mybtn1.java

java写的一交通导航程序点击任意两站点就可以以可视化的方式将转车次数最少的乘车方案找出来 注：连ACCESS数据库 odbc数据源名称为lv

import java.awt.*;
import java.applet.Applet;
import java.sql.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
import java.lang.String;
import java.lang.Math.*;

class mybtn1 extends JPanel{
	Button zoomout;
	Button zoomin;
	
	float bl=1.1f;
	mybtn1(){
	zoomout=new Button("放大");
	zoomin=new Button("缩小");
	add(zoomout);
	add(zoomin);
	//pack();
	zoomout.addActionListener(new ActionListener(){
				public void actionPerformed(ActionEvent e){
					draw1.pd1=1.1f;
					draw1.pd=1;
					draw1.myself.repaint();   //static JPanel myself;
				}
				});
	zoomin.addActionListener(new ActionListener(){
				public void actionPerformed(ActionEvent e){
					
				    draw1.pd1=0.9f;
				    draw1.pd=1;
					draw1.myself.repaint();
				}
				});
	}
}