Annotating Source Code

In this section you will find the basics of IntelliJ IDEA's annotations, and the related procedures:

• @Nullable and @NotNull annotations, which are used, when IntelliJ IDEA supposes that a certain element can become Null.
• @NonNls annotation, which is used to ignore the hard-coded string literals.
• Annotating Source Code Directly, which describes how to add annotations to your source code.
• Inferring Nullity, which describes how to analyze the source code for the possible @Nullable and @NotNull annotations.

  Note

  For using IntelliJ IDEA annotations, make sure that the archive annotations.jar that resides in the lib folder under the IntelliJ IDEA installation, is added to your module.

Besides that, you can also find the following information:

• External Annotations that are stored outside the source code.
• Using External Annotations