String Reverse Program

 public class ReverseProgram{
    public static void main(String[] args) {
        String a="Siva";
        for(int i = a.length() - 1; i >= 0; --i)
    {
        System.out.print(a.charAt(i));
    }

}
}
                                  (or)

public class String_reverse
{
public static void main(String[] args)
{
Scanner sc=new Scanner(System.in);
System.out.println("Enter String :");
String n=sc.nextLine();
String rev="";
int len=n.length();
for(int i=len-1;i>=0;i--)
{
rev=rev+n.charAt(i);
}
System.out.println("Reverse of Given String is :");
System.out.println(""+rev);
}
}