Tiny Basic Interpreter...

 

class TBinterpreter {

...

boolean statement() {     int temp, test;     nexToken = '\0';     switch (Code.getCommand()) {     ...     case cm_if:       if (!expression()) {         error("We need a value");         return false;}       test = 0;       if (nexToken == '<') test--;       else if (nexToken == '>') test++;       else if (nexToken != '=') {         error("Compare expected");         return false;}       nexToken = Code.getChar();       if (!expression()) {         error("We need 2nd value");         return false;}       if (Code.getCommand() != cm_then) {         error("Missing 'THEN'");         return false;}       temp = Stak.pop();       if (test==0) {         if (Stak.pop()==temp)           return statement();}       else if (test<0) {         if (Stak.pop()<temp)           return statement();}       else if (Stak.pop()>temp)         return statement();       return true; // ignore rest of line       break;     ...} // switch     return true;} // statement