Question

How to remove the first element from LinkedList in Java

Answer 1

import java.util.LinkedList;
  
public class MyClass {
    public static void main(String args[]) {
        LinkedList<String> linklist = new LinkedList<String>();

        linklist.add("1"); 
        linklist.add("2");
        linklist.add("3");
        linklist.add("4"); 
        linklist.add("5");
        linklist.add("6");
        linklist.add("713");
  
        Object o = linklist.removeFirst();
        System.out.println(o);
      
        System.out.println(linklist);
    }
}


  
/*
run:
  
1
[2, 3, 4, 5, 6, 713]
  
*/

 

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Answer 2

import java.util.LinkedList; 
  
public class MyClass {
    public static void main(String args[]) { 
        LinkedList<String> ll = new LinkedList<String>(); 
   
        ll.add("c++"); 
        ll.add("java"); 
        ll.add("c#"); 
        ll.add("c"); 
        ll.add("php"); 
        ll.add("python"); 
   
        System.out.println(ll); 
         
        ll.pop();
         
        System.out.println(ll); 
    }
}
  
  
  
/*
run:
  
[c++, java, c#, c, php, python]
[java, c#, c, php, python]
  
*/

 

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