@@ -0,0 +1,462 @@
+%0A/*%0A *   Calccedo Library%0A *   hint this code under Apache License%0A */%0A%0A%0Apackage com.precious.calccedo.handlers;%0A%0A%0A/**%0A *%0A * @author Ibrahim Abdsaid Hanna%0A *         ibrahim.seniore@gmail.com%0A */%0A interface Handler %7B%0A            %0A    String calculate(String formula);%0A    boolean isNumber(char c);%0A    boolean isNumber(String quote);%0A    boolean initValidation(String formula);%0A    String optimizeFormula(String formula);%0A%0A    %0A    %0A    %0A %7D%0A      %0A    %0A    %0A  %0A%0A

Create Handler.java