The contains() method of java.util.concurrent.LinkedTransferQueue is an in-built function in Java which returns a true boolean value if the specified element is present in this queue otherwise it returns false.
Syntax:
LinkedTransferQueue.contains(Object o)
Parameters: The function accepts a single parameter o i.e. to be checked for the presence in this queue.
Return Value: The function returns a Boolean value. It returns True if the specified element is present in this queue else it returns False.
Below programs illustrate the LinkedTransferQueue.contains() method:
Program 1:
// Java Program Demonstrate contains() // method of LinkedTransferQueue import java.util.concurrent.*;
class LinkedTransferQueueContainsExample1 {
public static void main(String[] args)
{
// Initializing the queue
LinkedTransferQueue<Integer>
queue = new LinkedTransferQueue<Integer>();
// Adding elements to this queue
for ( int i = 10 ; i <= 15 ; i++)
queue.add(i);
// Checks if 9 is present in the queue
if (queue.contains( 9 ))
System.out.println( "9 is present in the queue." );
else
System.out.println( "9 is not present in the queue." );
}
} |
Output:
9 is not present in the queue.
Program 2:
// Java Program Demonstrate contains() // method of LinkedTransferQueue */ import java.util.concurrent.*;
class LinkedTransferQueueContainsExample2 {
public static void main(String[] args)
{
// Initializing the queue
LinkedTransferQueue<String>
queue = new LinkedTransferQueue<String>();
// Adding elements to this queue
queue.add( "Gfg" );
queue.add( "is" );
queue.add( "fun" );
// Checks if Gfg is present in the queue
if (queue.contains( "Gfg" ))
System.out.println( "Gfg is present in the queue." );
else
System.out.println( "Gfg is not present in the queue." );
}
} |
Output:
Gfg is present in the queue.