what does cross sign means in eclipse

Question

I have a project opened in eclipse, its a java web application. In eclipse I can see that there is a red cross sign with my project name, On expanding my project I can see many files have the same red cross sign.

What does this cross sign means in eclipse? Is it showing some compilation error? if error how can I see the error? Also what does that triangle icon means?

Please check the screenshot above and see the cross and triangle signs...

Answer 1

The cross on red ground means an error in this file, while a question mark on yellow ground indicates a warning. You can see them in the Problems tab in eclipse:

You can customize what is treated as an error and as a warning under Window -> Preferences and then search for errors/warnings (Also take a look at the docs: Java Compiler Errors/Warnings Preferences

In addition to the markings on the resources, you can see errors and warnings in an open file next to the scroll bar: