JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: How to shuffle elements in ArrayList?


Description:

This example gives how to shuffle elements in the ArrayList. By calling Collections.shuffle() method you can shuffle the content of the ArrayList. Everytime you call shuffle() method, it generates different order of output.


Code:
package com.java2novice.arraylist;

import java.util.ArrayList;
import java.util.Collections;

public class MyArrayListShuffle {

	public static void main(String a[]){
		ArrayList<String> list = new ArrayList<String>();
		list.add("Java");
		list.add("Cric");
		list.add("Play");
		list.add("Watch");
		list.add("Glass");
		list.add("Movie");
		list.add("Girl");
		
		Collections.shuffle(list);
		System.out.println("Results after shuffle operation:");
		for(String str: list){
			System.out.println(str);
		}
		
		Collections.shuffle(list);
		System.out.println("Results after shuffle operation:");
		for(String str: list){
			System.out.println(str);
		}
	}
}

Output:
Results after shuffle operation:
Movie
Girl
Watch
Glass
Java
Cric
Play
Results after shuffle operation:
Glass
Watch
Play
Girl
Cric
Movie
Java
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List Of All ArrayList Sample Programs:

  1. Basic ArrayList Operations.
  2. How to read all elements in ArrayList by using iterator?
  3. How to copy or clone a ArrayList?
  4. How to add all elements of a list to ArrayList?
  5. How to delete all elements from my ArrayList?
  6. How to find does ArrayList contains all list elements or not?
  7. How to copy ArrayList to array?
  8. How to get sub list from ArrayList?
  9. How to sort ArrayList using Comparator?
  10. How to reverse ArrayList content?
  11. How to shuffle elements in ArrayList?
  12. How to swap two elements in a ArrayList?
  13. How to convert list to csv string format?
Knowledge Centre
Interface and its usage
Interface is similar to a class which may contain method's signature only but not bodies and it is a formal set of method and constant declarations that must be defined by the class that implements it. Interfaces are useful for declaring methods that one or more classes are expected to implement, capturing similarities between unrelated classes without forcing a class relationship and determining an object's programming interface without revealing the actual body of the class.

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Reference: Java™ Platform Standard Ed. 6 - API Specification | Java is registered trademark of Oracle.
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