Eclipse Java project error: cannot resolve declaration in swing

Question

I get the following error in Eclipse:

DISPOSE_ON_CLOSE cannot be resolved something.java javadir/src/ line xxxx Java Problem

DISPOSE_ON_CLOSE is in javax.swing but even when I add import javax.swing.*; it doesn't work.

ANy ideas?

Answer 1

Start with a fully qualified reference:

javax.swing.WindowConstants.DISPOSE_ON_CLOSE

then when you have time, read this section on static import

Answer 2

DISPOSE_ON_CLOSE is not directly in javax.swing.*, but in WindowConstants interface, so you need to use WindowConstants.DISPOSE_ON_CLOSE.