import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
public class Road extends JPanel
 {
 	private Car car1;//only one car on system
	private Timer t;//motion
	private Graphics myBuffer;//graphics
 	public Road()
	{
 	 car1= new Car(0,440);//create car in second lane
    t = new Timer(10000, new Listener());//begin motion
    t.start();
	}
  public void paintComponent(Graphics g)
   {
    g.setColor(Color.green);
    g.fillRect(0,0, 1250, 900);//create background
    g.setColor(Color.black);
    g.fillRect(0,425,1250,50);//create Route 1
	 g.fillRect(50,0,25,425);//create side road
	 g.fillRect(225,0,25,425);//create side road
	 g.fillRect(305,475,25,425);//create side road
	 g.fillRect(645,475,25,425);//create side road
	 g.fillRect(1025,0,25,425);//create side road
	 g.fillRect(1205,0,25,900);//create side road
	 g.setColor(Color.white);
	 for(int x=0;x<=1250;x+=10)
	 	g.drawLine(x,438,x+5,438);//create lane 1
	 for(int x=0;x<=1250;x+=10)
	 	g.drawLine(x,450,x+5,450);//create lane 2
	 for(int x=0;x<=1250;x+=10)
	 	g.drawLine(x,462,x+5,462);//create lane 3
	 car1.draw(g);//put car into system	 	
   }
 private class Listener implements ActionListener
   {
     public void actionPerformed(ActionEvent e)
     {
       car1.move();//have car drive
		 if(car1.getX()==150)
		 	car1.changeLaneUp();//change lane up
		 if(car1.getX()==225)
		 	{
				car1.turn();//car turns left
				car1.move();//and continues down side road
     		}	  
	    repaint();
     }
   }
 }
 
 
 
 
 import java.awt.*;
 public class Car
{
 private int dx;      
 private int dy;
 private int myL;
 private int myW;
 private int myX;
 private int myY;
  // constructor
 public Car(int x,int y)
  {
  	myL=10;//length of car
	myW=8;//width of cat
	myX=x;//x position of car
	myY=y;//y position of car
   dx = 5; // vertically
  	dy = 12;// sideways
  }
  //modifier methods 
 public void setX(int x)        
  {
   myX = x;
  }
 public void setY(int y)
  {
   myY = y;
  }
 public void setdx(int x)
  {
   dx=x;
  }
 public void setdy(int y)
  {
   dy=y;
  } 
 public void setW(int w)
  {
   myW=w;
  }
 public void setL(int l)
  {
   myL=l;
  }   
  //accessor methods
 public int getX()             
  {
   return myX;
  }
 public int getY()
  {
   return myY;
  } 
 public int getL()
  {
   return myL;
  }
 public int getW()
  {
   return myW;
  }
 public int getdx()
  {
   return dx;
  }
 public int getdy()
  {
   return dy;
  }    
  //instance methods
 public void move()
  {
  	if(getL()>getW())//if pointing down route 1
	 setX(getX()+dx);//move in x direction
	else
	 setY(getY()-dy);	//if pointing down side road
	 						//move in y direction
  }
 public void changeLaneUp()
  {
 	setY(getY()-dy);//change y up
	setX(getX()+dx);//and move forward
  }
 public void changeLaneDown()
  {
   setY(getY()+dy);//change y down 
	setX(getX()+dx);//and move forward
  }
 public void turn()
  {
   int temp=getL();//switch length and width
   setL(getW());//so that the car appears to
	setW(temp);// be facing new direction
  }	
 public void draw(Graphics myBuffer)
  {
   myBuffer.setColor(Color.red);//create red cars to correct specification
   myBuffer.fillRect(getX(),getY(),getL(),getW());
  }
}