sorting map in java example code

//map in java example code (using enumeration and iterator):

public class mapexample

{

public static void main(String vals[])

{

try

{

//creating vector object

java.util.Vector v=new java.util.Vector();

//adding elements to vector

int primitive=10;

Integer wrapper=new Integer(20);

String str="Satya";

v.add(primitive);

v.add(wrapper);

v.add(str);

v.add(2,new Integer(30));

System.out.println("the items in vector are: +v");

System.out.println("the number of items in vector are (size): "+v.size());

System.out.println("the item at position 2 is: "+v.elementAt(2));

System.out.println("the first item of vector is: "+v.firstElement());

System.out.println("the last item of vector is: "+v.lastElement());

System.out.println("now removing item at position 2");

v.removeElementAt(2);

//by using enumeration

java.util.Enumeration e=v.elements();

System.out.println("\nthe items in vector are (througth enumeration): "+v);

while(e.hasMoreElements())

{

System.out.println("the item is: "+e.nextElement());

}

//by using iterator

java.util.Iterator itr=v.iterator();

System.out.println("\nthe items in vector are (througth iterator): ");

while(itr.hasNext())

{

System.out.println(itr.next()+" ");

}

}

catch(Exception e)

{

 e.printStackTrace();

}

}

}

output: