Eclipse Compilation Error

I imported some JTB and JavaCC generated files into Eclipse and there is one line giving me an error - the first line (a comment) most of the class files says "The type java.lang.Objec开发者_运维知识库t cannot be resolved. It is indirectly referenced from required .class files" How do I fix this?

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Have you tried removing and adding the JRE in your project?

1. Select Project -> Properties
2. Select Java Build Path
3. Navigate to the Libraries Tab
4. Remove the JRE
5. Click Add Library and add the default JRE again

PS: Project -> Clean can be very useful, too.