Eclipse Intro error

Problem : Error message Windos "Intro error " prompted during initialistion OF "Eclipse IDE for C / C++ Developers".

Could not find a valid configuration for intro Part: intro element" in
extension: org.eclipse.ui.intro in Bundle: org.eclipse.ui.intro.universal

Check Error Log view for details

CAUSE:
No JAVA_HOME is exported.

Solution:

1. download the J2SE from java.com, choose the tar.gz file instead of the auto extracted file.
2. Export the JAVA_HOME