问题
When I want to see implementation of some interface through F4 (type hierarchy) or ctrl+t (quick hierarchy) or implementation of a method, I can't see it! Problem is, that it works in 90%, but I have few cases when interface and implementation are in same package and eclipse doesn't recognize it via type hierarchy. Any suggestions? Got Eclipse Indigo SR2.
回答1:
I had this same problem and fixed it by deleting the Eclipse index cache files located in .metadata/.plugins/org.eclipse.jdt.core. Delete all .index files and savedIndexNames.txt. Do this while Eclipse is not running and then restart. This fixed the issue for me.
回答2:
Use Eclipse clean mode for deleting caches, look here: How to run eclipse in clean mode? and what happens if we do so?
Sometimes is good to use clean mode to prevent these types of problems.
回答3:
I also had this problem and fixed it. The reason of this problem is that when the eclipse is running, I reinstall the JDK from 1.8 to 1.6. So I close eclipse, install JDK 1.8 again, then it's OK! May it will be helpful for others.
来源：https://stackoverflow.com/questions/16354028/eclipse-type-hierarchy-not-always-working