public c l a s s
LogoProgram {
public s t a t i c void
main( String [ ] args ) {
Program p =
new
Program("Square" ) ;
p . addInstruction ("REP" , 4);
p . addInstruction ("FWD" , 100);
p . addInstruction ("ROT" , 90);
p . addInstruction ("END" , 1);
i f
(p . isCorrect ()) {
p . start ( ) ;
while
( ! p. hasFinished () ) {
Instruction instr = p. getNextInstr ( ) ;
System . out . println ( instr . info () ) ;