Tiny Basic Interpreter...

 

class TBinterpreter {

...

boolean factor() {     if (number()) return true;     if (var()) {       Stak.push(Vars.get(           (char)Stak.pop()));       return true;     if (nexToken == '(') {       nexToken = Code.getChar();       if (!expression())         error("Expression expected");       else if (nexToken == ')') {         nexToken = Code.getChar();         return true;}       else error("Missing right paren");}     return false;} // factor