Netbeans/Java cannot connect to the internet

Posted on 2013-01-11
Last Modified: 2013-01-17
Dear Experts,

I have installed Netbeans 7.2.1 on my offices pc and have a problem connecting to the internet. I cannot make any connection, for example i cannot check for updates, when i do i get the error:
Check your proxy settings or try again later. The server may be unavailable at the moment. You may also want to make sure that your firewall is not blocking network traffic.

Open in new window

after searching google i added the following environment variable to my pc:
variable name: _JAVA_OPTIONS
and set the value to:

however this didn't solve my problem,

does anybody have a solution for this???

Kind regards,

Mark Vrenken
Question by:MarkVrenken
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
  • 3
  • 2
  • 2
LVL 35

Expert Comment

ID: 38766584
Do you need a proxy to connect to the Internet? ie. is one set in your browser?
LVL 86

Assisted Solution

CEHJ earned 250 total points
ID: 38766591
You will find, if you can normally connect to the Internet, that a proxy has probably been set by your sysadmins. You need to set that same proxy in the Java configuration 'applet', which is available in Control Panel in Windows.

Author Comment

ID: 38766842
hi CEHJ and mccarl,

thanks for your responses:)

Indeed i have a proxy configured. But this is already set up in my browser, and when i select the option use browser proxy, the issue isn't solved. also tried manualy insert the same config.pac as in my browser, this didn't solve my issue either. I figured out that I run a 64-bit windows and had java 32 bit installed as well as an older version of java 64 bit. Now updated to the newest version of java 64 bit but still didn't solve my issue. Any other things i can try?


Mark Vrenken
Industry Leaders: 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

ID: 38767761
What did you do in the Control Panel applet?
LVL 35

Accepted Solution

mccarl earned 250 total points
ID: 38768531
Hi Mark,

I have always had issues with Java apps (Netbeans and Eclipse) and our proxy config at work. As well as trying CEHJ's suggestions, I would try to set the proxy options in Netbeans explicitly, ie. find the actual proxy host and port number from your config.pac file and enter those into Netbeans.

Author Comment

ID: 38786978
Hi mccarl and CEHJ,

Thank you both for your help! It was indeed the proxy config that was the problem! so now my netbeans has a connection to the internet:).
The next horde will be configuring my ODataConsumer(OData4j) with the proxy settings to get a connection established. But i am happy to have eliminated the first roadblock!

Kind regards,

LVL 86

Expert Comment

ID: 38787061
I'll test it when i get time, but i'd be surprised if Netbeans did not observe proxy settings already at force for the jvm

Featured Post

Creating Instructional Tutorials  

For Any Use & On Any Platform

Contextual Guidance at the moment of need helps your employees/users adopt software o& achieve even the most complex tasks instantly. Boost knowledge retention, software adoption & employee engagement with easy solution.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
by zero exception 10 80
import as existing maven project 3 76
passing enum to a method 4 48
junit initializtion error 2 18
Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
Introduction This article is the first of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article explains our test automation goals. Then rationale is given for the tools we use to a…
Viewers learn about the “while” loop and how to utilize it correctly in Java. Additionally, viewers begin exploring how to include conditional statements within a while loop and avoid an endless loop. Define While Loop: Basic Example: Explanatio…
This tutorial covers a practical example of lazy loading technique and early loading technique in a Singleton Design Pattern.
Suggested Courses

738 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