Thread: today is 1st day with java and i am screwed...

hi.. I am Sumit from Kolkata
I am a student...
today is my 1st day with java and i am trying to run a simple programm in karel world..
my code is

import stanford.karel.*;
 
public class CheckerboardKarel extends SuperKarel {
 
	// You fill in this part
	public void run() {
		move ();
		pickBeeper ();
		move();
		turnLeft();
 
	}
}

but when i click the run button the error poped in console tab is

Exception in thread "main" java.lang.NullPointerException
at acm.program.Program.main(Program.java:917)
at stanford.karel.Karel.main(Karel.java:202)



i tried a lot to figured it out but i can't did..
i am using "eclipse" software..

untitled.JPG

screenshot of my monitor is attached...

someone help me please...

I'm going to move this thread to a more appropriate forum. Please read this: http://www.javaprogrammingforums.com...e-posting.html. You might also want to use a more informative title.

Also, you really haven't given us enough information to go on. Look at line number 917 in Program.java. Something is null there. Use print statements to figure out what it is. If you still have questions, post an SSCCE (only a few lines, certainly not 917 lines) demonstrating the problem.

Ugh, please don't post multiple copies of the same question. I've merged your duplicate posts.

Originally Posted by sumit043020701

thanks Kevin!
can you please tell me how to create new Karel world in eclipse..

What? How would we know that? I have no idea what a "Karel world" is, and you haven't provided what you've been asked to provide. Please see the link in my signature on asking questions the smart way. If you ask a more specific question, we'll be happy to help you.