I am using Eclipse IDE (version 2018-12 at the time of writing) on Debian 9 Xfce and the issue with it is that the Eclipse editor windows would flicker around the edges. Sometimes so much so that it's impossible to type inside it. Here's how I fixed it:

First check the value of GTK_IM_MODULE in your environment by executing

echo $GTK_IM_MODULE

In my case the output was "xim". But Eclipse expect it to be "ibus". So enter the following command in a terminal session to set it to the value.

Subclipse is an Eclipse Team Provider plug-in providing support for Subversion within the Eclipse IDE. Installing Subeclipse plug-in in Eclipse running on Ubuntu (or any other Linux distribution) is a little more complex than on win-32 platform. You need to install an additional package that contains the JavaHL binaries. To install Subeclipse, follow the below simple steps:

1.Go to Ubuntu Software Center and install the below package.

libsvn-java

2.Note the installed version of the above package.

I upgraded my Ubuntu from 12.04. Eclipse 3.7 with Subclipse 1.6 was installed in 12.04. Now after upgrading to 13.04, after I start Eclipse and synchronize my project with the repository, it throws the error message: "Incompatible JavaHL library loaded. 1.6.x or later required."

Possible reason: libsvn-java is needed to be installed in Ubuntu in order to make SVN work in Eclipse. The installed version in Ubuntu 12.04 was 1.6 as far as I remember. But after upgrading to 13.04, the libsvn-java version was also upgraded to 1.7. But the version of Subclipse that is compatible with libsvn-java 1.7 is Subclipse 1.8.