Static1

public class MyClass {
    public static void main(String args[]){
    Duck d;
    d = new Duck(4);
    d = new Duck(6);
    d = new Duck(8);

        System.out.println(d.getCount());
    }
}
class Duck{
    private int size;
    private static int duckCount= 0;

    public Duck(int size){
        this.size = size;
        duckCount++;
    }

    public int getCount(){
        return duckCount;
    }
}