final

■ You cannot use final together with abstract.

■ You cannot put final on a constructor.

■ You cannot put additional modifiers on a final local variable. ie.

■ If you mark a variable final, you must create it immediately, either in its declaration statement or in a static initialization block.

■ For object handles, final means you can’t replace the reference with another object. The object can still be modified.

■ You cannot create non-final variables in an interface.