CtrNum.java

class CtrNum
{
    static private int count = 0;
    private int hp;
    private double mp;
    
    public CtrNum(){
        hp=100;
        mp=100;
        count++;
        
    }
    
    public CtrNum(int hp, double mp){
        this();
        this.hp=hp;
        this.mp=mp;
    }
    
    public static int getCount(){
        return count;
    }
    
    public int getHp(){
        return hp;
    }
    public double getMp(){
        return mp;
    }
}

Main.java

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws Exception {
        // Here your code !
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String line = br.readLine();
        CtrNum t1=new CtrNum();
        System.out.println(CtrNum.getCount());
    }
}