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

0 vote229 views1 answer
File with line numbers inserted java
Java
-2 votes238 views2 answers
Https://www.roblox.com/home
Java
0 vote248 views1 answer
How to insert a 0 in an array java
Java
0 vote248 views1 answer
Java digit in number
Java
-1 vote224 views1 answer
Java remove punctuation from string
Java
-1 vote245 views1 answer
Convert Date to LocalDate via Instant
Java
1 vote251 views1 answer
Cannot resolve class android.support.design.widget.CoordinatorLayout
Java
3 votes237 views1 answer
Howow to use font object Java
Java
21 votes281 views4 answers
Java 2 decimals
Java
1 vote228 views1 answer
Check if a char is a space java
Java