Java final Keyword: Difference between revisions
Jump to navigation
Jump to search
(Created page with "=Internal= * java =Overview= A <tt>final</tt> variable may only be assigned to once. The final variable may be defined unassigned and immediately assigned...") |
|||
| Line 5: | Line 5: | ||
=Overview= | =Overview= | ||
A <tt>final</tt> variable may only be assigned to once. The final variable may be defined unassigned and immediately assigned to ("definite assignment"). | A <tt>final</tt> variable may only be assigned to once. The final variable may be defined unassigned and immediately assigned to ("definite assignment"). Once a final variable has been assigned, it always contains the same value. If the variable contain a reference of an object, the state of the referred object may change, but the variable will always refer to the same object. | ||
An attempt to assign a final variable the second time is detected as compilation error. | |||
Revision as of 20:13, 27 September 2017
Internal
Overview
A final variable may only be assigned to once. The final variable may be defined unassigned and immediately assigned to ("definite assignment"). Once a final variable has been assigned, it always contains the same value. If the variable contain a reference of an object, the state of the referred object may change, but the variable will always refer to the same object.
An attempt to assign a final variable the second time is detected as compilation error.