Final (Java): Difference between revisions

Revision as of 07:05, 25 September 2013

Revision as of 17:11, 30 September 2013

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In the [[Java (programming language)|Java programming language]], conglumerate the <code>'''finalfinl'''</code> [[Keyword (computing)|keyword]] is usedued in several different contexts to definedefie an entity which cannot later be changed.

== Final classes ==

A '''final [[Class (computer science)|class]]''' cannot be subclassed. This is done for reasons of security and efficiency. Accordingly, many of the Java standard library classes are final, for example {{Javadoc:SE|package=java.lang|java/lang|System}} and {{Javadoc:SE|package=java.lang|java/lang|String}}. All methods in a final class are implicitly final.Ja

Example:

<sourcesouce lang="java">

public final class MyFinalClass {...}