title: Java Array not removing or updating entry from array
body: <p>I wrote a java program that allows a user to input automobile data into an array. They also have the option to update that data or remove it, only those 2 functions are not working. I have been struggling with this for some time now, any help is greatly appreciated. At the end I also try to write all the data to a txt file, which I believe is working ok.</p>
  
  <p>Thank you again for any help you can provide!</p>
  
  <pre><code>package portfolio_johnhuber;
  import java.io.FileWriter;
  import java.io.PrintWriter;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Scanner;
  
  
  public class Automobile {
  
  private String make;
  private String model;
  private String color;
  private int year;
  private int mileage;
  
  //Here we will create a new automobile
  public Automobile(String make, String model, String color, int year, int 
  mileage){
      this.make = make;
      this.model = model;
      this.color = color;
      this.year = year;
      this.mileage = mileage;
  }
  //Here we create access to the make property
  public String getMake(){
      return make;
  }
  //Here we create access to the model property
  public String getModel(){
      return model;
  }
  ////Here we create access to the color property
  public String getColor(){
      return color;
  }
  //Here we create access to the year property
  public int getyear(){
      return year;
  }
  //Here we create access to the mileage property
  public int getMileage(){
      return mileage;
  }
  //Here we need to update the make property
  public void setMake(String make){
      this.make = make;
  }
  //Here we need to update the model property
  public void setModel(String model){
      this.model = model;
  }
  //Here we need to update the color property
  public void setColor(String color){
      this.color = color;
  }
  //Here we need to update the year property
  public void setYear(int year){
      this.year = year;
  }
  //Here we need to update the mileage property
  public void setMileage(int mileage){
      this.mileage = mileage;
  }
  //Not sure if this will work, String for printing as text
  @Override
  public String toString(){
      return "Automobile(" + "make=" + make + ", model=" + model + ", color=" 
  + color + ", year=" + year + ",mileage=" + mileage +'}';
  }
  //this is where the program hopefully manages the automobiles
  public static void main(String[] args) throws Exception{
      List&lt;Automobile&gt; autos = new ArrayList&lt;&gt;();
      Scanner in = new Scanner (System.in);
  
      //Menu is displayed for user
      while (true){
          System.out.println("Welcome to the vehicle inventory program, please 
  make your selection");
          System.out.println("1. Add a vehicle");
          System.out.println("2. Remove a vehicle");
          System.out.println("3. Update a vehicle");
          System.out.println("0. Exit");
  
      //Option selection
      System.out.println("Option: ");
      int option = Integer.parseInt(in.nextLine());
      //Process user selected option
      if (option == 1){
          //Add new vehicle option
          System.out.println("Make: ");
          String make = in.nextLine();
  
          System.out.println("Model: ");
          String model = in.nextLine();
  
          System.out.println("Color: ");
          String color = in.nextLine();
  
          System.out.println("Year: ");
          int year = Integer.parseInt(in.nextLine());
  
          System.out.println("Mileage: ");
          int mileage = Integer.parseInt(in.nextLine());
  
          Automobile auto = new Automobile
       (make, model, color, year, mileage);
          autos.add(auto);
          System.out.println("Vehicle added!");
      }
      else if (option == 2 || option == 3){
          //user can select vehicle
          System.out.println("Please select a vehicle");
  
          for (int i = 0; i &lt; autos.size(); i++){
              System.out.println(i + " - " + autos.get(i));
          }
          System.out.print("Option: ");
          option = Integer.parseInt(in.nextLine());
  
          if (option &lt; 0 || option &gt;= autos.size()){
              //confirm selected vehicle
              System.out.println("Invalid Selection");
          } 
          else if (option == 2){
              //delete the selected vehicle
              Automobile auto = autos.remove(option);
              System.out.println("Removed - " + auto);
          }
          else if (option == 3){
              //update the selected vehcile
              Automobile auto = autos.remove(option);
              System.out.println("Updated Vehicle - " + auto);
  
              System.out.print("Make: ");
              auto.setMake(in.nextLine());
  
              System.out.print("Model: ");
              auto.setModel(in.nextLine());
  
              System.out.print("Color: ");
              auto.setColor(in.nextLine());
  
              System.out.print("Year: ");
              auto.setYear(Integer.parseInt(in.nextLine()));
  
              System.out.print("Mileage: ");
              auto.setMileage(Integer.parseInt(in.nextLine()));
  
              System.out.println("Your vehicle is updated!");
          }
      }
          else if (option == 0){
              //Exit the program
              break;
          }
      }
      //write the vehicles to a file
      PrintWriter outFile = new PrintWriter(new FileWriter("vehcles.txt"));
  
      for (Automobile auto : autos){
          outFile.println(auto);
      }  
          outFile.close();
      System.out.println("All Vehicle data has been written to vehicles.txt");
  
  }
  
  }
  </code></pre>