Wrong at line 122(Arrayindexoutofboundsexception)

gistfile1.java

package com.libgdxproject.firstproject;


import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.audio.Sound;
import com.badlogic.gdx.audio.Music;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.math.Rectangle;
import com.badlogic.gdx.math.Vector3;
import com.badlogic.gdx.utils.Array;
import com.badlogic.gdx.utils.TimeUtils;
import com.badlogic.gdx.Screen;
import org.w3c.dom.css.Rect;

import java.util.Iterator;

public class FirstProject implements Screen {
	final Drop game;
	private Texture dropImage;
	private Texture bucketImage;
	private Texture heartImage;
	private Sound dropSound;
	private Sound fallSound;
	private Sound loseSound;
	private Sound loseHeartSound;
	private Music rainMusic;
	private OrthographicCamera camera;
	private SpriteBatch batch;
	private Rectangle bucket;
	private Array<Rectangle> hearts;
	private Array<Rectangle> raindrops;
	private long lastDropTime;
	private int dropColleted=0,tong=0;

	public FirstProject(final Drop game) {
		this.game = game;

		raindrops = new Array<Rectangle>();
		SpawnRaindrop();

		bucket = new Rectangle();
	    	bucket.x = 800/2 - 60/2;
	    	bucket.y = 20;
	    	bucket.width = 60;
	    	bucket.height = 60;
		camera = new OrthographicCamera();
		camera.setToOrtho(false,800,400);
		batch = new SpriteBatch();

		dropImage = new Texture(Gdx.files.internal("droplet.png"));
		bucketImage = new Texture(Gdx.files.internal("bucket.png"));
		heartImage = new Texture(Gdx.files.internal("live.png"));

		dropSound = Gdx.audio.newSound(Gdx.files.internal("dropsound.wav"));
		rainMusic = Gdx.audio.newMusic(Gdx.files.internal("rainsound.mp3"));
		fallSound = Gdx.audio.newSound(Gdx.files.internal("fall.wav"));
		loseSound = Gdx.audio.newSound(Gdx.files.internal("loser.mp3"));
		loseHeartSound = Gdx.audio.newSound(Gdx.files.internal("heartlose.wav"));

		rainMusic.setLooping(true);
	}

	@Override
	public void render(float delta) {
		hearts = new Array<Rectangle>();

		Gdx.gl.glClearColor(0,0,0.2f,1);
		Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

		camera.update();
		game.batch.setProjectionMatrix(camera.combined);
		game.batch.begin();
		game.font.draw(game.batch,"Drop Collected :" + dropColleted,0,400);
		game.batch.draw(bucketImage,bucket.x,bucket.y,bucket.width,bucket.height);

		for (int i=760; i>=660; i-=50) {
			Rectangle heart = new Rectangle();
			heart.x = i;
			heart.y = 360;
			heart.width = 30;
			heart.height = 30;
			hearts.add(heart);
			game.batch.draw(heartImage, heart.x, heart.y, heart.width, heart.height);
		}

		for (Rectangle raindrop: raindrops) {
			game.batch.draw(dropImage,raindrop.x,raindrop.y);
		}
		game.batch.end();


		if (Gdx.input.isTouched()) {
			Vector3 touchPos = new Vector3();
			touchPos.set(Gdx.input.getX(),Gdx.input.getY(),0);
			camera.unproject(touchPos);
			bucket.x = touchPos.x - 60 / 2;
		}

		if (Gdx.input.isKeyPressed(Input.Keys.LEFT)) bucket.x -= 200 * Gdx.graphics.getDeltaTime();
		if (Gdx.input.isKeyPressed(Input.Keys.RIGHT)) bucket.y += 200 * Gdx.graphics.getDeltaTime();

		if (bucket.x < 0) bucket.x = 0;
		if (bucket.x > 800-60) bucket.x = 800-60;

		if (TimeUtils.nanoTime() -  lastDropTime > 1000000000) SpawnRaindrop();
		
		Iterator<Rectangle> iter = raindrops.iterator();
		Iterator<Rectangle> it = hearts.iterator();
 		while (iter.hasNext()) {
			Rectangle raindrop = iter.next();
			raindrop.y -= 200 * Gdx.graphics.getDeltaTime();
			if (raindrop.y + 60 < 0)  {
				iter.remove();
				fallSound.play();
				it.remove();
				loseHeartSound.play();
				if (!it.hasNext()) loseSound.play();
            }
			if (raindrop.overlaps(bucket)) {
				dropColleted++;
				dropSound.play();
				iter.remove();
			}
		}
	}

	private void SpawnRaindrop() {
		Rectangle raindrop = new Rectangle();
		raindrop.x = MathUtils.random(0,800-60);
		raindrop.y = 480;
		raindrop.width = 60;
		raindrop.height = 60;
		raindrops.add(raindrop);
		lastDropTime = TimeUtils.nanoTime();
 	}

 	@Override
	public void resize(int width,int height) {

	}

	@Override
	public void show() {
		rainMusic.play();
	}


 	@Override
	public void dispose() {
    		dropImage.dispose();
    		bucketImage.dispose();
    		dropSound.dispose();
    		rainMusic.dispose();
    		fallSound.dispose();
	}

	@Override
	public void pause() {

	}
	@Override
	public void resume() {

	}

	@Override
	public void hide() {

	}
}