Answers for "how to create a queue of object in java"

38

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();
Posted by: Guest on March-16-2020
1

Java Queue Implementation

import java.util.*;
public class Main {
    public static void main(String[] args) {
        Queue<Integer> q1 = new LinkedList<Integer>();
        //Add elements to the Queue
        q1.add(10);
        q1.add(20);
        q1.add(30);
        q1.add(40);
        q1.add(50);
        System.out.println("Elements in Queue:"+q1);
        //remove () method =>removes first element from the queue
        System.out.println("Element removed from the queue: "+q1.remove());
        //element() => returns head of the queue
        System.out.println("Head of the queue: "+q1.element());
        //poll () => removes and returns the head
        System.out.println("Poll():Returned Head of the queue: "+q1.poll());
        //returns head of the queue
        System.out.println("peek():Head of the queue: "+q1.peek());
        //print the contents of the Queue
        System.out.println("Final Queue:"+q1);
    }
}
Posted by: Guest on April-10-2022
1

queue in java

//this a basic one 
public class prosses {
    int [] s;
    int quu;
    int tu;
  
    prosses () {//constructor
        s = new int[20];
        quu = -1;
        tu = 0;
    }
  
    void enqueue (int d) {//for input and prosses
        if (quu >= 19) {
            System.out.println("stack is full");
        } else {
            s[++quu] = d;

        }
    }
  
    int dequeue(){//to send the output
        if(quu<0 && quu>19 && tu<0 && tu>19) {
            System.out.println("not possible");
            return 'n';
        }

        return s[tu++];
    }
}
Posted by: Guest on April-06-2022

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