Deprecated classes and interfaces should be avoided, rather than used, inherited or extended. Deprecation is a warning that the class or interface has been superseded, and will eventually be removed. The deprecation period allows you to make a smooth transition away from the aging, soon-to-be-retired technology.
== Noncompliant Code Example
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/**
* @deprecated As of release 1.3, replaced by {@link #Fee}
*/@Deprecated
class Foo { ... }
class Bar extends Foo { ... }
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== Compliant Solution
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class Bar extends Fee { ... }
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== Exceptions
When the class that extends a deprecated class is itself deprecated, the extending class will be ignored.
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@Deprecated
class Bar extends Foo { ... } // compliant Bar is deprecated.
