Because NonNull states a property of the variables value rather than of the variable itself, it should be a type annotation. I was using the more general (my own opinion) annotations from javax.annotation. For futureproofing, the most important factor to consider is whether the annotation is a type annotation or a declaration annotation. It would probably be a better practice to use some existing annotation library, like eclipse one or findbugs one, than defining your own, but I didn't try them and I don't know which of them supports the so I can't suggest any specific library. By default, Intellij will use their own annotations from. and add the annotation you defined to the NotNull annotations section using the green cross button as described here. Go to Settings -> Build, Execution, Deployment -> Compiler, press Configure annotations. * because IDEA does not allow using it's for java 7 compatibility // this is the parameter that was introduced in java 8Ĭlass exception() default Exception.class Ģ. Click this button to add an annotations package to the list. This list shows NotNull annotations defined in the project. The selected annotation is marked with the right arrow. * you have to define your own NonNull annotation to be able to mark a generic as not null Click this button to select the annotations package used for code generation. 19 I recently cloned the ics-openvpn project: But when I opened the project, it gave me some errors considering these lines not being resolved: import import I tried searching it on the internet, but I got no clear answer. Annotation attributes CanBeNullAttribute. To use these attributes in your code, you need to reference JetBrains.Annotations as described in the Annotations in source code section. When you annotate an element with NonNls, localization tools will skip this element and strings inside it. The JetBrains.Annotations framework provides a number of attributes described below. Define a NonNull.java annotation: package It is an annotation that indicates that an annotated code element is a string which is not visible to users, which doesn’t require localization, and which doesn’t contain strings requiring localization. For anyone reading this today, here is a solution to Tom's problem:ġ.
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