where is eclipse dropins folder - eclipse

i just downloaded eclipse 2019-03 (4.11.0), and need to install google-java-format plugin, according to the instruction I need to put the google-java-format Eclipse plugin to eclipse dropins folder, i looked around there is no such a folder, by google around I decided to manually create this folder now the folder directory looks like this
/Users/ddd/eclipse/java-2019-03
/Eclipse.app
/dropins
google-java-format-eclipse-plugin_1.6.0.jar
then i restart eclipse and tried to configure the java code formatter to use google java format:
seems like the plugin was not picked up by eclipse, did I put the dropins folder at the wrong place?

On macOS it is inside the Eclipse.app in the 'Contents/Eclipse' folder alongside the features and plugins folders. In Finder you have to use 'Show Package Contents' on the Eclipse application to see the folder structure inside the app.

Related

What is the dropins folder in Eclipse/JBoss Developer Studio?

I am new to Eclipse and was wondering what is the dropins folder? Where exactly is it(I am on Windows 8)?
Basically i wanted to use this dark UI theme Roger Dudler made (https://github.com/eclipse-color-theme/eclipse-ui-themes) for Eclipse Juno. If you see near the bottom of this link, he says to place the zip folder into the "dropins folder". I have no idea :(
Thanks
dropins directory in eclipse (Path is Eclipse_home/dropins, which is at same level as plugins folder is present in eclipse) is a default watched directory.
Instead of installing plugins you simply put them under this folder (in your case com.github.eclipsecolortheme.themes_1.0.0.201207121019.jar) and restart the eclipse they will be picked up automatically on next start.
Please note that the dropins folder is not supported or encouraged in JBoss Developer Studio.
Plugin providers should really create an update site (or update site zip) containing their plugin bundles, and then users can simply do Help > Install new ... to install correctly using the fully supported p2/Install Manager method of installation.
Note too that Tycho now supports creation of update sites from nothing more than a pom.xml and category.xml file, and you don't need to create features anymore toadd your to the category.xml.
So there's really no reason to provide a plugin w/o wrapping it with the correct p2 metadata.
The dropins folder is if not exists it must be created. The location is the same as the executable of the IDE.

Eclipse - why cant it integrate jars in lib folder into project?

I manually copy needed jar files into my project lib folder. Then, I try to add them to build path via "configure build path option". If i choose "add jar", then the lib folder does not show up in the "to choose from" list. So, I am forced to use "add external jars" option instead. But, that option does not make the jars a part of the project even though they lie in the lib folder. After I restart eclipse 2-3 times, the jars are magically integrated into my project.
Why is eclipse behaving this way ? Why can't I do this easily ?
Please help me.
By default, Eclipse dose not detect file change which come from outside, like copy a jar file in lib folder manually.
So after you copied jar files, you have to refresh the project by pressing F5 while selecting your lib folder. I believe that's why eclipse cannot found your jar files.
If you want to solve this problem once for all, you can active "Refresh using native hooks or polling" via
Window -> Preference -> General -> Workspace
However, this might slow down Eclipse if you have a big project with many many files.
UPDATE
As Bananeweizen mentioned, instead of doing all the copied from outside of Eclipse, you can also copied those file into Eclipse, Package Explorer View for example. This way Eclipse will detect and refresh folder automatically.
The way I was taught to add external jars to an eclipse project is to drag the jar file from explorer into the lib folder in eclipse and then on the dialogue eclipse responds with is choose the copy to option and eclipse imports the jar file and copies it to the lib location at the same time.

Exporting plugin from Eclipse, how can I test it?

If I export a plugin from Eclipse using the 'Export -> Deployable Plug-ins and Fragments' as a jar file. I was wondering how I can then use this plugin in my workspace after I restart Eclipse. Are there any additional steps I need to perform to use the plugin?
Just copy it into the dropins folder of Eclipse. Do not use the plugins folder directly as there is a good chance it won't be picked up.
Put the JAR in a folder named dropins/eclipse/plugins under your target eclipse directory.
An easier method to install it is to select 'install into host' when you export the plugin.
For testing purposes you shouldn't have to use the dropins folder, but instead launch it as an eclipse plugin.
Depending on the type of plugin you have created you may need to click a button or hotkey to activate it.

