UserName Checker

/* Programmer     : Dhruv Patel
*  Problem Name   : UserName
*  Used In        : SRM 203
*  Used As        : Division II Level One
*  Thoughts     => 
*  The following code is solved with simple mathematics and iteration which fulfills as the parital solution.
*  The problem was used in SRM 203 competition and here i simply used testCase values as the input for resolving the problem.
*  Here the given username is compared with the existing one to get the match from the data set.If the match occurred it will append
*  the character value at the end of the UserName to generate unique id.However, as char uses ASCII , the last symbol it can 
*  grab are '~'(decimal 126) followed by 'blank space' or 'decimal 127' known as 'DEL'.Description added with a new title.
*/
package username;

public class UserName 
{
   char y ='0';
     String newMember(String[] existingNames, String newName)                //Method declaration
     {
         String ExistCheck[] = existingNames;                                //String array for storing the value
         String Check = newName;                                             //Taking parameter of given name
         for(int j=0;j<=ExistCheck.length-1;j++)                             //Iterating through existingNames from index 0 to last index
       {
             if(ExistCheck[j].equals(Check))                                 //Condition to check the value in the existing name list
             {
                 System.out.println("The value already exist with the value "
                         +ExistCheck[j]+" at "+j+" in the list");
                                             
                  {
                   y++;                                                      //Incrementing y for a match to get unique value.
                   String alpha = newName + Character.toString(y);           //String concatation to generate the unique name
                   System.out.println("The suggested name is "+alpha);       //Output of the new name with character appended
                  
                  }
                 
             }
                 
       }
        return "";
     }
       
    public static void main(String[] args) 
    {
      UserName n1 = new UserName();                                         //Initializing an object of class UserName
      String Exist[] = {"dhruv","jd","nisha"};                              //Existing Names in the Array exist[]
      n1.newMember(Exist,"dhruv" );                                         //Calling method newMember with parameteres [Exist[],"Name"]
      n1.newMember(Exist,"dhruv");
    }
    
}