Queue in java

Java queue

import java.util.*;

Queue<Integer> queue = new LinkedList<Integer>();
// use non-primative types when constructing

// to add a value to the back of queue:
queue.add(7);

// to remove and return front value:
int next = queue.remove();

// to just return front value without removing:
int peek = queue.peek();

Queue in java

queues, //add, remove, peek , size()
    Queue<Integer> q = new LinkedList<>();
	- Unlike stacks, a queue is open at both its ends. (one end enqueue & one end remove data, dequeue) FIFO
	- enqueue() − add (store) an item to the queue. 
	- dequeue() − remove (access) an item from the queue.
	- peek() − Gets the element at the front of the queue without removing it.
	- isfull() − Checks if the queue is full.
	- isempty() − Checks if the queue is empty.
      
      Queue<Integer> queue = new LinkedList<Integer>();
        queue.add(10);
        queue.add(20);
        int a = queue.remove();
        int peek = queue.peek();
        System.out.println(queue + " " + a); //[20] 10

Queue.isempty java

while (!QUEUE.isEmpty()) {
  QUEUE.remove();
 }

Java Queue

The Queue interface is available in java.util package and extends the Collection interface. The queue collection is used to hold the elements about to be processed and provides various operations like the insertion, removal etc. It is an ordered list of objects with its use limited to insert elements at the end of the list and deleting elements from the start of list i.e. it follows the FIFO or the First-In-First-Out principle.

LinkedList, ArrayBlockingQueue and PriorityQueue are the most frequently used implementations.

Source: sites.google.com

Similar codes

1 vote228 views6 answers
This version of the Android Support plugin for IntelliJ IDEA (or Android Studio) cannot open this project, please retry with version 4.1 or newer.
Java
1 vote187 views1 answer
Java string to decimal
Java
1 vote164 views1 answer
How to extract decimal vqalue from float in android studio
Java
0 vote211 views1 answer
Failed to resolve org.junit.platform:junit-platform-launcher:1.7.0
Java
0 vote176 views1 answer
Java stdin and stdout ii hackerrank solution
Java
1 vote171 views1 answer
Tableau de classe java
Java
0 vote236 views2 answers
Cors spring method or class
Java
0 vote184 views1 answer
AmazonS3ClientBuilder
Java
7 votes172 views2 answers
Java subscript
Java
0 vote163 views1 answer
Return 0 and return 1 in java
Java