Question

Is there a way to pick a random object from an array of objects?

I have tried a few ways that I could think of but none work.
I want to use a function in the random class (all classes will have the same function but different returns).

I should have mentioned i am trying to return an image, and each time i try to return a random image it doesnt return anyting (“null”)

Here is some of my code I am having the problem with:

    Car car;
    Ford ford;
    Mazda mazda
    Fiat fiat
    Rover rover   

    Car carlist[] = {ford,fiat,mazda,rover}

public void paint(){
//this displays an image every 128 pixles 
        for (int i = 0;i<Width;i+=128){

            for(int j=128; j<Height;j+=128){
// this draws the image (the image is declaired in each car's class as getImage)
                g.drawImage((car.carList[rand.nextInt(5)]).getImage(), i, j , this);
                    }
                }

The code works if i put an object in (instead of carcarList[rand.nextInt(5)])).
Each of the cartypes extend Cars.

Answer 1

Assuming yourList is the array of your objects, use this single line:

Object randomObj = yourList[(int)Math.random() * list.length];