Question

How to get the first element from queue in Java

Answer 1

import java.util.LinkedList; 
import java.util.Queue; 

public class MyClass {
    static Queue<Integer> queue; 

    public static void main(String args[]) { 
        queue = new LinkedList<Integer>(); 
        
        for (int i = 0; i < 10; i++) 
            queue.add(i); 
        
        int head = queue.peek(); 

        System.out.println(head); 
    }
}



/*
run:

0

*/

 

70+ SQL courses for beginners and professionals