How to fetch random value from the arrayList in Java?

How can fetch random value from the below ArrayList ?

import java.util.*;
import java.io.*;
public class Solution{
    public static void main(String[] args){
        List<Integer> number = new ArrayList<Integer>();
        number.add(10);
        number.add(30);
        number.add(40);
        number.add(80);
        number.add(100);
    }
}