I am getting errors from Eclipse Indigo running on Windows 7 Ultimate. For each of the following items:
Android SDK content loader
Building workspace
Initial
Just close the Eclipse or STS and restart it again. This may fix this error.
Just change the following values at "eclipse.ini" file to the following:
-Xms1024m
-Xmx2048m
Note:
Sometimes the issue is with the version of the Java installed. I was facing a similar issue when trying to start Spring Tool Suite on my Ubuntu 16.04. I had java 9 installed on my machine. I changed it to java 8. And it started working.
In my case "MySQL service" is disabled. And I got same error.
So if you are using MySQL then check for it.
Press win+R
then write services.msc
and hit enter. Search for MySQL
service. Start the service.
I would just like to add, that simply closing and reopening eclipse has always worked for me with this type of error.
In my case, I restarted my eclipse IDE without deleting/editing my workspace or .metadata folder. Error "An internal error occurred during: "Initializing Java Tooling". java.lang.NullPointerException" is gone and Eclipse just working good.