AbstractCollection containsAll() Method in Java with Examples
The containsAll() method of Java AbstractCollection 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:
AbstractCollection.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 AbstractCollection.conatinsAll() method:
Program 1:
import java.util.*;
class AbstractCollectionDemo {
public static void main(String args[])
{
AbstractCollection<String>
abs = new LinkedList<String>();
abs.add( "Geeks" );
abs.add( "for" );
abs.add( "Geeks" );
abs.add( "10" );
abs.add( "20" );
AbstractCollection<String>
abs2 = new LinkedList<String>();
abs2.add( "Geeks" );
abs2.add( "for" );
abs2.add( "Geeks" );
abs2.add( "10" );
abs2.add( "20" );
System.out.println( "\nBoth the collections same: "
+ abs.containsAll(abs2));
}
}
|
Output:
Both the collections same: true
Program 2:
import java.util.*;
class AbstractCollectionDemo {
public static void main(String args[])
{
AbstractCollection<String>
abs = new LinkedList<String>();
abs.add( "Geeks" );
abs.add( "for" );
abs.add( "Geeks" );
AbstractCollection<String>
abs2 = new LinkedList<String>();
abs2.add( "10" );
abs2.add( "20" );
System.out.println( "\nBoth the collections same: "
+ abs.containsAll(abs2));
}
}
|
Output:
Both the collections same: false
Last Updated :
26 Nov, 2018
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