What is final, finally and finalize?

final:

final is a keyword. The variable decleared as final should be

initialized only once and cannot be changed. Java classes

declared as final cannot be extended. Methods declared as final

cannot be overridden.

finally:

finally is a block. The finally block always executes when the
try block exits. This ensures that the finally block is executed
even if an unexpected exception occurs. But finally is useful for
more than just exception handling - it allows the programmer to
avoid having cleanup code accidentally bypassed by a return,
continue, or break. Putting cleanup code in a finally block is
always a good practice, even when no exceptions are anticipated.


finalize:

finalize is a method. Before an object is garbage collected, the
runtime system calls its finalize() method. You can write system
resources release code in finalize() method before getting garbage
collected.