Java: Insert a given element into a priority queue

Last update on March 12 2025 13:32:38 (UTC/GMT +8 hours)

Write a Java program to insert a given element into a priority queue.

Sample Solution:-

Java Code:

import java.util.PriorityQueue;

  public class Example4 {
  public static void main(String[] args) {

   // Create Priority Queue
           PriorityQueue<String> pq1 = new PriorityQueue<String>();  
   // use add() method to add values in the Priority Queue
          pq1.add("Red");
          pq1.add("Green");
          pq1.add("Black");
          pq1.add("White");
    System.out.println("Original Priority Queue: "+pq1);
   
   // Inserts the specified element into this priority queue.
    pq1.offer("Blue");
 
    System.out.println("The New Priority Queue: " + pq1);
  } 
}

Sample Output:

Original Priority Queue: [Black, Red, Green, White]                    
The New Priority Queue: [Black, Blue, Green, White, Red]

For more Practice: Solve these Related Problems:

• Write a Java program to insert an element into a PriorityQueue using offer() and then print the head element to verify its position.
• Write a Java program to insert a new element into a PriorityQueue with a custom comparator and display the updated ordering.
• Write a Java program to conditionally insert an element into a PriorityQueue only if it is not already present, then print the queue.
• Write a Java program to implement a method that inserts multiple elements into a PriorityQueue and then prints the queue after each insertion.

Java Code Editor:

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