Pilih item secara rawak daripada senarai dalam Java

Random nameOfObject = new Random();

import java.util.*;
public class Randomly {
   public static void main(String[] args) {
     // Creating arraylist 
     ArrayList<Integer> araylist = new ArrayList<Integer>();
     // Adding elements in arraylist
     araylist.add(8);
     araylist.add(5);
     araylist.add(2);
     araylist.add(9);
     araylist.add(4);
     araylist.add(7);
     System.out.println("Elements of the list : ");
     // loop to iterate through elements
     for(int i = 0; i < araylist.size(); i++ ) {
       // to print the elements in the list
       System.out.println(araylist.get(i)); 
     }
     Random rndm = new Random(); 
     // creating object
     int rndmElem = araylist.get(rndm.nextInt(araylist.size()));
     System.out.println("Selecting a random element from the list : " + rndmElem);
   }
}

Elements of the list : 
8
5
2
9
4
7
Selecting a random element from the list : 8

import java.util.*;
public class Randomly {
   public static void main(String[] args) {
      // Creating arraylist 
      ArrayList<Integer> araylist = new ArrayList<Integer>();
      // Adding elements in arraylist
      araylist.add(8);
      araylist.add(5);
      araylist.add(2);
      araylist.add(9);
      araylist.add(4);
      araylist.add(7);
      System.out.println("Elements of the list : ");
      // loop to iterate through elements
      for(int i = 0; i < araylist.size(); i++ ) {
         // to print the elements in the list
         System.out.println(araylist.get(i)); 
      }
      Random rndm = new Random();
      int noOfrndmElem = 2;
      System.out.println("Selecting two elements randomly from the list : ");
      for (int i = 0; i < noOfrndmElem; i++) {
         int rndmIndx = rndm.nextInt(araylist.size());
         Integer rndmElem = araylist.get(rndmIndx);
         System.out.print(rndmElem + " ");
      }
   }
}

Elements of the list : 
8
5
2
9
4
7
Selecting two elements randomly from the list : 
8 2 

import java.util.*;
public class Randomly {
   public static void main(String[] args) {
      // Creating arraylist 
      ArrayList<Integer> araylist = new ArrayList<Integer>();
      // Adding elements in arraylist
      araylist.add(8);
      araylist.add(5);
      araylist.add(2);
      araylist.add(9);
      araylist.add(4);
      araylist.add(7);
      System.out.println("Elements of the list : ");
      // loop to iterate through elements
      for(int i = 0; i < araylist.size(); i++ ) {
         // to print the elements in the list
         System.out.println(araylist.get(i)); 
      }
      Random rndm = new Random();
      int noOfrndmElem = 2;
      System.out.println("Selecting two elements randomly from the list : ");
      for (int i = 0; i < noOfrndmElem; i++) {
         int rndmIndx = rndm.nextInt(araylist.size());
         Integer rndmElem = araylist.get(rndmIndx);
         System.out.print(rndmElem + " ");
         araylist.remove(rndmIndx);
      }
   }
}

Elements of the list : 
8
5
2
9
4
7
Selecting two elements randomly from the list : 
7 2