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 vote125 views1 answer
Java jframe image
Java
1 vote127 views1 answer
Android display drawable in imageview
Java
0 vote132 views1 answer
Resizing ImageIcon in JButton java
Java
0 vote160 views2 answers
Start/php>2
Java
1 vote137 views1 answer
Murtaza jafari
Java
1 vote167 views2 answers
Spring annotations xml configuration
Java Spring
1 vote125 views1 answer
Discord jda remove @everyone from channel
Java
0 vote149 views1 answer
Read and existing dir content in java
Java
0 vote142 views1 answer
Java 8 Functional Interfaces
Java
0 vote139 views1 answer
Constraint layout not matching parent in netsted scrollview
Java