A final counter in a for loop?

Question

I have this code:

    List r = new ArrayList<>();
    for(int i = 0; i < 10; i++) {
        r.add(new Runnable() {

            @Ove         


        

Answer 1

(Less-than optimal) alternative: create a small inner class that implements Runnable:

class Printer implements Runnable {
    private int index;

    public Printer(int index) {
        this.index = index;
    }

    public void run() {
        System.out.println(index);
    }
}

List r = new ArrayList<>();
for(int i = 0; i < 10; i++) {
    r.add(new Printer(i));
}