static.java

package com.alex.static;

class Monster {

    private static int count;

    private int health;
    private int attack;

    public Monster() throws Exception {
        if (count >= 1) {
            throw new Exception("oops!");
        }
        count++;

        System.out.println("monster #" + count);
    }

    public static int getCount() {
        return count;
    }
}

public class Program {

    public static void main(String[] args) throws Exception {
        // System.out.println(Monster.count);
        // Monster.count = 5;
        System.out.println(Monster.getCount());
        Monster m = new Monster();
        System.out.println(Monster.getCount());
        Monster m2 = new Monster();
        System.out.println(Monster.getCount());
    }
}