Manual Install of GWT 2.1.0 in Eclipse Helios 3.6.1

I am behind an intranet that does not have access to the download sites. Assuming I have access to all of the correct zip and jar files. What are the step by step instructions to get Eclipse to the point where I can go to Windows -> Preferences and see the Google entry?
1) I don't have access to the http://code.google.com/eclipse/docs/getting_started.html site because I am on a closed network.
2) I tried using the dropins folder and when I re-open Eclipse and go to Windows->Preferences "Google" isn't listed.
Any ideas?
The official zip-file installation instructions are at http://code.google.com/eclipse/docs/install-from-zip.html
This uses the Eclipse dropins mechanism, which helps Eclipse to pick up the new plugins in a clean way, quote:
... the dropins folder can be used much like the plugins directory was used in the past. A subtle twist on old behavior here is that plug-ins and features added to the dropins folder are properly installed into the system rather than being forced in.
Note:
Make sure, that you extract the zip file into the correct destination. It can easily happen, that it gets extracted e.g. into some subdirectory - so please check twice. You should have the following structure:
eclipse (this is your Eclipse installation folder)
dropins
eclipse (this is the directory created by extracting the zip file)
features
com.google.*
plugins
com.google.*
features
(your already installed features)
plugins
(your already installed plugins)
...
Then (re-)start Eclipse.
Just install the plugin from here and you are set to go.
http://code.google.com/eclipse/docs/getting_started.html
If you get a correct zip file for plugin, you will see "plugins" and "features" as soon as you open the zip file.
If your eclipse is in a location "c:\eclipse", extract the zip file into "c:\eclipse". The files will go into the corresponding folders.
Drop them in the plugins folder

Installing a plain plugin jar in Eclipse 3.5

Since Eclipse 3.5 there seems to be no option to have drop a plugin jar ( not a feature ) in the Eclipse base directory and have it picked up at next startup.
Is there any possiblity to have plain plugins jars installed in Eclipse 3.5?
Since the advent of p2, you should be using the dropins directory instead.
To be completely clear create "plugins" under "/dropins"
and make sure to restart eclipse with the "-clean" option.
Simplest way - just put in the Eclipse plugins folder. You can start Eclipse with the -clean option to make sure Eclipse cleans its' plugins cache and sees the new plugin.
In general, it is far more recommended to install plugins using proper update sites.
For Eclipse Mars (I've just verified that) you to do this (assuming that C:\eclipseMarsEE is root folder of your Eclipse):
Add plugins folder to C:\eclipseMarsEE\dropins so that it looks like:
C:\eclipseMarsEE\dropins\plugins
Then add plugin you want to install into that folder:
C:\eclipseMarsEE\dropins\plugins\someplugin.jar
Start Eclipse with clean option.
If you are using shortcut on desktop then just right click on Eclipse
icon > Properties and in Target
field add: -clean like this: C:\eclipseMarsEE\eclipse.exe -clean
Start Eclipse and verify that your plugin works.
Remove -clean option from Target field.
go to Help -> Install New Software... -> Add -> Archive.... Done.
in Eclipse 4.4.1
copy jar in "C:\eclipse\plugins"
edit file "C:\eclipse\configuration\org.eclipse.equinox.simpleconfigurator\bundles.info"
add jar info.
example:
com.soft4soft.resort.jdt,2.4.4,file:plugins\com.soft4soft.resort.jdt_2.4.4.jar,4,false
restart Eclipse.
This is how you can go about it:
Close Eclipse
Download a jar plugin (let's assume its testNG.jar)
Copy testNG.jar to a certain folder (say C:\Project\resources\plugins)
In your Eclipse installation folder, there is a folder named dropins (could be C:\eclipse\dropins), create a .link file in that folder, (like plugins.link)
Open this file with any text editor and enter this one line:
path=C:/Project/resources/plugins
Save the file and start Eclipse.
And you are good to go!
Please do not forget to change your backward slashes in your plugins folder path to forward slashes on step 5. I used to forget and it would take my time unnecessarily.