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What variable has the null value?

Where does the program assign that variable a valid value?

Post the source code for the line with the error
and the source code that assigns that variable a...

There is a variable at line 136 that has a null value when that statement is executed. Look at line 136, find the variable with the null value (use a println to print out the values if needed)
and...

If you need help with the error, please copy the full text of the error message and paste it here.
I do NOT go to links posted on the forum.

Without that error message, there is no way to know where the error is happening.

How are you executing the program? How does it display the error message?

On windows: To copy the contents of...

Please copy full text of error message and paste it here. It should show where the error happened.
Here's a sample:


Exception in thread "main" java.lang.NullPointerException
at...

Waiting.

Are you saying the project is done?

If you are still getting the error: Please copy the full text of the error message and paste it here.

Please copy the full text of the error message and paste it here. It has important info about the error.

Please edit your post and wrap your code with


<YOUR CODE HERE>

to get...