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.
