This is Java programing. Add the programing to show the random letter of fruits on J panel . You need to print whether the answer is collect or not. The question is like R G E N A O, Then the answer is Orange. and Add the programing to show the time from the question show to a user answer.

This is the basic programing, Add the programing to this.

import java.awt.*;

import java.awt.event.*;

import java.util.*;

import java.util.Timer;

import javax.swing.*;

import java.io.File;

import java.io.IOException;

import java.awt.geom.Ellipse2D;

import javax.swing.JFrame;

import java.awt.Color;

import java.awt.Graphics;

import javax.swing.JPanel;

class ball {

private float x;

private float y;

private float diametar;

Color color;

private double xSpeed;

private double ySpeed;

ball(float x, float y, float diameter, Color color) {

this.x = x;

this.y = y;

this.diametar = diameter;

this.color = color;

}

void draw(Graphics g) {

Graphics2D g2d = (Graphics2D) g;

Ellipse2D.Double circle = new Ellipse2D.Double(getX() - getDiametar() / 2, getY() - getDiametar() / 2, getDiametar(), getDiametar());

g2d.fill(circle);

}

void move() {

setX((float) (getX() + getxSpeed()));

if (getX() - getDiametar() / 2 < 0) {

setX(getDiametar() / 2);

setxSpeed(-getxSpeed());

} else if (getX() + getDiametar() / 2 > 390) {

setxSpeed(-getxSpeed());

}

setY((float) (getY() + getySpeed()));

if (getY() - getDiametar() / 2 < 0) {

setySpeed(-getySpeed());

} else if (getY() + getDiametar() / 2 > 360) {

setY(360 - getDiametar() / 2);

setySpeed(-getySpeed());

}

}

double getxSpeed() {

return xSpeed;

}

void setxSpeed(double xSpeed) {

this.xSpeed = xSpeed;

}

double getySpeed() {

return ySpeed;

}

void setySpeed(double ySpeed) {

this.ySpeed = ySpeed;

}

float getX() {

return x;

}

void setX(float x) {

this.x = x;

}

float getY() {

return y;

}

void setY(float y) {

this.y = y;

}

float getDiametar() {

return diametar;

}

void setDiametar(float diameter) {

this.diametar = diameter;

}

public void color(Color blue) {

// TODO Auto-generated method stub

}

}

class words{

String word; // single chracter

int x;

int y;

int r;

int g;

int b;

int dx;

int dy;

}

class myframe extends JFrame

{

Container c;

JPanel panel;

JButton addbutton, startbutton;

JLabel catagory, ballsize;

JTextField guess;

JComboBox cb;

buttonListener handle;

myDrawboard myboard;

JFrame mainFrame;

public myframe()

{

super("Your title");

c = getContentPane();

guess = new JTextField(7);

guess.setFont(new Font("SansSerif", Font.BOLD, 50));

guess.setText("");

guess.addActionListener(new ActionListener(){

Random rnd = new Random();

public void actionPerformed(ActionEvent e){

//enter-key pressed

myboard.addChar(cb.getSelectedItem().toString());

// checkAnswer();

guess.setText("");

}});

catagory = new JLabel("Catagory");

startbutton = new JButton("Start");

startbutton.setFont(new Font("SansSerif", Font.BOLD, 30));

startbutton.setPreferredSize(new Dimension(120, 60));

cb = new JComboBox();

cb.addItem("Fruit");

handle = new buttonListener();

startbutton.addActionListener(handle);

panel = new JPanel();

panel.add(guess);

panel.add(catagory);

panel.add(cb);

panel.add(startbutton);

myboard = new myDrawboard();

c.add(myboard.panel, BorderLayout.CENTER);

c.add(panel, BorderLayout.SOUTH);

setSize(800, 600);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setVisible(true);

// update screen (refresh)

Timer timer = new Timer();

timer.schedule(new myTimer(), 0, 16);

myboard.addWords();

}

class myTimer extends TimerTask

{

@Override

public void run() {

repaint();

}

}

class buttonListener implements ActionListener {

public void actionPerformed(ActionEvent action)

{

if (action.getSource() == startbutton)

{

if (startbutton.getText().equals("Start")) {

startbutton.setText("End"); }

else

startbutton.setText("Start");

}

}

}

}

class myDrawboard

{

private static int count = 0;

