All of a sudden my 12.1.4 will not recognize basic java classes like java.lang.String or java.io.File.
For example, import java.io.File These classes are now highlighted in red and if I F3 to "View declaration", I get cannot Find Declaration to go to.
If I go to File/Settings/Java Compiler its properly pointing to java 1.5.
If I go to File/Project Structure it's properly pointing to project SDK1.5.
Any thoughts recommendations? This should be the most simple thing in the world, I don't know why all of a sudden the GUI is showing me everything in red.