xgframe.java

选修课管理系统 调查学校教务处

package com.jm;

import java.awt.*;
import java.awt.event.*;
import java.sql.ResultSet;
import java.sql.SQLException;

import javax.swing.*;

import com.lj.LianJie;

//定义学生报名后修改课程界面
public class Xgframe {
	
	JFrame frame;
	JPanel p1,p2,p3,p4;
	JTextField t1;
	JButton b1,b2;
	JComboBox ch;
	
	public void setxgframe() {
		
		frame = new JFrame();
		frame.setLocation(300,300);
		frame.setSize(350, 200);
		frame.setTitle("修改窗口");
		frame.setLayout(new GridLayout(4,1));
		
		
		p1 = new JPanel();
		p2 = new JPanel();
		p3 = new JPanel();
		p4 = new JPanel();
		p1.setBackground(Color.white);
		p2.setBackground(Color.white);
		p3.setBackground(Color.white);
		p4.setBackground(Color.white);
		frame.add(p1);
		frame.add(p2);
		frame.add(p3);
		frame.add(p4);
		p1.add(new JLabel("请输入姓名:"));
		t1 = new JTextField(10);
		p1.add(t1);
		p2.add(new JLabel("请选择课程:"));
		ch = new JComboBox();
		LianJie lj=new LianJie();
		ResultSet rs=lj.select("select *from kc");
		try {
			while(rs.next()){
				ch.addItem(rs.getString("kcmc"));
			}
		} catch (SQLException e1) {
			e1.printStackTrace();
		}
		lj.closeConn();
		p2.add(ch);
		b1 = new JButton("确定");
		b1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				LianJie lj = new LianJie();
				String sql = "update xs set kcmc = '' where xm = '"+t1.getText()+"'";
				lj.Update(sql);
				frame.dispose();
			}
		});
		b2 = new JButton("取消");
		b2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				frame.dispose();
			}
		});
		p3.add(b1);
		p3.add(b2);
		p4.add(new JLabel("提示:  开课前每人限修改一次!"));
		
		frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
		frame.setResizable(false);
		frame.setVisible(true);
	}
}