Graphics2D g2;

MyPanel panel = new MyPanel();

public void addChar(String word)

{

panel.addChar(word);

}

public void addWords()

{

panel.addWords();

}

}

class MyPanel extends JPanel {

ArrayList myFruit = new ArrayList();

ArrayList myColor = new ArrayList();

ArrayList myBody = new ArrayList();

ArrayList myQuestion = new ArrayList();

// List myQuestion = new Arrays.asList();

public MyPanel()

{

setBackground(Color.BLACK);

}

public void addWords(){

myFruit.add("APPLE");

myFruit.add("BANANA");

myFruit.add("GRAPE");

myFruit.add("ORANGE");

myFruit.add("MANGO");

myFruit.add("BLUEBERRY");

myFruit.add("KIWI");

myFruit.add("PEACH");

myFruit.add("PAPAYA");

myFruit.add("RASBERRY");

myFruit.add("LEMON");

;

}

public void addChar(String catagory){

// ArrayList myQuestion = new ArrayList();

myQuestion.clear();

Random rnd = new Random();

int index;

String answer="";

switch (catagory) {

case "Fruit":

index= rnd.nextInt(myFruit.size());

answer = myFruit.get(index);

break;

}

List letter = Arrays.asList(answer);

Collections.shuffle(letter);

for (int i=0; i

myQuestion.add(letter.get(i));

}

}

public void paintComponent(Graphics g)

{

Graphics2D g2 = (Graphics2D) g;

g2.setColor(Color.white);

g2.fillRect(0,0,getWidth(), getHeight());

// x, y, width, height

int x=150;

int y=150;

for (int i = 0; i < myQuestion.size(); i++)

{

g2.setColor(Color.pink);

g2.setFont(new Font("SansSerif", Font.BOLD, 90));

g2.drawString(myQuestion.get(i),x,y);

}

}

}

class gui extends JPanel implements Runnable {

ball b1;

boolean going = true;

Thread animator;

ball b2;

double deltaX;

double deltaY;

double distance;

public gui() {

b1 = new ball(50, 80, 40, Color.white);

b1.setX(50);

b1.setY(80);

b1.setxSpeed(4);

b1.setySpeed(2);

;

b2 = new ball(50, 80, 70, Color.blue);

b2.setX(150);

b2.setY(80);

b2.setxSpeed(4);

b2.setySpeed(2);

animator = new Thread(this);

animator.start();

}

@Override

public void paintComponent(Graphics g) {

super.paintComponent(g);

b1.draw(g);

b2.draw(g);

g.setColor( Color.white );

// draw center of circle

g.fillOval((int) b1.getX() - 5, (int) b1.getY() - 5, 10, 10);

g.fillOval((int) b2.getX() - 5, (int) b2.getY() - 5, 10, 10);

}

@Override

public void run() {

while (going) {

b1.move();

b2.move();

checkCollision();

repaint();

try {

Thread.sleep(20);

} catch (InterruptedException ex) {

}

}

}

public void checkCollision() {

deltaX = Math.abs(b1.getX() - b2.getX());

deltaY = Math.abs(b1.getY() - b2.getY());

distance = deltaX * deltaX + deltaY * deltaY;

if (distance < (b1.getDiametar() / 2 + b2.getDiametar() / 2) * (b1.getDiametar() / 2 + b2.getDiametar() / 2)) {

double newxSpeed1 = (b1.getxSpeed() * (4 - 7) + (2 * 7 * b2.getxSpeed())) / 11;

double newxSpeed2 = (b2.getxSpeed() * (7 - 4) + (2 * 4 * b1.getxSpeed())) / 11;

double newySpeed1 = (b1.getySpeed() * (4 - 7) + (2 * 7 * b2.getySpeed())) / 11;

double newySpeed2 = (b2.getySpeed() * (7 - 4) + (2 * 4 * b1.getySpeed())) / 11;

b2.setxSpeed(newxSpeed2);

b2.setySpeed(newySpeed2);

b1.setxSpeed(newxSpeed1);

b1.setySpeed(newySpeed1);

}

}

}

public class HelloWorld {

public static void main(String[] args) {

myframe frame= new myframe();

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

gui balls = new gui ();

frame.add(balls);

frame.setVisible(true);

}

}