Teammates: CI Test error ?

[nkshschdv]

• Operating System: ubuntu 16.06
• *JDK Version:1.8 *
• Eclipse / IntelliJ Version (if applicable):
• Firefox / Chrome Version (where applicable):

What I was trying to do / What I need help with
The CI Test fails and ended with the following error notifications as shown screen shot:

what could be wrong with the CI Tests?

[whipermr5]

There's a problem with your setup, as shown by how the datanucleus class was not found. Run through settingUp.md, ide-usage.md and development.md again - you might have missed a step.

[HirdayGupta]

@nkshschdv I was getting a similar error in #7534. The solution for me was to run ./gradlew resetEclipseDeps.

[nkshschdv]

What exactly does this command to the Eclipse ? I want to understand the cause .@HirdayGupta

[whipermr5]

@nkshschdv You can find the exact steps here.

[nkshschdv]

It did solved .However, the problem still persists. But it shows now similar but more errors. It tries to use my Firefox for selenium testing but of no use, nothing appeared on the browser.
The errors were enormous , Following i have attached screenshots as they appeared in sequence :

1. 
   
   2.
   
   3.
   
   4.
   

[whipermr5]

See #7437. Do follow the Eclipse steps in the docs exactly. For example, following the first step ./gradlew setupEclipse should have run resetEclipseDeps as the latter task is part of the gradle dependency path of the former. This other error goes away when you follow the step about ORM enhancement.

[nkshschdv]

I'm following the steps for installation again .
I found out that , I have multiple JDK or JRE Installed.as shown in screenshot below.

but i had set up JRE as java-oracle7 in eclipse. Is there any way to know that it is problem or not.Screen shot below

[nkshschdv]

Well, adding the 1.7 openJDK in installled JRE section solved the problem Solved the problem.Belpw is the screen shot of current jdk,

Now, CI Test is working. and only 5 and sometimes 6 test fails but the document says its okay.
Thank You @whipermr5 @HirdayGupta .
cheers !