How to get elements of a LinkedList in Java

Problem Description

How to get elements of a LinkedList?

Solution

Following example demonstrates how to get elements of LinkedList using top() & pop() methods.

import java.util.*;

public class Main {
   private LinkedList list = new LinkedList();
   public void push(Object v) {
      list.addFirst(v);
   }
   public Object top() {
      return list.getFirst();
   }
   public Object pop() {
      return list.removeFirst();
   }
   public static void main(String[] args) {
      Main stack = new Main();
      for (int i = 30; i < 40; i++)stack.push(new Integer(i));
      System.out.println(stack.top());
      System.out.println(stack.pop());
      System.out.println(stack.pop());
      System.out.println(stack.pop());
   }
}

Result

The above code sample will produce the following result.

39
39
38
37

The following is an another example to get elements of LinkedList using top() & pop() methods.

import java.util.LinkedList;
 
public class Demo {
   public static void main(String[] args) {
      LinkedList lList = new LinkedList();
      lList.add("1");
      lList.add("2");
      lList.add("3");
      lList.add("4");
      lList.add("5");
      System.out.println("LinkedList is : ");
      for(int i = 0; i< lList.size(); i++) { 
         System.out.println(lList.get(i));
      } 
   }
}

The above code sample will produce the following result.

LinkedList is : 
1
2
3
4
5