Validate mobile number, Java

Validate mobile number

//Title of this code
//'main' method must be in a class 'Rextester'.

import java.util.*;
import java.lang.*;

class Rextester
{  
    public static void main(String args[])

{
String destination="  + + ++  919090909090";
        destination.trim();
        
        destination= destination.replaceAll("\\s","");
        while(destination.startsWith("+"))
        {
            destination=new String(destination.toString().substring(1));
        }
         if (destination.matches("^\\s*\\d+\\s*$")) {
             
                     System.out.println("match");
             if (destination.length() == 10 || destination.length() == 12) {
            System.out.println("lenght correct ");
                  if ((destination != null)) {
                if (destination.matches("9{1}1{1}[7-8-9]{1}[0-9]{9}")) {
                     System.out.println(" correct number");
                    
                } else if (destination.matches("[7-8-9]{1}[0-9]{9}")) {
                
                     System.out.println("correct num");
                } else {
                     System.out.println("not correct ");
                }
            } else {
              System.out.println("null ");   
            }
                 
                 
        }else
             {
                  System.out.println("lenght not correct !");
             }
         }
        else
        {
             System.out.println("Char not allowed !");
        }
        
        
        
                     System.out.println("de :"+destination+" length : "+destination.length());
        
       
    }
}


run \| edit \| history \| help	0