How can I make random fragments in the list?

Question

Java

I have a list in which there will be 9 elements that should be randomly selected from the list of fragments ...
how can I do it?

Answer 1

List can be shuffled using Collections.shuffle

import java.util.*;

public class ShuffleDemo {
    public static void main(String[] args) {
        Integer[] numbers = {1, 2, 3, 4, 5, 6, 7, 8, 9};
        ArrayList<Integer> numbersList = new ArrayList<>(Arrays.asList(numbers));

        long seed = System.nanoTime();
        Collections.shuffle(numbersList, new Random(seed));

        for(int x = 0; x < numbersList.size(); x++) {
                System.out.print(numbersList.get(x) + " ");
        }
    }
}