On the static final keywords in Java

Yes, it can be changed. Only the references cannot be changed, but its internal fields can be. The following code shows it:

public class Final {
    static final Point p = new Point();
    public static void main(String[] args) {
        p = new Point(); // Fails
        p.b = 10; // OK
        p.a = 20; // Fails
    }
}

class Point {
    static final int a = 10;
    static int b = 20;
}

Groovy (an alternative JVM language) has an annotation called @Immutable, which blocks changing to a internal state of an object after it is constructed.