JAVA STRING CHARAT LENGTH TOSTRING SUBSTRING

JAVA STRING CHARAT LENGTH TOSTRING SUBSTRING

import java.util.*;
class Test
{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        String name;
        System.out.print("\nENTER ANY NAME: ");
        name=sc.nextLine();
        String ns2=(name.charAt(0)+". ");
        String ns="";       
        int i=0;
        int lp=0;
     
        int len=name.length();
        while(i<len)
        {   
            char n=name.charAt(i) ;
            String s=Character.toString(n);
            if (s.equals(" "))
            {
                ns=ns+ns2;
                ns2=(name.charAt(i+1)+". ");
                
                lp=i;
            }
            i++;
                
        }
        ns=ns+name.substring(lp+1, len);
     
        System.out.print("\n NAME: "+ns+"\n" );
        
        
    }
}