(Java) Modifying object variables modifies variables for all objects

Question

Good evening,

New to programming Java and still trying to get the hang of objects. I'm able to successfully modify the default parameters of an object when I create it. However when I create a second object and modify its parameters, it also impacts the first object and sets its parameters to the same values.

Please help when you have a chance.

public class Car {

    private static int wheels;
    private static String colour;
    private static boolean electric;
    
    public Car () {
        this.wheels = 4;
        this.colour = "default";
        this.electric = true;
    }
    
    public void setWheels(int wheels) {
        this.wheels = wheels;
    }
    
    public int getWheels() {
        return wheels;
    }
    
    public void setColour(String colour) {
        this.colour = colour;
    }
    
    public String getColour() {
        return colour;
    }
    
    public void setElectric(boolean electric) {
        this.electric = electric;
    }
    
    public boolean getElectric() {
        return electric;
    }
    
    public String toString() {
        System.out.println("Wheels: " + wheels + " Colour: " + colour + " Electric? " + electric);
        return " ";
    }
    
}

Second class which contains the main method is as follows:

import java.util.Scanner;

public class CarTesting {

    public static void main(String[] args) {

        Scanner userInput = new Scanner(System.in);
        System.out.println("Number of wheels");
        int numWheel = userInput.nextInt();
        System.out.println("Colour");
        String colour = userInput.next();
        System.out.println("Electric?");
        boolean electric = userInput.nextBoolean();
        
        Car car1 = new Car();
        Car car2 = new Car();
        
        Car autoShop[] = new Car[2];
        autoShop[0] = car1;
        autoShop[1] = car2;
        
        car1.setColour(colour);
        car1.setElectric(electric);
        car1.setWheels(numWheel);
        System.out.println(car1);
            
        System.out.println("Number of wheels");
        numWheel = userInput.nextInt();
        System.out.println("Colour");
        colour = userInput.next();
        System.out.println("Electric?");
        electric = userInput.nextBoolean();
        
        car2.setColour(colour);
        car2.setElectric(electric);
        car2.setWheels(numWheel);       
        
        System.out.println("Moment of truth");
        System.out.println(autoShop[0]);
        System.out.println(autoShop[1]);
    }

}