The toString() method of PriorityBlockingQueue returns String representation of this PriorityBlockingQueue showing details of element contained by PriorityBlockingQueue. The string of PriorityBlockingQueue contains elements of PriorityBlockingQueue in the same order returned by its iterator, enclosed in square brackets(“[]”). The elements are separated by the characters ”, ” (comma and a space). So basically the toString() method is used to convert all the elements of PriorityBlockingQueue into a single String.
Syntax:
public String toString()
Returns: This method returns a String representing the elements of this PriorityBlockingQueue.
Below programs illustrate toString() method of PriorityBlockingQueue:
Example 1: To demonstrate toString() method on PriorityBlockingQueue which contains a list of Integers.
Java
// Java Program Demonstrate toString()// method of PriorityBlockingQueueimport java.util.concurrent.PriorityBlockingQueue;import java.util.*;public class GFG { public static void main(String[] args) throws InterruptedException { // create object of PriorityBlockingQueue PriorityBlockingQueue<Integer> PrioQueue = new PriorityBlockingQueue<Integer>(); // Add numbers to PriorityBlockingQueue PrioQueue.put(45815616); PrioQueue.put(4981561); PrioQueue.put(4594591); PrioQueue.put(9459156); // get String representation of PriorityBlockingQueue String str = PrioQueue.toString(); // print Details System.out.println("String representation: " + str); }} |
String representation: [4594591, 9459156, 4981561, 45815616]
Example 2: To demonstrate toString() method on PriorityBlockingQueue which contains list of Strings
Java
// Java Program Demonstrate toString()// method of PriorityBlockingQueueimport java.util.concurrent.PriorityBlockingQueue;import java.util.*;public class GFG { public static void main(String[] args) throws InterruptedException { // create object of PriorityBlockingQueue // which contains Strings PriorityBlockingQueue<String> names = new PriorityBlockingQueue<String>(); // Add Strings names.add("Geeks"); names.add("forGeeks"); names.add("A Computer Portal"); names.add("By Sandeep Jain"); // get String representation of PriorityBlockingQueue String str = names.toString(); // print Details System.out.println("String representation: " + str); }} |
String representation: [A Computer Portal, By Sandeep Jain, Geeks, forGeeks]
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/PriorityBlockingQueue.html#toString–
