PriorityBlockingQueue remainingCapacity() method in Java
The remainingCapacity method of PriorityBlockingQueue is used to check how much more elements can be inserted into this queue. But since the PriorityBlockingQueue is unbounded, this method always returns Integer.MAX_VALUE because a PriorityBlockingQueue is not capacity constrained.
Syntax:
public int remainingCapacity()
Return Value: Integer.MAX_VALUE always
Below programs illustrate remainingCapacity() method in PriorityBlockingQueue:
Program 1:
Java
// Java Program Demonstrate remainingCapacity()// method of PriorityBlockingQueueimport java.util.concurrent.PriorityBlockingQueue;public class GFG { public static void main(String[] args) { // define capacity of PriorityBlockingQueue int capacityOfQueue = 7; // create object of PriorityBlockingQueue PriorityBlockingQueue<Integer> pbq = new PriorityBlockingQueue<Integer>(capacityOfQueue); // Add element to PriorityBlockingQueue pbq.put(1); pbq.put(2); pbq.put(3); pbq.put(4); // find remaining Capacity of pbq // using remainingCapacity() method // The initial capacity was set to 7 // by passing as parameter in constructor // But this method will return Integer.MAX_VALUE int remainingCapacity = pbq.remainingCapacity(); // print result System.out.println("Queue: " + pbq); System.out.println("Remaining Capacity: " + remainingCapacity); }} |
Output:
Queue: [1, 2, 3, 4] Remaining Capacity: 2147483647
Program 2: To demonstrate remainingCapacity() using String
Java
// Java Program Demonstrate remainingCapacity()// method of PriorityBlockingQueueimport java.util.concurrent.PriorityBlockingQueue;public class GFG { public static void main(String[] args) { // create object of PriorityBlockingQueue PriorityBlockingQueue<String> pbq = new PriorityBlockingQueue<String>(); // Add element to PriorityBlockingQueue pbq.put("Geeks"); pbq.put("forGeeks"); pbq.put("A Computer"); pbq.put("Portal"); // find remaining Capacity of pbq // using remainingCapacity() method int remainingCapacity = pbq.remainingCapacity(); // print result System.out.println("Queue: " + pbq); System.out.println("Remaining Capacity: " + remainingCapacity); }} |
Output:
Queue: [A Computer, Portal, Geeks, forGeeks] Remaining Capacity: 2147483647
