写的一个图形界面的管理系统

[java]代码库

package com.wybu.cn;
/**
 * 管理界面设计
 */
import javax.swing.*;

import java.awt.BorderLayout;
import java.awt.event.*;
import java.util.Arrays;
import java.util.Vector;
import java.sql.*;
public class StuduntManagerDemo extends JFrame implements ActionListener{
	
	JTable jt;
	JScrollPane jsp;
	JPanel jp1,jp2,jp3;
	JButton jb1,jb2,jb3,jb4;
	JLabel jl;
	JTextField jtf;
	MyModelDemo ms;
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new StuduntManagerDemo();
		System.out.println("dant ");
	}
    public StuduntManagerDemo() {
    	//处理中间的ScorllPanel
		System.out.println("开始");
		 ms=new MyModelDemo();
		jt=new JTable(ms);	
		//jt.setModel(ms);
		jsp=new JScrollPane(jt);
		//处理北部
		jp1=new JPanel();
		jl=new JLabel("请输入你要查询的姓名:");
		jtf=new JTextField(10);
		jb1=new JButton("查询");
		jb1.addActionListener(this);
		jp1.add(jl);
		jp1.add(jtf);
		jp1.add(jb1);
		//处理南部
		
		jp2=new JPanel();
		jb2=new JButton("添加");
		jb2.addActionListener(this);
		jb3=new JButton("修改");
		jb3.addActionListener(this);
		jb4=new JButton("删除");
		jb4.addActionListener(this);
		jp2.add(jb2);
		jp2.add(jb3);
		jp2.add(jb4);
		
		this.add(jp1,new BorderLayout().NORTH);
		this.add(jsp);
		this.add(jp2,new BorderLayout().SOUTH);
		this.setSize(400, 300);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setVisible(true);
	}
	@Override
	public void actionPerformed(ActionEvent e) {
		if(e.getSource()==jb1){
			String str=this.jtf.getText();
			ms=new MyModelDemo(str);
			this.jt.setModel(ms);
				System.out.println("查询成功");
		}else if(e.getSource()==jb2){
			 DialogDemo dd=new DialogDemo(this,"添加组件", true);
			 ms=new MyModelDemo();
				this.jt.setModel(ms);
		}else if(e.getSource()==jb3){
			int rownum=this.jt.getSelectedRow();
			if(rownum==-1){
				JOptionPane.showConfirmDialog(this, "请选定一行");
			}else{
			ms=new MyModelDemo();
			new Dialog1Demo(this, "修改信息",true,rownum,ms);
			 ms=new MyModelDemo();
				this.jt.setModel(ms);
			System.out.println(rownum);}
		}else if(e.getSource()==jb4){
			int i=this.jt.getSelectedRow();
			if(i==-1){
				JOptionPane.showConfirmDialog(this, "请选定一行");
			}else{
				ms=new MyModelDemo();
				new deleteStudentDemo(i,ms);
				ms=new MyModelDemo();
				this.jt.setModel(ms);
			}
		}
	}
}