package studentmanage;import java.awt.*;import javax.swing.*;import java.awt.event.*;import java.sql.*;/** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2005</p> * <p>Company: </p> * @author not attributable * @version 1.0 */public class StudentUpdatePanel extends JPanel {  Connection con=null;  Statement stmt=null;  ResultSet rs=null;  String studentid="";  String name="";  String sex="";  JLabel jLabel1 = new JLabel();  JLabel jLabel2 = new JLabel();  JLabel jLabel3 = new JLabel();  JTextField jTextField1 = new JTextField();  JTextField jTextField2 = new JTextField();  JRadioButton jRadioButton1 = new JRadioButton();  JRadioButton jRadioButton2 = new JRadioButton();  ButtonGroup buttonGroup1 = new ButtonGroup();  JButton jButton1 = new JButton();  JButton jButton2 = new JButton();  MainFrame f;  public StudentUpdatePanel(MainFrame f,String studentid,String name,String sex) {    try {      this.f=f;      this.studentid=studentid;      this.name=name;      this.sex=sex;      jbInit();    }    catch(Exception ex) {      ex.printStackTrace();    }  }  void jbInit() throws Exception {    jLabel1.setFont(new java.awt.Font("Dialog", 0, 16));    jLabel1.setText("學  號");    jLabel1.setBounds(new Rectangle(98, 27, 47, 28));    this.setLayout(null);    jLabel2.setBounds(new Rectangle(98, 72, 47, 28));    jLabel2.setText("姓  名");    jLabel2.setFont(new java.awt.Font("Dialog", 0, 16));    jLabel2.setToolTipText("");    jLabel3.setToolTipText("");    jLabel3.setFont(new java.awt.Font("Dialog", 0, 16));    jLabel3.setText("性  別");    jLabel3.setBounds(new Rectangle(98, 121, 47, 28));    jTextField1.setFont(new java.awt.Font("Dialog", 0, 16));    jTextField1.setMinimumSize(new Dimension(6, 22));    jTextField1.setText("");    jTextField1.setBounds(new Rectangle(166, 27, 146, 28));    jTextField2.setBounds(new Rectangle(166, 72, 146, 28));    jTextField2.setText(this.name);    jTextField2.setMinimumSize(new Dimension(6, 22));    jTextField2.setFont(new java.awt.Font("Dialog", 0, 16));    jRadioButton1.setFont(new java.awt.Font("Dialog", 0, 16));    jRadioButton1.setText("男");    jRadioButton1.setBounds(new Rectangle(174, 118, 48, 34));    jRadioButton2.setBounds(new Rectangle(244, 118, 48, 34));    jRadioButton2.setText("女");    jRadioButton2.setFont(new java.awt.Font("Dialog", 0, 16));    jButton1.setBounds(new Rectangle(109, 170, 77, 38));    jButton1.setFont(new java.awt.Font("Dialog", 0, 16));    jButton1.setText("更新");    jButton1.addActionListener(new StudentUpdatePanel_jButton1_actionAdapter(this));    jButton2.setText("重輸");    jButton2.setFont(new java.awt.Font("Dialog", 0, 16));    jButton2.setToolTipText("");    jButton2.setBounds(new Rectangle(228, 170, 77, 38));    buttonGroup1.add(jRadioButton1);    buttonGroup1.add(jRadioButton2);    if (sex.equals("男"))      jRadioButton1.setSelected(true);    else      jRadioButton2.setSelected(true);    this.add(jLabel2, null);    this.add(jLabel1, null);    this.add(jLabel3, null);    this.add(jTextField1, null);    this.add(jTextField2, null);    this.add(jRadioButton1, null);    this.add(jRadioButton2, null);    this.add(jButton2, null);    this.add(jButton1, null);  }  void jButton1_actionPerformed(ActionEvent e) {    String name=jTextField2.getText().trim();    String sex="";    String sql2="update studentname set name='"        +name+"',sex='"+sex+"' where studentid='";    //判斷輸入是否為空    if(name.equals("")){      JOptionPane.showMessageDialog(this,"姓名不能為空","信息提示",2);      return;    }    //獲得輸入的信息    if(jRadioButton1.isSelected())      sex="男";    if(jRadioButton2.isSelected())      sex="女";    //判斷是否存在相同的學號，若沒有，插入記錄    DbConnect.loadClass();    con=DbConnect.makeConnect("127.0.0.1","StudentScore","sa","");    stmt=DbConnect.makeStatement(con);//    rs=DbConnect.makeResultSet(stmt,sql1);    try{      if (rs.next()) {        //存在相同的學號        JOptionPane.showMessageDialog(this, "該學號已經存在,請重新輸入", "信息提示", 2);        return;      }else{        //插入記錄        stmt.executeUpdate(sql2);        //將窗口顯示內容設置為        f.remove(f.getContentPane());        MessageShowPanel msg=new MessageShowPanel("學生信息已錄入");        f.setContentPane(msg);        f.show();      }    }catch(SQLException e1){      System.out.println("數據庫表訪問異常");    }  }}class StudentUpdatePanel_jButton1_actionAdapter implements java.awt.event.ActionListener {  StudentUpdatePanel adaptee;  StudentUpdatePanel_jButton1_actionAdapter(StudentUpdatePanel adaptee) {    this.adaptee = adaptee;  }  public void actionPerformed(ActionEvent e) {    adaptee.jButton1_actionPerformed(e);  }}