Java LinkedTransferQueue peek() Method

The peek() method of Java LinkedTransferQueue class retrieves the head of this queue, but doesn't remove it. The method returns null if this queue is empty.

Syntax:

Parameters:

NA

Specified By:

The peek() method of LinkedTransferQueue class is specified by peek() method in interface Queue<E>.

Return value:

The peek() method returns this queue's head and if this queue is empty, it returns null.

Example 1

Output:

 Head of queue : Jack Queue : [Jack, Harry, Peter, Krish] 

Example 2

Output:

 Harry got 97 marks. John got 87 marks. Peter got 77 marks. Topper of the class is Harry 

Example 3

Output:

 Head of queue is : null