Java: Create a new priority queue, add some colors (string) and print out the elements of the priority queue

Last update on March 12 2025 13:34:21 (UTC/GMT +8 hours)

Write a Java program to create a priority queue, add some colors (strings) and print out the elements of the priority queue.

Sample Solution:-

Java Code:

import java.util.PriorityQueue;
public class Exercise1 {
  public static void main(String[] args) {
  PriorityQueue<String> queue=new PriorityQueue<String>();  
  queue.add("Red");
  queue.add("Green");
  queue.add("Orange");
  queue.add("White");
  queue.add("Black");
  System.out.println("Elements of the Priority Queue: ");
  System.out.println(queue);
 }
}

Sample Output:

Elements of the Priority Queue:                                        
[Black, Green, Orange, White, Red] 

For more Practice: Solve these Related Problems:

• Write a Java program to create a PriorityQueue with a custom comparator (e.g., reverse alphabetical order) and add a set of color strings, then print the queue.
• Write a Java program to add a specified color to a PriorityQueue only if it doesn't already exist, and then display the updated queue.
• Write a Java program to create a PriorityQueue from an array of colors and then add an additional element using offer(), verifying its insertion by printing the head element.
• Write a Java program to append an element to a PriorityQueue and then merge it with another PriorityQueue, printing the final combined queue.

Java Code Editor:

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