Таймер для выполнения анимации

Сделал анимацию. Нужен таймер, в конце в последнем методе он выводит просто время выполнения анимации. Как сделать что код выполнялся в тичении 5 секунд? Столько времени я укажу на работу анимации, столько что б и выполнялось. Буду очень признателен всем кто подскажет!

import acm.graphics.GLabel;
import acm.graphics.GOval;
import acm.graphics.GRect;
import com.shpp.cs.a.graphics.WindowProgram;
import java.awt.*;

/** A class that performs an agrographic animation for 5 seconds. */
    public class Assignment3Part6 extends WindowProgram {
/** Constants that specify the size of the window. */
public static final int APPLICATION_WIDTH = 500;
public static final int APPLICATION_HEIGHT = 500;
/** Constanta, sets the execution time of the animation. */
private static final int TIMER_RATE = 4;
/** The number of pixels to shift the label on each cycle */
private static final double DELTA_X = 2.0;
/** The number of milliseconds to pause on each cycle */
private static final int PAUSE_TIME_TEXT = 3;
/** The string to use as the value of the label */
private static final String HEADLINE = "~ FINISH ~";
/** The size of the ball. */
private static final double BALL_SIZE = 50;
/** The size of the rectangle. */
private static final double SIZE_X = 100;
private static final double SIZE_Y = 20;
/** The amount of time to pause between frames (48fps). */
private static final double PAUSE_TIME = 600.0 / 48;
/** The initial horizontal velocity of the ball. */
private static final double HORIZONTAL_VELOCITY = 1.0;
/** Gravitational acceleration. */
private static final double GRAVITY = 0.425;
/** Elasticity. */
private static final double ELASTICITY = 0.7;
/** Color for the oval*/
private static final Color crimson = new Color (170, 0,80);
public void run() {
    startAnimation();
}
/** Creates a ball that can be bounced, placing it in the upper-left 
    corner
    of the screen.
    @return A ball that can be bounced. */
private GOval makeBall() {
    GOval ball = new GOval(32, 0, BALL_SIZE, BALL_SIZE);
    ball.setFillColor(crimson);
    ball.setFilled(true);
    return ball;
}
/** Simulates a bouncing ball.
    @param ball The ball to bounce. */
private void bounceBall(GOval ball) {
    /** Keep track of speed down (dy is short for "delta-y.") */
    double dy = 0;
    /** This is repeated forever. Maybe we should change it to assign 
        when
        gently quote on the right side of the screen! */
    /** The variable is used to extend the number of iterations at 
        each step in the animation. */
    int count = 0;
    while (count++ < 75) {
        /** Move the ball to the current speed. */
        ball.move(HORIZONTAL_VELOCITY, dy);
        /** Gravity extends downward, increasing the acceleration 
            downward. */
        dy += GRAVITY;
        /** If the ball falls under the floor, we return it. IS a 
            difficult case
            to pay attention to - if the ball is already scored 
            floor, we do not return it. */
        if (ballBelowFloor(ball) && dy > 0 ) {
            dy *= -ELASTICITY;
        }
        pause(PAUSE_TIME);
    }
    count = 75;
    while(count++ < 175){
        ball.move(HORIZONTAL_VELOCITY, dy);
        dy += GRAVITY;
        if(ballBelowFloorTwo(ball) && dy > 0){
            dy *= -ELASTICITY;
        }
        pause(PAUSE_TIME);
    }
    count = 175;
    while(count++ < 275){
        ball.move(HORIZONTAL_VELOCITY, dy);
        dy += GRAVITY;
        if(ballBelowFloorThree(ball) && dy > 0){
            dy *= -ELASTICITY;
        }
        pause(PAUSE_TIME);
    }
    while(true){
        ball.move(HORIZONTAL_VELOCITY, dy);
        dy += GRAVITY;
        if(ballBelowFloorFour(ball) && dy > 0){
            break;
        }
        pause(PAUSE_TIME);
    }
}
/**
 * Determines whether the ball has dropped below floor level.
 * @param ball The ball to test.
 * @return Whether it's fallen below the floor.
 */
private boolean ballBelowFloor(GOval ball) {
    return ball.getY() + ball.getHeight() >= 100;
}
private boolean ballBelowFloorTwo(GOval ball) {
    return ball.getY() + ball.getHeight() >= 200;
}
private boolean ballBelowFloorThree(GOval ball) {
    return ball.getY() + ball.getHeight() >= 300;
}
private boolean ballBelowFloorFour(GOval ball) {
    return ball.getY() + ball.getHeight() >= 400;
}
/** Post the text at the end of the animation. */
private void text(){
    GLabel label = new GLabel(HEADLINE);
    label.setColor(Color.BLUE);
    label.setFont("Algerian-40");
    add(label, APPLICATION_WIDTH, 450);
    while (label.getX() + APPLICATION_WIDTH > 200) {
        label.move(-DELTA_X, 0);
        pause(PAUSE_TIME_TEXT);
    }
}
/** Creating graphic figures in the form of an obstacle. */
private GRect rect (){
    GRect rect = new GRect(10, 100,SIZE_X,SIZE_Y);
    rect.setFilled(true);
    rect.setFillColor(Color.ORANGE);
    return rect;
}
private GRect rectTwo(){
    GRect rectTwo = new GRect(110, 200, SIZE_X, SIZE_Y);
    rectTwo.setFillColor(Color.ORANGE);
    rectTwo.setFilled(true);
    return rectTwo;
}
private GRect rectThree(){
    GRect rectThree = new GRect(220, 300, SIZE_X, SIZE_Y);
    rectThree.setFillColor(Color.ORANGE);
    rectThree.setFilled(true);
    return rectThree;
}
private GRect rectFinish1(){
    GRect rect1 = new GRect(310, 400, SIZE_X, SIZE_Y);
    rect1.setFillColor(Color.green);
    rect1.setFilled(true);
    return rect1;
}
private GRect rectFinish2(){
    GRect rect2 = new GRect(310, 380, 20, 40);
    rect2.setFillColor(Color.green);
    rect2.setFilled(true);
    return rect2;
}
private GRect rectFinish3(){
    GRect rect3 = new GRect(400, 320, 20, 100);
    rect3.setFillColor(Color.green);
    rect3.setFilled(true);
    return rect3;
}
/** Placing all figures in one method. */
private void addFigureIsRectangle(){
    GRect rect = rect();
    add(rect);
    GRect rectTwo = rectTwo();
    add(rectTwo);
    GRect rectThree = rectThree();
    add(rectThree);
    GRect rectFinish1 = rectFinish1();
    add(rectFinish1);
    GRect rectFinish2 = rectFinish2();
    add(rectFinish2);
    GRect rectFinish3 = rectFinish3();
    add(rectFinish3);
}
/** Timer for animation. */
private void startAnimation(){
    long start = System.currentTimeMillis();
    addFigureIsRectangle();
    GOval ball = makeBall();
    add(ball);
    bounceBall(ball);
    text();
    long end = System.currentTimeMillis();
    long elapsed = end - start;
    long seconds = elapsed / 1000;
    println(seconds);
}
}