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Am running Eclipse on Mac OS X but for some crazy reason it just can’t find my Java base classes like ArrayList etc… I just the Install JRE under Preferences and there is a valid JDK that got all the classes correct like point to classes.jar etc… Any idea what can be wrong? And yes I did do a Clean, it just can’t build.
Eclipse Helios, latest Java 6, Snow Leopard Mac OS X
It is likely that your Eclipse uses the Java JRE and not the JDK. You need to point Eclipse to where your JDK is installed.
Go to Preferences -> Java -> Installed JREs and Add your JDK directory. Then make sure that you uncheck (or remove) the previous JRE. That should allow you to see the base classes.