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Program: How to find does ArrayList contains all list elements or not?


Description:

Here we can see example for finding whether the instance of an ArrayList contains all objects of another Collection instance. Here we are checking with another List instance.


Code:
package com.java2novice.arraylist;

import java.util.ArrayList;
import java.util.List;

public class MyElementCheck {

	public static void main(String a[]){
		ArrayList<String> arrl = new ArrayList<String>();
		arrl.add("First");
		arrl.add("Second");
		arrl.add("Third");
		arrl.add("Random");
		List<String> list = new ArrayList<String>();
		list.add("Second");
		list.add("Random");
		System.out.println("Does ArrayList contains all list elements?: "
					+arrl.containsAll(list));
		list.add("one");
		System.out.println("Does ArrayList contains all list elements?: "
					+arrl.containsAll(list));
	}
}

Output:
Does ArrayList contains all list elements?: true
Does ArrayList contains all list elements?: false
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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
What is wrapper class?
Everything in java is an object, except primitives. Primitives are int, short, long, boolean, etc. Since they are not objects, they cannot return as objects, and collection of objects. To support this, java provides wrapper classes to move primitives to objects. Some of the wrapper classes are Integer, Long, Boolean, etc.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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