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 implementation in java using arraylist

Queue<Integer> queue=new ArrayList<Integer>();

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 vote211 views1 answer
Accessing 2d array in java
Java
9 votes368 views2 answers
Change the default port in spring boot
Java Spring
0 vote212 views1 answer
Java insert char in string at index
Java
35 votes193 views6 answers
Check java version
Java
0 vote239 views1 answer
Download a website as string kotlin
Java
0 vote235 views2 answers
Assert log in unit testing
Java
1 vote206 views1 answer
Scala vs java
Java
6 votes270 views1 answer
Set size of a jframe
Java
1 vote250 views1 answer
Arrays.asLisy in java
Java
0 vote190 views1 answer
Android studio proportional width
Java