![]() (employeePriorityQueue.remove ()) ĭeque is an acronym for “double-ended queue”. While (!employeePriorityQueue.isEmpty ()) In what order the objects should be dequeued. The compareTo() method implemented in the Employee class is used to determine If (this.getSalary () > employee.getSalary ())Įlse if (this.getSalary () employeePriorityQueue = new PriorityQueue () ĮmployeePriorityQueue.add (new Employee ("Rajeev", 100000.00)) ĮmployeePriorityQueue.add (new Employee ("Chris", 145000.00)) ĮmployeePriorityQueue.add (new Employee ("Andrea", 115000.00)) ĮmployeePriorityQueue.add (new Employee ("Jack", 167000.00)) Compare two employee objects by their public int compareTo (Employee employee) Return Objects.hash (name, public String toString () Return pare (employee.salary, salary) = 0 & Objects.equals (name, public int hashCode () If (o = null || getClass () != o.getClass ()) This.salary = public boolean equals (Object o) Public Employee (String name, double salary) PriorityQueue Example with Complex Data type in Java: import PriorityQueue queue = new PriorityQueue () Example to demonstrate Priority Queue in Java import java.util.* And elements are removed in ascending order from the queue. ![]() In this case, the head of the priority queue is the smallest element of the queue. Here, we have created a priority queue without any arguments. Syntax : PriorityQueue numbers = new PriorityQueue() The elements of the priority queue are ordered according to the natural ordering, or by a Comparator provided at queue construction time, depending on which constructor is used. But it does not order the elements in a FIFO manner. The PriorityQueue class provides the facility of using a queue. The PriorityQueue class provides the functionality of the heap data structure. poll(): Returns and removes the head of the queue. ![]() Throws an exception if the queue is empty.
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