﻿ Java: Insert a given element into a priority queue

# Java Collection, PriorityQueue Exercises: Insert a given element into a priority queue

## Java Collection, PriorityQueue Exercises: Exercise-4 with Solution

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>();
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]```

Java Code Editor:

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## Java: Tips of the Day

getEnumMap

Converts to enum to Map where key is the name and value is Enum itself.

```public static <E extends Enum<E>> Map<String, E> getEnumMap(final Class<E> enumClass) {
return Arrays.stream(enumClass.getEnumConstants())
.collect(Collectors.toMap(Enum::name, Function.identity()));
}
```

Ref: https://bit.ly/3xXcFZt