LinkedTransferQueue in Java

In Java, the LinkedTransferQueue is a part of the java.util.concurrent package and implements the TransferQueue. It is specifically designed for handling concurrent data transfers. It is a non-blocking, thread-safe, unbounded queue that supports both producer-consumer and transfer operations, making it suitable for high-performance, multi-threaded applications.

• Most of its methods are non-blocking, offering thread-safe operations without locking.
• It can grow dynamically to accommodate more elements without any predefined limit.
• Optimized for high-throughput and low-latency transfers in multi-threaded environments.
• The transfer() method allows producers to send elements directly to consumers.

Example: This example, demonstrates how to add elements to a LinkedTransferQueue and then retrieve and print them using poll() until the queue is empty.

LinkedTransferQueue is: 
1 2 3 

LinkedTransferQueue Hierarchy

Declaration of LinkedTransferQueue

In Java, the declaration of LinkedTransferQueue can be done as:

LinkedTransferQueue<Type> queue = new LinkedTransferQueue<>();

Note: Here, the Type is the type of element the queue will store(e.g String, Integer)

Constructors

Example 1: This example demonstrates how to create a LinkedTransferQueue add elements to it, and then copy the elements to another LinkedTransferQueue.

LinkedTransferQueue1: [1, 2, 3, 4]
LinkedTransferQueue2: [1, 2, 3, 4]

Example 2: This example demonstrates how use various methods of LinkedTransferQueue.

LinkedTransferQueue: [10, 20, 30, 40]
Size of LinkedTransferQueue: 4
First element: 10
Linked Transfer Queue: [20, 30, 40]
Size of LinkedTransferQueue: 3

Performing Various Operations on LinkedTransferQueue

1. Adding Elements: We can use various like add(), put(), offer() method to insert element in a LinkedTransferQueue without waiting for other thread. The transfer() method waits until another thread is ready to take the element.

Example: This example demonstrates adding, offering, and transferring elements in a LinkedTransferQueue including blocking operations like put() and transfer() across thread.

adding 15 true
The elements in the queue are:
10 11 12 13 14 15 16 17 18 19 20 
Transferring an element
Element transfer is complete
Geeks for Geeks is a computer science portal.

2. Remove Elements: We can use remove() method to remove an element if it is present in the queue.

Example: This example demonstrates how to remove specific element from the queue using remove() method.

The elements in the Queue are:
1 2 3 4 5 
Remaining elements in Queue are : 
2 3 4 

3. Iterating Elements: We can use the iterator() method of LinkedTransferQueue which return an iterator that allows traversing through the elements of the queue.

Example: This example demonstrates iterating over the elements of a LinkedTransferQueue using an iterator.

GeeksForGeeks is fun!! 

Methods

Methods Declared in Class java.util.AbstractQueue

Methods Declared in Class java.util.AbstractCollection

Methods Declared in Interface java.util.concurrent.BlockingQueue

Methods Declared in Interface java.util.Collection

Methods Declared in Interface java.util.Queue

Methods Declared in Interface java.util.concurrent.TransferQueue