How to Identify Characters

I have a class that takes a String and looks at the first character and if the character is empty ("") it returns me the first letter.

public String textReturn(String x){
   int v1 = 0,v2 = 1;
   String a =" ";

   while(true){

      if( x.substring(v1,v2).equal(" ")){

         a =  x.substring(v1,v2);
         break;
      }else{
         v1++;
         v2++;
      }
   }

  return a;
}

But this text comes from an EditText and if in it I give an enter account as if it were a character, I wanted to know how to skip the line break or if it is also a character type String a.equal (b /)