How to implement constants in java

Question

What is the best way to implement constants in java

Answer 1

Here is the solution-

public static final TYPE NAME = VALUE;

where TYPE is the type, NAME is the name in all caps with underscores for spaces, and VALUE is the constant value;

As a side note: Variables that are declared final and are mutable can still be changed; however, the variable can never point at a different object.

For example:

public static final Point ORIGIN = new Point(0,0);

public static void main(String[] args)

{

    ORIGIN.x = 4;

}

That is legal and ORIGIN would then be a point at (4, 0).