Java图形用户界面通讯录

用Java编写的图形用户界面通讯录package myaddressbody; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.Connection; import java.sql.Date; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; import javax.swing.JButton; public class Demonstrationacction implements ActionListener { public void actionPerformed(ActionEvent e) { if (((JButton) e.getSource()).getText().equals("显示查询结果")) { String dburl = "jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=main.mdb"; String sql; Connection con; Statement stmt; String nm, sx, mp, ph, em, ca, ha, nb, gp, lbMQ, all; boolean bdr; Date bd; try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); } catch (java.lang.ClassNotFoundException e2) { System.err.print("ClassNotFoundException:"); System.err.println(e2.getMessage()); } try { con = DriverManager.getConnection(dburl, "", ""); stmt = con.createStatement(); sql = "SELECT*FROM address"; ResultSet ws = stmt.executeQuery(sql); while (ws.next()) { nm = ws.getString(1); sx = ws.getString(2); bd = ws.getDate(3); mp = ws.getString(4); ph = ws.getString(5); ca = ws.getString(6); em = ws.getString(7); ha = ws.getString(8); gp = ws.getString(9); nb = ws.getString(10); lbMQ = ws.getString(11); all = "姓名:" + nm + " 性别:" + sx + " 生日:" + bd + " 移动电话:" + mp + " 固定电话:" + ph + " MSN/QQ:" + lbMQ + " 公司地址:" + ca + " EMail:" + em + " 家庭地址:" + ha + " 组别" + gp + " 备注:" + nb + "\n"; Demonstrationaframe.lbdem.append(all); } stmt.close(); con.close(); } catch (Exception ex) { System.out.println("Exception:" + ex.getMessage()); } } if (((JButton) e.getSource()).getText().equals("退出全部查询")) { Demonstrationaframe.lbdem.setText(""); Demonstrationaframe.demFrame.setVisible(false); } } }