Tiny Basic Interpreter...

 

class TBinterpreter {

int doing = 0;   char nexToken = '\0';   boolean stopped = false;

TBio InOut = new TBio();   TBprogStore Code = new TBprogStore();   TBstack Stak = new TBstack();   TBvarStore Vars = new TBvarStore();

void error(String msg) {     if (stopped) return; // already did     doing = 0;     nexToken = '\0';     stopped = true;     InOut.printLine();     InOut.putString("** ERROR: ");     InOut.putString(msg);     InOut.printLine();} // error