Java Game Update Loop

public class Test
//Java Game Loop implementation based on http://www.koonsolo.com/news/dewitters-gameloop/
//java port by b5cully
{
    static int TICKS_PER_SECOND = 25;
    static int SKIP_TICKS = 1000 / TICKS_PER_SECOND;
    static int MAX_FRAMESKIP = 5;

    static int tickcount = 1;
    static int d; //just for simulating purpose

    public static void update( ) {
        int next_game_tick = tickcount;
        int loops;
        float interpolation;

        boolean game_is_running = true;
        while( game_is_running ) {
            loops = 0;
            while( tickcount > next_game_tick && loops < MAX_FRAMESKIP) {
                //UPDATE GAME HERE
                next_game_tick += SKIP_TICKS;
                loops++;
                System.out.println("update");
            }

            interpolation = (float) tickcount + SKIP_TICKS - next_game_tick/ (float) SKIP_TICKS;
            //DISPLAY GAME HERE  display_game( interpolation );
            //use: view_position = position + (speed * interpolation)
            //in all displaying methods
            System.out.println("display " + interpolation + " " + tickcount );
            d++;
            tickcount++; //count up the ticks
            if ( d > 10000) break; //just for simulating purpose, remove this
    }
    }

    public static void main(String[] args) {
        update();
    }
}