HTTP Status 404 Tomcat Apache & tomcat server location property is greyed in Eclipse

About the Http Status 404 Tomcat Apache, please refer to this website http://stackoverflow.com/questions/20398738/http-status-404-tomcat-apache

If do the above operations, maybe has a problem about " tomcat server location property is greyed in Eclipse".

About this problem, please refer to this website "http://stackoverflow.com/questions/4919846/why-tomcat-server-location-property-is-greyed-in-eclipse".

With these two operations, the http status 404 disappears.