Will the compiler-generated default constructor be public?

Question

When I write a class Widget.java

public class Widget {
    int data;
    String name;
}

will the compiler-generated constructor be public or default?

public would be like

public class Widget {
    int data;
    String name;
    public Widget() {}
}

whereas default similar to

public class Widget {
    int data;
    String name;
    Widget() {}
}

Answer 1

It depends on your class visibility.The compiler uses the class visibility and generates a no-arg default constructor with the same visibility

Answer 2

As said in JLS

If a class contains no constructor declarations, then a default constructor that takes no parameters is automatically provided:

1. If the class is declared public, then the default constructor is implicitly given the access modifier public;
2. If the class is declared protected, then the default constructor is implicitly given the access modifier protected;
3. If the class is declared private, then the default constructor is implicitly given the access modifier private;
4. Otherwise, the default constructor has the default access implied by no access modifier

Answer 3

As classes visibility is public, it will always be a public constructor.