• Public class, class is visible to all classes everywhere
• Package-private, it is visible only within its own package
• Constructor are not inherited

• Public class, class is visible to all classes everywhere
• Protected modifier specifies that the member can only be accessed within its own package (as with package-private) and, in addition, by a subclass of its class in another package
• Package-private), it is visible only within its own package
• Private modifier specifies that the member can only be accessed in its own class

Modifier	Class	Package	Subclass	World
Public	*	*	*	*
Protected	*	*	*
Package-Private	*	*
Private	*

• Protected variables and methods are accessible in child and grand child directly

package A;

public class Car
{
	//protected
	protected String maker;

	//public
	public Car(String maker)
	{
		this.maker = maker;
	}

	//package-private
	String getMaker()
	{
		return maker;
	}
}
			

package B;
import A.Car;

public class Buick extends Car
{
	protected String color;

	public Buick(String m, String c)
	{
		super(m);
		color = c;
	}

	public String getColor()
	{
		return color;
	}

	public String toString()
	{
		return maker+" "+color;
	}
}
			

package C;
import B.Buick;

public class Rendezvous extends Buick
{
	private int year;

	public Rendezvous(String m, String c, int y)
	{
		super(m, c);
		year = y;
	}

	public String toString()
	{
		return maker+" "+color+" "+year;
	}
}
			

import A.Car;
import B.Buick;
import C.Rendezvous;

public class CarTest
{
	public static void main(String args[])
	{
		Car c = new Car("Buick");
		Buick b = new Buick("Buick", "White");
		Rendezvous r = new Rendezvous("Buick", "White", 2005);

		System.out.println(r);
	}
}
			

package A;

public class Car
{
	//protected
	protected String maker;

	//public
	public Car(String maker)
	{
		this.maker = maker;
	}

	public String getMaker()
	{
		return maker;
	}

	@Override
	public String toString()
	{
		return "Car: "+maker;
	}
}
			

package B;
import A.Car;

public class Buick extends Car
{
	protected String color;

	public Buick(String m, String c)
	{
		super(m);
		color = c;
	}

	public String getColor()
	{
		return color;
	}

	@Override
	public String toString()
	{
		//call it's parent's toString
		return "Buick: "+ super.toString()+" "+color;
	}
}
			

import A.Car;
import B.Buick;

public class CarTest
{
	public static void main(String args[])
	{
		Car c = new Car("Buick");
		Buick b = new Buick("Buick", "White");

		System.out.println(c);//toString of Car is called
		System.out.println(b);//toString of Buick is called

		System.out.println(b.getMaker()+" "+b.getColor());
	}
}
			

• Static is able to be inherited from parent class, however, static methods in child class does not override the methods with same names in parent class, they are just hidden

public class Car
{
	public static void display()
	{
		System.out.println("Car");
	}
}
			

public class Buick extends Car
{
	public static void display()
	{
		System.out.println("Buick");
	}
}
			

public class CarTest
{
	public static void main(String args[])
	{
		Car c = new Car();
		Buick b = new Buick();

		c.display();//Car
		b.display();//Buick
	}
}
			

• Oracle Tutorial