Static Testing in Java

Executor.java

public class Executor {
    public static void main(String[]args){
        InstanceOne i1 = new InstanceOne();
        InstanceTwo i2 = new InstanceTwo();
    }
}

InstanceOne.java

public class InstanceOne extends StaticAbstract {
    public InstanceOne() {
        super(InstanceOne.class);
    }
}

InstanceTwo.java

public class InstanceTwo extends StaticAbstract{
    public InstanceTwo() {
        super(InstanceTwo.class);
    }
}

StaticAbstract.java

import java.util.Map;
import java.util.HashMap;
public abstract class StaticAbstract {

    private static Map<Class, Initializer> initializers = new HashMap<Class, Initializer>();

    public StaticAbstract(Class clazz) {
        if (!initializers.containsKey(clazz)) {
            initializers.put(clazz, new Initializer(clazz));
        }
    }

    public static Initializer getInitializer(Class clazz) {
        return initializers.get(clazz);
    }

    static class Initializer {
        public Initializer(Class clazz) {
            System.out.printf("Initializer created for %s.\n", clazz.getName());
        }
    }
}