Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Java DBCP "java.lang.NullPointerException"

Posted on 2010-08-20
10
Medium Priority
?
340 Views
Last Modified: 2013-12-29
When i compile the test.java it return

Failed to finalize JDBC task:
java.lang.NullPointerException
      at Test.main(Test.java:38)

i need experts help. thanks


Test.java
ConnectionManager.java
Configuration.java
NewFile.xml
0
Comment
Question by:aaronyeo22
  • 4
  • 4
  • 2
10 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 33488616
Check your log
0
 
LVL 92

Expert Comment

by:objects
ID: 33489153
you never initialise your ConnectionManager
add this before you try and get a connection

ConnectionManager manager = new ConnectionManager(new Configuration());
0
 

Author Comment

by:aaronyeo22
ID: 33491245
where to check my log. CHEJ


conn = ConnectionManager.ds.getConnection(); Savant
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 86

Expert Comment

by:CEHJ
ID: 33491456
>>where to check my log. CHEJ

Wherever your logging system is configured to print (impossible to tell from here)
0
 

Author Comment

by:aaronyeo22
ID: 33492219
i used window 7. So what to do now

thanks
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 33492507
>>i used window 7.

That's not relevant
0
 

Author Comment

by:aaronyeo22
ID: 33492579
So, what should i do now. I really need to solve this problem.


thanks
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 33492675
The first thing you should do is to find out about your logging, as i mentioned. What errors are you getting now?
0
 

Author Comment

by:aaronyeo22
ID: 33492919
is it the CBS log file
0
 
LVL 92

Accepted Solution

by:
objects earned 2000 total points
ID: 33493265
did you try my suggestion, that should fix your error
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

After being asked a question last year, I went into one of my moods where I did some research and code just for the fun and learning of it all.  Subsequently, from this journey, I put together this article on "Range Searching Using Visual Basic.NET …
Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
Viewers learn how to read error messages and identify possible mistakes that could cause hours of frustration. Coding is as much about debugging your code as it is about writing it. Define Error Message: Line Numbers: Type of Error: Break Down…
Viewers will learn about the regular for loop in Java and how to use it. Definition: Break the for loop down into 3 parts: Syntax when using for loops: Example using a for loop:
Suggested Courses

877 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question