Hi,

 

Does anyone know what this error message means?

I get this error when I try to close a network input stream:

java.lang.NullPointerException: Ticking memory connection

	at com.chef.mod.JavaGetUrl.main(JavaGetUrl.java:115)[/Code]

 

Java class file: http://pastebin.com/p2PQs6jJ. Based on this example: http://alvinalexander.com/java/edu/pj/pj010011

 

Thanks.

 

Kander18

You're trying to access a field or call a method of a

null

value on line 115 of

JavaGetUrl

, which causes Java to throw a

NullPointerException

. The message of the exception isn't relevant in this case, only the type and stack trace tell you what went wrong.

 

is

is

null

, probably because

URL#openStream

threw an exception. You should check if it's

null

before trying to call

close

on it. You may also want to use a try-with-resources statement to auto-close your

InputStream

.