Solved

Java DBCP "java.lang.NullPointerException"

Posted on 2010-08-20
10
336 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 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
Independent Software Vendors: 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 500 total points
ID: 33493265
did you try my suggestion, that should fix your error
0

Featured Post

Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

Question has a verified solution.

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

An old method to applying the Singleton pattern in your Java code is to check if a static instance, defined in the same class that needs to be instantiated once and only once, is null and then create a new instance; otherwise, the pre-existing insta…
Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
This tutorial explains how to use the VisualVM tool for the Java platform application. This video goes into detail on the Threads, Sampler, and Profiler tabs.
Suggested Courses

623 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