Eclipse [ERROR] In most cases you can change the location of your Java [ERROR] installation by Setti
Right-click Project Properties, Java build path-Libraries, JRE System library see if Lib is problematic
If the specified jar is not correct, you can delete the JRE System library (select Remove on the right) and then add the appropriate:
Right Add library--JRE system Library
Add the correct JRE, I tried a few times, then chose alternate ...
The problem may not be exactly the same, but it can provide some ideas:
http://blog.csdn.net/zhouyingge1104/article/details/41696747
Http://www.cnblogs.com/zhanjindong/p/3390844.html#top
Eclipse has been building workspace, and if the project is a lot, it will take a long time
Turn off automatic compilation
What to do: Project--Build automatically
Reference: http://blog.163.com/shadow_wolf/blog/static/18346909720145279519222/
Eclipse Issues Summary