instructions.java~5~

学生信息管理系统,包括成绩查询,成绩排序,用ACCESS做数据库连接

package Chapter1;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import java.awt.Rectangle;
import java.awt.Font;

public class Instructions extends JFrame implements ActionListener
{
  public static final int WIDTH=400;
  public static final int HEIGHT=400;
  JLabel jLabel1 = new JLabel();
  JButton jButton1 = new JButton();
  public Instructions()
  {
    setSize(WIDTH,HEIGHT);
    setTitle("使用说明");
    Container contentPane=getContentPane();
    contentPane.setBackground(Color.green);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  public void actionPerformed(ActionEvent e)
  {
     if  (e.getActionCommand().equals("返回"))
     {
           this.setVisible(false);
           ManagerInterface n1= new ManagerInterface();
           StudentInterface n2=new  StudentInterface();
           if(Login.jComboBox1.getSelectedIndex()==0)
                 {  n1.setVisible(true);  n2.setVisible(false);}
           else if(Login.jComboBox1.getSelectedIndex()==1)
                 {  n2.setVisible(true);  n1.setVisible(false); }
     }
  }
  public static void main(String[] args)
  {
      Instructions n=new Instructions();
      n.setVisible(true);
  }
  private void jbInit() throws Exception {
    jLabel1.setFont(new java.awt.Font("Dialog", 1, 13));
    jLabel1.setRequestFocusEnabled(true);
    jLabel1.setText("此系统用于管理学生信息,包括学生信息的输入和查询等功能!");
    jLabel1.setBounds(new Rectangle(8, 56, 376, 152));
    this.getContentPane().setLayout(null);
    jButton1.setBounds(new Rectangle(169, 242, 73, 25));
    jButton1.setFont(new java.awt.Font("Dialog", 1, 13));
    jButton1.setText("返回");
    this.getContentPane().add(jLabel1, null);
    this.getContentPane().add(jButton1, null);
    jButton1.addActionListener(this);
  }
}