Suppressing Compile Warnings with Java Annotations


If you’ve used Java 1.5 Generics much then you’re probably familiar with the following compile warning: “Type safety: The expression of type List needs unchecked conversion to conform to List<String>” or similar. It turns out there’s a rather simple solution with annotations to ignore this problem:


A couple other possible uses of the annotation that might be of interest are:


These are compiler specific, so you may want to check out the full Eclipse list, which is a bit lengthier than Sun’s 7 options (all, deprecation, unchecked, fallthrough, path, serial, and finally).

Also, multiple statements can be combined into one as follows:

@SuppressWarnings({“unchecked”, “deprecation”})

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