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
