How can i make this game to be over in 3 minutes?

Question

i'm really a total beginner, and this is the race game code for my school assignment.
How can i possibly make this game to be over in 3 minutes?
It says "game over" when you hit 20 cars.
I want to make it say "you've made it!" or something when they survive for 3 minutes with less than 20 crashes.
please help! T.T
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.Timer;
public class BugRace extends Applet implements KeyListener, Runnable{
  Image buff;
  Canvas Panel;
  Graphics2D gPanel;
  Graphics2D gBuffer;
  Bug redBug;
  Bug[] rivals=new Bug[20];
  Button StartButton;
  //Button StopButton;
  Thread game;
  Timer time;
  private boolean loop=true;
  Dimension dim=new Dimension(200, 300);
  private int road;
  Random rnd=new Random();
  private int crash = 0;
  public void init(){     
    prepareResource();
    setBackground(Color.gray);
    setSize(400,400);
    initPanel();
    add(Panel);
    // Start Button
    StartButton=new Button("START");
    add(StartButton);
    StartButton.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent ae){
        // request focus for Panel to get key event
        Panel.requestFocus();
        if(!game.isAlive()){
             game.start();}else if(game.isAlive()){
             game.start();}
    /*StopButton=new Button("STOP");
    add(StopButton);
    //StopButton.addActionListener(new ActionListener(){
     public void actionPerformed(ActionEvent ae){
        //Panel.requestFocus();
          if(game.isAlive())
               game.stop();}
  public void prepareResource(){ //load bug images
    Image imgRed=getImage(getCodeBase(),"redbug.gif");
    Image imgBlue=getImage(getCodeBase(),"bluebug.gif");
    Image imgYellow=getImage(getCodeBase(),"yellowbug.gif");
    Image imgPurple=getImage(getCodeBase(),"purplebug.gif");
    MediaTracker mt=new MediaTracker(this);
    try{
      mt.addImage(imgRed, 0);
      mt.addImage(imgBlue, 1);
      mt.addImage(imgYellow, 2);
      mt.addImage(imgPurple, 3);
      mt.waitForAll();
    }catch(Exception e){}
    buff=createImage((int)dim.getWidth(), (int)dim.getHeight());
    gBuffer=(Graphics2D)buff.getGraphics();
    redBug=new Bug(imgRed, 80,250, dim);  // user's bug
    for(int i=0;i<10;i++){
       rivals=new Bug(imgBlue, 0, 0); // rival blue bug
for(int i=5;i<rivals.length;i++){
rivals[i]=new Bug(imgYellow, 0, 0); // rival yellow bug
for(int i=10;i<rivals.length;i++){
rivals[i]=new Bug(imgPurple, 0, 0); // rival purple bug
for(int i=0;i<rivals.length;i++){  // set locations for rival bugs
setrivals(i);
game=new Thread(this); // game thread for controlling
public void stop(){
loop=false; // stop the thread
public void run(){
while(loop){
drawPanel(); // draw game screen
try{ Thread.sleep(50);}catch(Exception e){}
public void initPanel(){    // initialize the panel
Panel=new Canvas(){
public void paint(Graphics g){
if(gPanel==null){
     gPanel=(Graphics2D)Panel.getGraphics();
drawPanel();
Panel.setSize(dim); // size of the panel
Panel.addKeyListener(this); //add keylistener for the game
// set rival bugs' location randomly, and make them not intersect each other
void setrivals(int en){ 
int x, y;
next:while(true){
x=rnd.nextInt((int)dim.getWidth()-rivals[en].getWidth());
y=-rnd.nextInt(5000)-200;
// if (x,y) intersect to each other, go to next
for(int j=0;j<rivals.length;j++){
if(j!=en && rivals[j].collision(x, y))continue next;
// set (x, y) as en rival bug's location and exit from while loop.
rivals[en].setLocation(x, y);
break;
void check(Bug en){       // check if bugs collides
if(redBug.collision(en)){        // if collide,
if(redBug.getX()>en.getX()){  // if rival bug is on the left side from user's,            
en.move(-10, 0); // move rival bug in 10 to the left
redBug.move(10, 0); // move user's bug in 10 to the right
crash++;          //add # of crash
else{                     // if rival bug is on the right side from user's,
en.move(10,0); // move rival bug in 10 to the right
redBug.move(-10, 0); // move user's bug in 10 to the left
crash++;          //add # of crash
synchronized void drawPanel(){                        // draw panel
gBuffer.clearRect(0, 0, (int)dim.getWidth(), (int)dim.getHeight()); //clear buffer
gBuffer.setPaint(new Color(0, 150, 0));          //fill background in green
gBuffer.fillRect(0, 0, (int)dim.getWidth(), (int)dim.getHeight());
drawRoad(); // draw the road
// draw rival bugs moving down
for(int i=0;i<rivals.length;i++){
rivals[i].move(0, 15); // move rival bugs down
rivals[i].draw(gBuffer, Panel); // draw the bugs in panel
if(rivals[i].getY()>dim.getHeight()){ //if a rival bug is out of panel
     setrivals(i);} // set it at initial position
          check(rivals[i]); // check if they intersect
redBug.draw(gBuffer, Panel); // draw user's bug
gPanel.drawImage(buff, 0,0, Panel); // draw buffer in panel
if(crash<20){
     gPanel.setFont(new Font(null,Font.BOLD,15));
     gPanel.drawString("crash:"+crash,30, 30);}
else{
     gPanel.setFont(new Font(null,Font.BOLD,15));
     gPanel.drawString("crash:"+crash,30, 30);
     gPanel.setFont(new Font(null,Font.BOLD,20));
     gPanel.drawString("Game Over", 50, 100);
          gPanel.dispose();
void drawRoad(){ // draw yellow center line
road+=80;
gBuffer.setPaint(Color.yellow);
gBuffer.fillRect((int)dim.getWidth()/2, road,10,150);
if(road>=dim.getHeight()){ //if the line goes lower than  panel
     road=-150;                    //move it up again
}else if(crash >20){
     road=0;
public void keyPressed(KeyEvent ke){       
if(ke.getKeyCode()==KeyEvent.VK_LEFT){     // if left arrow is pressed,
redBug.move(-20,0); // the bug moves to the left
else if(ke.getKeyCode()==KeyEvent.VK_RIGHT){  // if right arrow is pressed
redBug.move(20,0); // the bug moves to the right
public void keyReleased(KeyEvent ke){}
public void keyTyped(KeyEvent ke){}

Answer 1

import java.util.Timer;
import java.util.TimerTask;
public class Test {
    public static void main (String[] args) {
        final Timer timer = new Timer ();
        System.out.println ("I'm gonna do something in 5 seconds.");
        timer.schedule (new TimerTask () {
            public void run () {
                System.out.println ("Time's up !");
                timer.cancel ();
        }, 5000);
}if you want to display the time left it's better to make your own Thread that updates a "timeleft variable:
{code}
public class Test {
//set the time Left to 3 mins.
private long secondsLeft = 3 * 60;
public Test () {
new Thread (new Runnable () {
public void run () {
try {
while (secondsLeft > 0) {
//Let's update the timer every second.
Thread.sleep (1000);
secondsLeft = secondsLeft - 1;
System.out.println ("Time left: " + (secondsLeft / 60) + ":" + (secondsLeft % 60));
System.out.println ("Grats !");
} catch (InterruptedException e) {}
}).start ();
public static void main (String[] args) {
new Test ();
{code}