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AbstractSequentialList conatinsAll() method in Java with Example

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  • Last Updated : 24 Dec, 2018
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The containsAll() method of Java AbstractSequentialList is used to check whether two Collections contain the same elements or not. It takes one collection as a parameter and returns True if all of the elements of this collection is present in the other collection.

Syntax:

public boolean containsAll(Collection C)

Parameters: The parameter C is a Collection. This parameter refers to the collection whose elements occurrence is needed to be checked in this collection.

Return Value: The method returns True if this collection contains all the elements of other Collection otherwise it returns False.

Below programs illustrate the AbstractSequentialList.conatinsAll() method:

Program 1:




// Java code to illustrate
// AbstractSequentialList containsAll()
  
import java.util.*;
  
class AbstractSequentialListDemo {
    public static void main(String args[])
    {
  
        // Creating an empty Collection
        AbstractSequentialList<String>
            abs = new LinkedList<String>();
  
        // Use add() method to
        // add elements in the collection
        abs.add("Geeks");
        abs.add("for");
        abs.add("Geeks");
        abs.add("10");
        abs.add("20");
  
        // prints the list
        System.out.println("AbstractSequentialList 1: "
                           + abs);
  
        // Creating another empty Collection
        AbstractSequentialList<String>
            abs2 = new LinkedList<String>();
  
        // Use add() method to
        // add elements in the collection
        abs2.add("Geeks");
        abs2.add("for");
        abs2.add("Geeks");
        abs2.add("10");
        abs2.add("20");
  
        // prints the list
        System.out.println("AbstractSequentialList 2: "
                           + abs2);
  
        // Check if the collection
        // contains same elements
        System.out.println("\nBoth the collections same: "
                           + abs.containsAll(abs2));
    }
}

Output:

AbstractSequentialList 1: [Geeks, for, Geeks, 10, 20]
AbstractSequentialList 2: [Geeks, for, Geeks, 10, 20]

Both the collections same: true

Program 2:




// Java code to illustrate boolean containsAll()
  
import java.util.*;
  
class AbstractSequentialListDemo {
    public static void main(String args[])
    {
  
        // Creating an empty Collection
        AbstractSequentialList<String>
            abs = new LinkedList<String>();
  
        // Use add() method to
        // add elements in the collection
        abs.add("Geeks");
        abs.add("for");
        abs.add("Geeks");
  
        // prints the list
        System.out.println("AbstractSequentialList 1: "
                           + abs);
  
        // Creating another empty Collection
        AbstractSequentialList<String>
            abs2 = new LinkedList<String>();
  
        // Use add() method to
        // add elements in the collection
        abs2.add("10");
        abs2.add("20");
  
        // prints the list
        System.out.println("AbstractSequentialList 2: "
                           + abs2);
  
        // Check if the collection
        // contains same elements
        System.out.println("\nAre both collections same: "
                           + abs.containsAll(abs2));
    }
}

Output:

AbstractSequentialList 1: [Geeks, for, Geeks]
AbstractSequentialList 2: [10, 20]

Are both collections same: false

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