Here is the source code of the Java program to implement Dijkstra’s algorithm using. After implementation test case examples, has been provided. This Java program,to Implement Dijkstra’s algorithm using Priority Queue.Dijkstra’s algorithm is a graph search algorithm that solves the single-source shortest path problem for a graph with non-negative edge path costs, producing a shortest path tree. Option:2 you can display the list of priority queue. option 1 – in which you can enter patent name and priority. Program allows you to enter information at run time. The Java program below shows the implementation of the Min Priority Queue in Java. This is called the Min priority queue with ascending order of elements. This program adds the patient information at run time and display the patient list. The natural ordering of Priority Queue has the least or smallest element at the head of the queue and thus the ordering is ascending. Priority Queue Java implementation- Complete program: In program, below classes are implemented.Ĭlass Patient: Patient class having patient name and priorityĬlass PatientPriorit圜omparator : Priorityqueue comparator to decide the emergency patientĬlass PriorityQueueExample – Test program for Priority queue, add and remove patient on run time and will manage priority queue. Its Implementation is very simple and code comments has been provided. Solution: To implement it, we will use java PriorityQueue class and java comparator interface. If some emergency patient come, he will be given a priority and will be treated first. Let’s implement a simple real-time application of priority queue in java Real time application example of priority queue in java:Īpplication – Patient Priority queue in a hospital: There is a queue of patients in hospital. Though there are many uses of priority queue, one simple use we can consider that is thread scheduling algorithms where high priority threads start first. This is the properties of a priority queue. But, if some element comes with high priority then it will be added at the head of the queue. If another element with same priority comes then it will be added at tail of the queue. Priority queue is just like a traditional queue with difference that when a high priority elements come to join a queue, it gets added at the head of the queue instead of tail (We know that in a queue, elements get added at the tail).įor example, let’s say, 5 elements with the same priority are in a queue. With real time application example program, the priority queue in java will be described. Java priority queue with example and implementation will be answered.
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