====== Eclipse ======

===== Configuration =====

==== Migrate launch configurations =====

To migrate launch configs between different workspaces simply copy the .launch files from:

<code>
/eclipse-workspace/.metadata/.plugins/org.eclipse.debug.core/.launches
</code>

==== Organise Imports ====

  * Automatically organise imports: Ctrl+Shift+O
  * Static import: Ctrl+Shift+M

To exclude annoying packages or classes when doing automatic organisation of imports with Ctrl+Shift+O create a a "Type Filter" under ''Windows -> Preferences -> Java -> Appearance -> Type Filters''.

My current list:
<code>
scala.*
java.awt.*
junit.*
org.joda.*
</code>

===== SVN support =====

As of 2018 the subversive project seems to be dead, so we must use subclipse. Install it from the Eclipse Marketplace and then:

<code bash>
sudo apt install libsvnclientadapter-java
</code>

Specify the folder where ''libsvnjavahl-1.so'' is located as library path in ''eclipse.ini'' (the line must come directly after ''-vmargs'')

<code>
-vmargs
-Djava.library.path=/usr/lib/x86_64-linux-gnu/jni
</code>

see also https://github.com/subclipse/subclipse/wiki/JavaHL-on-Linux

===== Troubleshooting =====

see [[kubuntu|KDE 5 / Kubuntu Tipps &amp; Tricks]]

==== Scroll bars hide content ====

Start with:
<code bash>
GTK_OVERLAY_SCROLLING=0 
</code>

This will permanently reserve place for the scroll bars and no content will be hidden.

See https://bugs.eclipse.org/bugs/show_bug.cgi?id=519728

==== Scroll bars too small ====

Using Kubuntu 20.04 I don't like the miniscule scroll bars that slightly widen when hovering over them. Setting a min size works as follows:

Edit .config/gtk-3.0/gtk.css and add these lines:

<code>
.scrollbar.vertical slider, scrollbar.vertical slider {
    min-width: 7px;
}
.scrollbar.horizontal slider, scrollbar.horizontal slider {
    min-height: 7px;
}
</code>

==== Autocompletion not working properly =====

This happens sometimes when upgrading a workspace to a new version of Eclipse (most recently to me when upgrading vom 2018.09 to 2018.12).

Window->Preferences->Java->Editor->Content Assist->Advanced

Now make sure the following are all ticked in the top and bottom sections:

  * Java Non-Type Proposals
  * Java Proposals
  * Java Type Proposals

Apply the changes and then close and re-open your project and it will build the autocompletions which will then become available when you hit Ctrl-Space.

Source: https://www.chrisnewland.com/solved-eclipse-java-autocomplete-not-working-259