new BorderLayout());
  createJTable(con);
 }
 public void createJTable(Container con) {
  JLabel jl = new JLabel("用户信息");
  jl.setHorizontalAlignment(SwingConstants.CENTER);
  addData();
  jt = new JTable(tableModel) {
   @Override
   public boolean isCellEditable(int row, int column) {
    return false;
   }
  };
  System.out.println(jt.getName());
  // 用来获得鼠标点击位置的内容
  jt.addMouseListener(new MouseAdapter() {
   public void mouseClicked(MouseEvent e) {
    int selectRow = jt.getSelectedRow();
    // System.out.println(selectRow);
    // int selectcow = jt.getSelectedColumn();
    for (int i = 0; i < jt.getColumnCount(); i++) {
     System.out.print(jt.getColumnName(i) + ":");
     System.out.print(jt.getValueAt(selectRow, i) + "\t");
    }
    System.out.println();
    // System.out.println(selectcow);
    // System.out.println(tableModel.getValueAt(selectRow,
    // selectcow));
    Vector v = tableModel.getDataVector();

   }
  });
  jt.setRowHeight(30);// 设置表格的行高
  jt.setSelectionForeground(Color.red);// 设置选中的文字颜色
  jsp = new JScrollPane(jt);
  jsp.setViewportView(jt);
  con.add(jl, BorderLayout.NORTH);
  con.add(jsp, BorderLayout.CENTER);
 }
 public void addData() {
  List<Login> list = getData();
  Field[] field = Login.class.getDeclaredFields();
  /**
   * 设置标题
   */
  Object columnNames[] = new Object[field.length];
  for (int i = 0; i < field.length; i++) {
   columnNames[i] = field[i].getName();
  }
  /**
   * 填充内容
   */
  Object rowData[][] = new Object[list.size()][];
  for (int i = 0; i < list.size(); i++) {
   Login l = list.get(i);
   Object ob[] = new Object[field.length];
   for (int j = 0; j < field.length; j++) {
    field[j].setAccessible(true);
    try {
     ob[j] = field[j].get(l);
    } catch (IllegalArgumentException e) {
     e.printStackTrace();
     System.out.println("底层字段不可访问");
    } catch (IllegalAccessException e) {
     e.printStackTrace();
     System.out.println("对象不是声明字段的实例");
    }// 返回此对象上此字段的值
    rowData[i] = ob;
   }
  }
  tableModel = new DefaultTableModel(rowData, columnNames);
 }
 public List<Login> getData() {
  String sql = "select * from Login";
  Map<String, Object[]> m = new LinkedHashMap<String, Object[]>();
  m.put(sql, null);
  return new CRUDDAO<Login>(Login.class).selectAll(m).get(1);
 }
}