“The constructor is not visible” error

Question

I have two classes :

First, with one constructor :

public class First {

    First (ObjectA myObjectA) {
        //do stuff
    }
}

Answer 1

Since you are not mentined any modifier the access modifier is now default, that means it is visible only within its own package

If you try to use it out side the package, you'll face the current error.

Try to read :What is the default access modifier in Java?

If you did'nt get understood what @BackSlash is commenting, check the below link

Problem with : Calling a method from a superclass