buspanel1.java

一个用java语言编写的基于数据库的系统

import javax.swing.*;
import java.awt.*;
import java.awt.Color;
import javax.swing.border.*;
import java.awt.event.*;
public class BusPanel1 extends JPanel{
    private JButton jbcha=new JButton("查询");
    private JLabel jl1=new JLabel("车号");
    private JTextField jt1=new JTextField(10);
    private JScrollPane jScrollPane1 = new JScrollPane();
    public  JTextArea jl2=new JTextArea();//显示所经过的路线

    private JPanel jp1=new JPanel();
    private JPanel jp2=new JPanel();
    private JPanel jp3=new JPanel();
    private DataBase database=new DataBase();
    public BusPanel1(){
	   	jp1.setBorder(new TitledBorder("按车号查询"));
    	jp2.setBorder(new TitledBorder("经过的站点"));
    	jp1.setLayout(new GridLayout(1,3));
    	jp1.add(jl1);
    	jp1.add(jt1);
    	jp1.add(jbcha);
        jl2.setColumns(20);
        jl2.setRows(5);
        jl2.setBackground(jl1.getBackground());
		jl2.setLineWrap(true);
		jl2.setWrapStyleWord(true);
		jl2.setEditable(false);
		jl2.setFont(new Font("宋体",0,15));
		jScrollPane1.setViewportView(jl2);
        jp3.setLayout(new BorderLayout());
    	jp3.add(jp1,BorderLayout.NORTH);
    	jp3.add(jScrollPane1,BorderLayout.CENTER);
    	setLayout(new BorderLayout());
    	add(jp3,BorderLayout.CENTER);
    jbcha.addActionListener(new ActionListener(){
		public void actionPerformed(ActionEvent e){
			jl2.setText(database.query(jt1.getText().trim()));
			  }
			});
}
}