Updating Linked List and Vector Maximum and Binary in java pro

Updating Linked List

import java.util.LinkedList;

public class MainClass 

{

   public static void main(String[] a) 

   {

      LinkedList officers = new LinkedList();

      officers.add("B");

      officers.add("B");

      officers.add("T");

      officers.add("H");

      officers.add("P");

      System.out.println(officers);

      officers.set(2, "M");

      System.out.println(officers);

   }

}

Vector Maximum

import java.util.Collections;

import java.util.Vector;

public class Main

 {

   public static void main(String[] args) 

   {

      Vector v = new Vector();

      v.add(new Double("3.4324"));

      v.add(new Double("3.3532"));

      v.add(new Double("3.342"));

      v.add(new Double("3.349"));

      v.add(new Double("2.3"));

      Object obj = Collections.max(v);

      System.out.println("The max element is:"+obj);

   }

}

Vector Binary

import java.util.Collections;

import java.util.Vector;

public class Main 

{

   public static void main(String[] args) 

    {

      Vector v = new Vector();

      v.add("X");

      v.add("M");

      v.add("D");

      v.add("A");

      v.add("O");

      Collections.sort(v);

      System.out.println(v);

      int index = Collections.binarySearch(v, "D");

      System.out.println("Element found at : " + index);

   }

}