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

0 vote231 views1 answer
Api for exchange rates
Java
2 votes271 views1 answer
> Task :run FAILED Error: Could not find or load main class Caused by: java.lang.ClassNotFoundException:
Java
0 vote252 views1 answer
Install java in wsl2
Java
1 vote267 views1 answer
Java "->"
Java
0 vote269 views1 answer
Junit 5 dependency maven
Java
0 vote262 views1 answer
Previous method in jdbc
Java
0 vote271 views1 answer
How do I make my Android app scrollable?
Java
0 vote314 views1 answer
Java.io.File android.content.Context.getCacheDir()
Java
1 vote283 views1 answer
Play ringtone android in infinite loop
Java
0 vote278 views1 answer
Fizzbuzz java
Java