AbstractSequentialList contains() method in Java with Example
The contains() method of Java AbstractSequentialList is used to check whether an element is present in a Collection or not. It takes the element as a parameter and returns True if the element is present in the collection.
Syntax:
public boolean contains(Object element)
Parameters: The parameter element is of type Collection. This parameter refers to the element whose occurrence is needed to be checked in the collection.
Return Value: The method returns a boolean value. It returns True if the element is present in the Collection otherwise it returns False.
Below programs illustrate the AbstractSequentialList.contains() method:
Program 1:
// Java code to illustrate // AbstractSequentialList.contains() import java.util.*; public class GFG { 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( "Beginner" ); abs.add( "for" ); abs.add( "Beginner" ); abs.add( "10" ); abs.add( "20" ); // Displaying the collection System.out.println( "AbstractSequentialList: " + abs); // Check if the collection contains "Hello" System.out.println( "\nDoes the Collection" + " contains 'Hello': " + abs.contains( "Hello" )); // Check if the Collection contains "20" System.out.println( "Does the collection" + " contains '20': " + abs.contains( "20" )); // Check if the Collection contains "Beginner" System.out.println( "Does the Collection" + " contains 'Beginner': " + abs.contains( "Beginner" )); } } |
Output:
AbstractSequentialList: [Beginner, for, Beginner, 10, 20] Does the Collection contains 'Hello': false Does the collection contains '20': true Does the Collection contains 'Beginner': true
Program 2:
// Java code to illustrate // AbstractSequentialList.contains() import java.util.*; public class GFG { public static void main(String args[]) { // Creating an empty Collection AbstractSequentialList<Integer> abs = new LinkedList<Integer>(); // Use add() method to add // elements in the collection abs.add( 10 ); abs.add( 20 ); abs.add( 30 ); abs.add( 40 ); abs.add( 50 ); // Displaying the collection System.out.println( "AbstractSequentialList:" + abs); // Check if the collection contains 10 System.out.println( "\nDoes the Collection " + "contains '10': " + abs.contains( 10 )); // Check if the collection contains 50 System.out.println( "\nDoes the Collection" + " contains '50': " + abs.contains( 50 )); // Check if the Collection contains 100 System.out.println( "Does the collection" + " contains '100': " + abs.contains( 100 )); } } |
Output:
AbstractSequentialList:[10, 20, 30, 40, 50] Does the Collection contains '10': true Does the Collection contains '50': true Does the collection contains '100': false
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