Module java.base
Package java.lang

Annotation Interface SuppressWarnings

@Target({TYPE,FIELD,METHOD,PARAMETER,CONSTRUCTOR,LOCAL_VARIABLE,MODULE}) @Retention(SOURCE) public @interface SuppressWarnings
Indicates that the named compiler warnings should be suppressed in the annotated element (and in all program elements contained in the annotated element). Note that the set of warnings suppressed in a given element is a superset of the warnings suppressed in all containing elements. For example, if you annotate a class to suppress one warning and annotate a method to suppress another, both warnings will be suppressed in the method. However, note that if a warning is suppressed in a module-info file, the suppression applies to elements within the file and not to types contained within the module.

As a matter of style, programmers should always use this annotation on the most deeply nested element where it is effective. If you want to suppress a warning in a particular method, you should annotate that method rather than its class.

See Java Language Specification:
4.8 Raw Types
4.12.2 Variables of Reference Type
5.1.9 Unchecked Conversion
5.5 Casting Contexts
9.6.4.5 @SuppressWarnings
Since:
1.5

  • Required Element Summary

    Required Elements
    Modifier and Type
    Required Element
    Description
    String[]
    value
    The set of warnings that are to be suppressed by the compiler in the annotated element.

  • Element Details

    • value

      String[] value
      The set of warnings that are to be suppressed by the compiler in the annotated element. Duplicate names are permitted. The second and successive occurrences of a name are ignored. The presence of unrecognized warning names is not an error: Compilers must ignore any warning names they do not recognize. They are, however, free to emit a warning if an annotation contains an unrecognized warning name.

      The string "unchecked" is used to suppress unchecked warnings. Compiler vendors should document the additional warning names they support in conjunction with this annotation type. They are encouraged to cooperate to ensure that the same names work across multiple compilers.

      Returns:
      the set of warnings to be suppressed