Hi so I have tried to put a condition for the program to produce a different result if a certain text did not match what was in the array. This technically works however because processing cannot find the file extension, it crashes my program every time. I wanted to see if there was a way to bypass this. This is my code below for the Processing language.

import controlP5.*;
import gifAnimation.*;
ControlP5 cp5;

String textValue = "";
String typing = "";

Gif loopingGif;

PImage img;
PImage imgbg;
boolean PictureofPlanetcheck = true;

String[] planets = {"earth", "venus", "jupiter", "uranus", "saturn", "neptune", "mercury", "mars", "pluto"};
String filetype =".jpg";

void setup() {
  size(480,270);
  loopingGif = new Gif(this, "Star-background.gif");
  loopingGif.loop();
  PFont font = createFont("arial",20);
  
  cp5 = new ControlP5(this);
                 
  cp5.addTextfield("textValue")
     .setPosition(80,120)
     .setSize(200,40)
     .setFont(createFont("arial",20))
     .setAutoClear(false)
     ;
       
  cp5.addBang("clear")
     .setPosition(300,120)
     .setSize(80,40)
     .getCaptionLabel().align(ControlP5.CENTER, ControlP5.CENTER)
     ;    
     
  textFont(font);
  
 
}

void draw() {
  image(loopingGif, 0, height / 2 - loopingGif.height / 2); 
  text(textValue, 360,180);
  
  String legend1 = "S to show text box and H to hide text box ";
  String legend2 = "Enter the name of a planet in the text box";
  fill(#FFFFFF);
  text(legend1, 60, 30);
  text(legend2, 60, 90);
  
  if (!textValue.equals ("")) {
     evaluateAnswer();
  }
  else
  {
    text(typing, 50, 100);
  }
}

public void clear() {
  //String picture = textValue + filetype;
  cp5.get(Textfield.class,"textValue").clear();
  background(loopingGif);
}

void controlEvent(ControlEvent theEvent) {
  if(theEvent.isAssignableFrom(Textfield.class)) {
    println("controlEvent: accessing a string from controller '"
            +theEvent.getName()+"': "
            +theEvent.getStringValue()
            );
  }
}


public void input(String theText) {
  // automatically receives results from controller input
  println("a textfield event for controller 'input' : "+theText);
}

void keyPressed() {
  if (key == 's' || key == 'S') {
  cp5.show();
  } else if (key == 'h' || key == 'H') {
    cp5.hide();
  }
}

void evaluateAnswer() {

String[] planets = new String[7];
  for (int i = 0; i < planets.length; i++) {
     textValue.equals(planets[i]);  
     String picture = textValue + filetype;
     PictureofPlanetcheck = true;
     img = loadImage(picture);
      
      if (textValue.equals(planets[i]) == false);
  
     PictureofPlanetcheck = false;  
     println("Please enter the name of a planet");
     
      background(loopingGif);
     img.resize(100,100);
     imageMode(CENTER);
     image(img, 200, 70);
     
     
     
    
  }
  
//for (int i = 0; i < planets.length; i++) {
//    if (textValue.equals(planets[i]) == false);
  
//     String message = "Please enter the name of a planet";
//     println(message);

// }

}

Due to this line of code: String picture = textValue + filetype; it looks for the text written and then a filetype .jpg This as a result makes Processing look for an image all the time.

Would love to know if there is a way to fix this!

Thanks in advance