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What does the red exclamation point icon in Eclipse mean? There are lots of different search results on the Internet about "red exclamation point icons" and "red exclamation mark decorators" and "red bang icons," no doubt because lots of plugins and programming-related tools use red exclamation point icons. So, to be clear, this is the one I mean:
It appears as a decorator on projects in the Package Explorer view.
In my case, the icon went away when a missing build path variable was filled in. I'm using MyEclipse 9.0, but I don't think this is MyEclipse-specific. Other people on the Internet have reported that it has to do with other issues, including Subclipse, the .svn folder and moving files between working copies.
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Why is the red exclamation mark in outlook described as meaning "High Importance" when it is clearly meant to mean (and is usually taken as meaning) "High Priority".
The explanation is most likely to be found in the Problems view (use Window -> Show View). It can be missing Jars (referenced jar isn't there), or a lib in the build path (right-click on your Project -> Properties -> Java Build Path), or other.
According to the documentation:
Decorates Java projects and working sets that contain build path errors
In practice, I've found that a "build path error" may be caused by any number of reasons, depending on what plugins are active. Check the "Problems" view for more information.
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