I am test Google App Engine in my Eclipse, but this error appears always if I add .jsp file. And when I run/debug the project, the error “Error running javac.exe compiler” shows up.
How to solve: use JDK instead of JRE in your Eclipse. Go to Eclipse Menu: Window > Preferences > Java > Installed JREs > Add or check JDK (if you did not config JDK before, add it. Otherwise, check it.)
Details error message: