Develop Reference

Eclipse not able to recognise annotation

I have checked out a gradle project in eclipse but it is not able to recognise any annotation.Foe every annotation in each file it says
Configuration cannot be resolved to a
type
where configuration is annotation.
and all imports corresponding to annotation are also failing with following error:
The import org.springframework cannot be resolved
Entire project with all files is filled with error. But there is no such problem like this in Intellij for same project. Which setting am I missing for Eclipse ?
gradle build works fine although

From my experience, I did not see a checkout option in Eclipse for a Gradle project. I'm using Eclipse version 2019-06 (4.12.0). You need to check out the project in to your local file system and then do an import of the existing project as a Gradle Project.
Things to Note:
Make sure you have the Gradle buildship plugin installed in your Eclipse. (The plugin I use. Buildship: Eclipse Plug-ins for Gradle, provided as part of the Gradle Platform.)
Go to File --> Import. When a pop up box opens, scroll down to Gradle and select Existing Gradle project.
This Way Eclipse recognises the Gradle Project.

How to install a specific version of JRebel plugin in Intellijidea

I want to install a previous version of Jrebel plugin into the Intellij, in the Intellij plugin store, the latest JRebel version is 6.1.x but i need to install 5.6.0. I tried downloading "jrebel-5.6.0-nosetup.zip"
and installing it by option "Install plugin from disk", but shown me the error as in below screenshot:-
Secondly, i tried to install the latest JRebel from repository and after that changing the Jrebel.jar path from plugin settings but that also shows me the error while activating it from server as "License server 3 or newer required."
I've this 5.6.0 JRebel working in eclipse also activated from my license server.
Isn't there any way to directly download and install any specific version of plugin. I also followed few stack overflow questions for the same, but they even didn;t have specific answer.
One of those is this.

You have downloaded the binary distribution of JRebel, which is not an IDE plugin.
You can download the exact version of JRebel plugin for IntelliJ IDEA from the plugins portal and install from disk (the same way as you have tried with "nosetup" ZIP.
Alternatively, you can also do the following:
Install latest JRebel plugin from plugins repository Unzip
jrebel-5.6.0-nosetup.zip to file system In
Settings->JRebel->Advanced, specify custom jrebel.jar location

Jmeter with Eclipse

I'm learning how to build Jmeter with Eclipse.
I followed some online steps and downloaded Jmeter binary and source files, unzipped them into the same directory, created a java project in eclipse and used ant build but when i build i got the following error
\workspace\apache-jmeter-2.11\build.xml:801: Class not found: javac1.8
I'm using JRE8, JDK1.8 and ant 1.9.4.
Saw some similar post with answers saying that this is an issue with ant version < 1.9 but i'm already using ant 1.9.4.
Help please.

As that is a problem encountered with versions of Ant which are not compliant with Java 8, I suggest you check your Ant configuration. Go to your Eclipse settings and check it. Then, check your project settings, maybe you have project-specific settings which override your general Eclipse settings.
In the settings, you can choose which Ant install you want to use. By default, Eclipse is using it's own, which is probably not the last available. If you have installed Ant 1.9.4, you should select "External installation" or something, with the version of Ant you installed.
More infos here: http://help.eclipse.org/juno/index.jsp?topic=%2Forg.eclipse.platform.doc.user%2Ftasks%2Ftasks-ant-version.htm

IntelliJ Plugin Dev - Cannot prepare plugin for deployment

I am trying to download the source of an IntelliJ IDEA Plugin (for JBehave integration) from a github repo, and basically build it into a jar, which I can distribute to my team (which they can then drop into their plugin directory for installation).
What I have done so far:
configured the IDEA SDK (I downloaded the source for latest version of the community edition and built it)
Downloaded the source from the repo via zip, as well as git clone
Created the project from scratch, as well as trying to "Import"
Ran mvn install in the command line, ran "Make Project"
Then I looked for the command (according to this tutorial) to
Build | Prepare Plugin Module for Deployment.
As you can see, the command is not there.
What am I doing wrong? I have tried fiddling with the project/module settings ad nauseum and I feel like I'm getting nowhere.

It seems like I was using an outdated version of IntelliJ (10.5). I ran IntelliJ Idea 12, and I created the project IntelliJ Platform Plugin (as #CrazyCoder suggested). From there I was able to build it.

Facing issues installing m2e maven plugin for Eclipse Juno

I installed JUNO Eclipse and then wanted to get the maven plugin for eclipse. After some searching I got to know that I can install the plugin using eclipse market place. So I searched the plugin and installed it successfully but when I restarted eclipse, I cannot see Maven option when I right click on any project. When I click on WINDOWS--> PREFERENCES , I can see the Maven option there. It means, maven got installed but not sure if completely.
I reinstalled it again but still no luck. Can anyone help?
FYI, I am using maven 3.0.4

If your project is still a standard Java project, then you have to enable Maven for this project. You can do this by right-clicking on the project, then choose Configure -> Convert to Maven project. Then you have to type group id, artifact id etc. and the pom.xml is created for you.

You need to make sure you have installed the Java JDK and add it to the Preferences -> Java -> Installed JREs.