ArrayBlockingQueue remainingCapacity() Method in Java Last Updated : 04 Apr, 2023 Comments Improve Suggest changes Like Article Like Report ArrayBlockingQueue is bounded, blocking queue that stores the elements internally backed by an array. ArrayBlockingQueue class is a member of the Java Collections Framework. Bounded means it will have a fixed size, you can not store number the elements more than the capacity of the queue. The queue also follows FIFO (first-in-first-out) rule for storing and removing elements from the queue. If you try to put an element into a full queue or to take an element from an empty queue then the queue will block you. The remainingCapacity() method returns number of more elements that can be added to queue without blocking. This is always equal to difference between the initial capacity of this queue and the current size of this queue. Syntax: public int remainingCapacity() Parameters: The method does not take any parameters. Return Value: The method returns the remaining capacity of the queue. Below programs illustrate remainingCapacity() method of ArrayBlockingQueue: Program 1: Java // Program to demonstrate remainingCapacity() method // of ArrayBlockingQueue import java.util.concurrent.ArrayBlockingQueue; public class GFG { public static void main(String[] args) { // Define capacity of ArrayBlockingQueue int capacity = 5; // Create object of ArrayBlockingQueue ArrayBlockingQueue<Integer> queue = new ArrayBlockingQueue<Integer>(capacity); // Add elements to ArrayBlockingQueue queue.add(23); queue.add(32); // Print queue after adding numbers System.out.println("Queue :" + queue); // Check remaining capacity int remainingCapacity = queue.remainingCapacity(); System.out.println("Remaining Capacity:" + remainingCapacity); // Add elements to ArrayBlockingQueue queue.add(54); queue.add(78); // Print queue after adding numbers System.out.println("Queue :" + queue); // Check remaining capacity System.out.println("Remaining Capacity:" + queue.remainingCapacity()); } } Output: Queue :[23, 32] Remaining Capacity:3 Queue :[23, 32, 54, 78] Remaining Capacity:1 Program 2: Java // Program to demonstrate remainingCapacity() method // of ArrayBlockingQueue import java.util.concurrent.ArrayBlockingQueue; public class GFG { // Create a User Object with name and age as an attribute public class User { public String name; public String age; User(String name, String age) { this.name = name; this.age = age; } } // Main Method public static void main(String[] args) { GFG gfg = new GFG(); gfg.RemainingCapacityExample(); } // Method to give example of remaining capacity function public void RemainingCapacityExample() { // Define capacity of ArrayBlockingQueue int capacity = 5; // Create object of ArrayBlockingQueue ArrayBlockingQueue<User> queue = new ArrayBlockingQueue<User>(capacity); // Create user objects User user1 = new User("Aman", "24"); User user2 = new User("Amar", "23"); User user3 = new User("Sanjeet", "25"); // Add Objects to ArrayBlockingQueue queue.offer(user1); queue.offer(user2); queue.offer(user3); // Check remaining capacity int remainingCapacity = queue.remainingCapacity(); System.out.println("Remaining Capacity:" + remainingCapacity); User user4 = new User("Suvo", "26"); User user5 = new User("Ravi", "22"); // Adding more objects queue.offer(user2); queue.offer(user3); // Check remaining capacity remainingCapacity = queue.remainingCapacity(); System.out.println("Remaining Capacity:" + remainingCapacity); } } Output: Remaining Capacity:2 Remaining Capacity:0 Reference: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ArrayBlockingQueue.html#remainingCapacity() Comment More infoAdvertise with us Next Article ArrayBlockingQueue remainingCapacity() Method in Java A AmanSingh2210 Follow Improve Article Tags : Java Java-Collections Java - util package Java-Functions Java-ArrayBlockingQueue +1 More Practice Tags : JavaJava-Collections Similar Reads ArrayBlockingQueue Class in Java In Java, the ArrayBlockingQueue class is part of the java.util.concurrent package and implements the BlockingQueue interface. It is a thread-safe, bounded queue that helps manage producer-consumer scenarios by blocking threads when the queue is full or empty.The queue has a fixed size, specified dur 8 min read ArrayBlockingQueue add() method in Java ArrayBlockingQueue is bounded, blocking queue that stores the elements internally backed by an array. ArrayBlockingQueue class is a member of the Java Collections Framework. Bounded means it will have a fixed size, you can not store number the elements more than the capacity of the queue. The queue 3 min read ArrayBlockingQueue clear() Method in Java ArrayBlockingQueue is bounded, blocking queue that stores the elements internally backed by an array. ArrayBlockingQueue class is a member of the Java Collections Framework.Bounded means it will have a fixed size, you can not store number the elements more than the capacity of the queue.The queue al 2 min read ArrayBlockingQueue contains() method in Java ArrayBlockingQueue is bounded, blocking queue that stores the elements internally backed by an array. ArrayBlockingQueue class is a member of the Java Collections Framework. Bounded means it will have a fixed size, you can not store number the elements more than the capacity of the queue. The queue 3 min read ArrayBlockingQueue drainTo() Method in Java ArrayBlockingQueue is bounded, blocking queue that stores the elements internally backed by an array. ArrayBlockingQueue class is a member of the Java Collections Framework.Bounded means it will have a fixed size, you can not store number the elements more than the capacity of the queue.The queue al 5 min read ArrayBlockingQueue iterator() Method in Java The iterator() method of ArrayBlockingQueue class is used to returns an iterator of the same elements as this queue in a proper sequence. The elements returned from this method contains elements in order from first(head) to last(tail). The returned iterator is weakly consistent. Syntax: public Itera 2 min read ArrayBlockingQueue offer() Method in Java ArrayBlockingQueue is bounded, blocking queue that stores the elements internally backed by an array. ArrayBlockingQueue class is a member of the Java Collections Framework. Bounded means it will have a fixed size, you can not store number the elements more than the capacity of the queue. The queue 6 min read ArrayBlockingQueue peek() Method in Java ArrayBlockingQueue is bounded, blocking queue that stores the elements internally backed by an array. ArrayBlockingQueue class is a member of the Java Collections Framework.Bounded means it will have a fixed size, you can not store number the elements more than the capacity of the queue.The queue al 2 min read ArrayBlockingQueue poll() Method in Java ArrayBlockingQueue is bounded, blocking queue that stores the elements internally backed by an array. ArrayBlockingQueue class is a member of the Java Collections Framework. Bounded means it will have a fixed size, you can not store number the elements more than the capacity of the queue. The queue 4 min read ArrayBlockingQueue put() method in Java ArrayBlockingQueue is bounded, blocking queue that stores the elements internally backed by an array. ArrayBlockingQueue class is a member of the Java Collections Framework. Bounded means it will have a fixed size, you can not store number the elements more than the capacity of the queue. The queue 2 min read Like