@Deprecatedis one that programmers are discouraged from using. An element may be deprecated for any of several reasons, for example, its usage is likely to lead to errors; it may be changed incompatibly or removed in a future version; it has been superseded by a newer, usually preferable alternative; or it is obsolete.
Compilers issue warnings when a deprecated program element is used or
overridden in non-deprecated code. Use of the
annotation on a local variable declaration or on a parameter declaration
or a package declaration has no effect on the warnings issued by a compiler.
When a module is deprecated, the use of that module in
requires, but not in
opens clauses causes
a warning to be issued. A module being deprecated does not cause
warnings to be issued for uses of types within the module.
This annotation type has a string-valued element
since. The value
of this element indicates the version in which the annotated program element
was first deprecated.
This annotation type has a boolean-valued element
A value of
true indicates intent to remove the annotated program
element in a future version. A value of
false indicates that use of
the annotated program element is discouraged, but at the time the program
element was annotated, there was no specific intent to remove it.
- API Note:
- It is strongly recommended that the reason for deprecating a program element
be explained in the documentation, using the
@deprecatedjavadoc tag. The documentation should also suggest and link to a recommended replacement API, if applicable. A replacement API often has subtly different semantics, so such issues should be discussed as well.
It is recommended that a
sincevalue be provided with all newly annotated program elements. Note that
sincecannot be mandatory, as there are many existing annotations that lack this element value.
There is no defined order among annotation elements. As a matter of style, the
sinceelement should be placed first.
@Deprecatedannotation should always be present if the
@deprecatedjavadoc tag is present, and vice-versa.
- See Java Language Specification:
Optional Element SummaryModifier and TypeOptional ElementDescription
booleanIndicates whether the annotated element is subject to removal in a future version.Returns the version in which the annotated element became deprecated.
sinceString sinceReturns the version in which the annotated element became deprecated. The version string is in the same format and namespace as the value of the
@sincejavadoc tag. The default value is the empty string.
- the version string
forRemovalboolean forRemovalIndicates whether the annotated element is subject to removal in a future version. The default value is
- whether the element is subject to removal