checi.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.*;
public class checi
{   int che,u,v;
    String pt[]=new String[30];
	Point pp[]=new Point[30]; 
	String ur1="jdbc:odbc:lv";
	String query[]=new String[30];
	ResultSet r[]=new ResultSet[30];
	int x,y,xx,yy,xxxx,yyyy;
	Thread 	newThread;
	public class(int m)
	{
		che=m;
	}
	public class luxian()
	{
	    try 
		{
			Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
			
		}
		catch(java.lang.ClassNotFoundException e)
		{
			System.err.print("classNotFoundException:");
			System.err.println(e.getMessage());
		}
		try
		{  Connection con=DriverManager.getConnection(ur1);
           Statement stmt=con.createStatement();
           Statement stmt1=con.createStatement();
          int i=0,j=0;
		  String query="SELECT * FROM "C0"WHERE 车次='"+che+"'";
		  ResultSet r=stmt.executeQuery(query);
		  while(r.next())
		  {
		  	pt[j]=r.getString("站点");
		  	j++;
		  }	
		  while(i<=j)
		  {
		  
		  
		  query[i]="SELECT * FROM "C00"WHERE 站点='"+pt[i]+"'";
		  r[i]=stmt.executeQuery(query[i]);
		  pp[i].x=r[i].getInt("x");
		  pp[i].y=r[i].getInt("y");
		  }
		 do
		 {	x=xx;y=yy;xx=pp[h].x;yy=pp[h].y;
		    
			sanjiao sj=new sanjiao(x,y,xx,yy);
			xxx=x;yyy=y;
			if(x==xx)
			{
				movex=0;xx++;
				movey=1;	
			while (kkk==0)
			{
			try{Thread.sleep(2);}catch(InterruptedException E){}				
			xxx=xxx+movex;
			yyy=yyy+movey;
			xxxx=(int)xxx;
			yyyy=(int)yyy;
			if(yyyy==y||yyyy==yy)kkk=1;
			bufg1.setColor(Color.blue);
			bufg1.fillOval(xxxx,yyyy,4,4);
			repaint();
			}
			}
			else
			{
		    kkk=0;
			movex=cd*sj.cos;
			movey=cd*sj.sin;
		
			while (((x<=xxx)&&(xxx<=xx))||((xx<=xxx)&&(xxx<=x)))
			{
			try{Thread.sleep(2);}catch(InterruptedException E){}				
			xxx=xxx+movex;
			yyy=yyy+movey;
			xxxx=(int)xxx;
			yyyy=(int)yyy;
			bufg1.setColor(Color.blue);
			bufg1.fillOval(xxxx,yyyy,4,4);
			repaint();
			}
			
			}	
	    	bufg1.setColor(Color.red);
			bufg1.drawString(""+pt[h-1],x,y);
			h++;
		
		}while(newThread!=null&&h<=zd);
		
		}
	}
}