Java palindrome checker

What is palindrome ?
-Palindrome is a word or sequence that reads the same backwards as forwards.


For example :
MADAM

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COMPLETE SOURCE CODE FOR : JavaPalindromeChecker.java
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import java.util.Scanner;
import java.util.StringTokenizer;

public class JavaPalindromeChecker
{
public static void main(String[]args)
{
System.out.println("Put your text below");
Scanner sc=new Scanner(System.in);
String a=sc.nextLine();
StringTokenizer st=new StringTokenizer(a);
String b="";
while(st.hasMoreTokens())
{
 b=b+st.nextToken();
}
int stringLength=b.length();
String benchMark="Palindrome";
if(stringLength%2!=0)
{
 int c=((stringLength-1)/2);
 for(int i=0;i<c;i++)
 {
  char before=b.charAt(c-(i+1));
  char after=b.charAt(c+(i+1));
  if(before!=after)
  {
   benchMark=new String("Not Palindrome");
  }
 }
}
else
{
 int c=stringLength/2;
 for(int i=0;i<c;i++)
 {
  char before=b.charAt(i);
  char after=b.charAt(stringLength-(i+1));
  if(before!=after)
  {
   benchMark=new String("Not Palindrome");
  }
 }
}
System.out.println(benchMark);
}
}

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JUST COMPILE AND EXECUTE IT
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