I am trying to create a sort of photoBooth In Processing

import processing.video.*;//opens up processing libraries


int s;// saved time

int t = 5000;// 5 seconds

//class
Capture video;//class for cideo

Button[] button = new Button[4];//class will be called button


PImage img;//class img

boolean state; // keyPressed
//===================================
void setup() {
  size(1500, 1098);
  background(0);

  img = loadImage("Octoton Background Big.jpg"); //image file name
  frameRate(30);
  imageMode(CENTER);
  //Inititialize class
  for (int i = 0; i< button.length; i++) {
    button[i] = new Button(250+(i*75), 250);
  }

  button[0].setColor(0, 255, 0);//green
  button[1].setColor(0, 0, 255);//blue
  button[2].setColor(255, 255, 0);//yellow
  button[3].setColor(142, 56, 142);//purple

  video = new Capture (this, 640, 480, 30);//(video, width, height, frameRate)
  video.start();

  s = millis(); //sets s to millis
  ellipseMode(CENTER);
}
//======================END SETUP===================



void draw () {

  if (keyPressed) {
    if (keyCode == UP) {
      image(img, width/2, height/2);// background drawn 
      //for (int i = 0; i< button.length; i++) {
      button[0].display(true);
      state = true;
    }
  }
  else {
    image(img, width/2, height/2); // background drawn 
    //for (int i = 0; i< button.length; i++) {
    button[0].display(false);//button deafault displayed
  }
  if (video.available()) {// if there is something to see it will be available
    video.read();// read what is available
  }   
  image(video, width/2, height/2+100);

  if (keyPressed) {
    if (keyCode == DOWN) {
      image(img, width/2, height/2);// background drawn 
      //for (int i = 0; i< button.length; i++) {
      button[1].display(true);
      state = true;
    }
  }
  else {
    image(img, width/2, height/2); // background drawn 
    //for (int i = 0; i< button.length; i++) {
    button[1].display(false);//button deafault displayed
  }
  if (video.available()) {// if there is something to see it will be available
    video.read();// read what is available
  }   
  image(video, width/2, height/2+100);
  if (keyPressed) {
    if (keyCode == LEFT) {
      image(img, width/2, height/2);// background drawn 
      //for (int i = 0; i< button.length; i++) {
      button[2].display(true);
      state = true;
    }
  }
  else {
    image(img, width/2, height/2); // background drawn 
    //for (int i = 0; i< button.length; i++) {
    button[2].display(false);//button deafault displayed
  }
  if (video.available()) {// if there is something to see it will be available
    video.read();// read what is available
  }   
  image(video, width/2, height/2+100);
  if (keyPressed) {
    if (keyCode == RIGHT) {
      image(img, width/2, height/2);// background drawn 
      //for (int i = 0; i< button.length; i++) {
      button[3].display(true);
      state = true;
    }
  }
  else {
    image(img, width/2, height/2); // background drawn 
    //for (int i = 0; i< button.length; i++) {
    button[3].display(false);//button deafault displayed
  }
  if (video.available()) {// if there is something to see it will be available
    video.read();// read what is available
  }   
  image(video, width/2, height/2+100);
}
//=======================CLASS=================
class Button {
  color col; // color variable
  int x;
  int y;

  Button(int tempX, int tempY) { // constructor
  x = tempX;
  y = tempY;
  }


  void display(boolean tempState) {


    fill(155);//gray

    ellipse(x, 258, 60, 30); // Base of button

    if (tempState == true) {
      Pressed();
    }
    else {
      notPressed();
    }
  }

  //=======================notPressed=================
  void notPressed () {
    //Button Default

    fill(col);//color set 

    ellipse(x, 254, 50, 20);
    ellipse(x, 253, 50, 20);
    ellipse(x, 252, 50, 20);
    ellipse(x, 251, 50, 20);
    ellipse(x, 250, 50, 20);
    ellipse(x, 249, 50, 20);

    ellipse(x, 248, 50, 20);
    ellipse(x, 247, 50, 20);
    ellipse(x, 246, 50, 20);
    ellipse(x, 245, 50, 20);
  }


  //=======================Pressed=================
  void Pressed() {
    // Button Pressed

      fill(col);//color set

    ellipse(x, 254, 50, 20);
    ellipse(x, 253, 50, 20);
    ellipse(x, 252, 50, 20);
    ellipse(x, 251, 50, 20);
    ellipse(x, 250, 50, 20);
  }

  //=======================setColor=================
  void setColor(int tempR, int tempG, int tempB) {
    col = color(tempR, tempG, tempB);
  }
}