Package private is the default access-control modifier in Java. If a member of a class is not annotated with `private`, `protected`, or `public`, then the member is `package private` by default. When a member is `package-private`, it can only be accessed by the parent class, and other classes in the same package.
Consider the following classes:
package my.stuff;
class Foo {
private int a;
int b;
}
package my.stuff;
public class Bar {
private int c;
private int d;
}
package my.otherstuff;
public class Baz {
private int c;
private int d;
}
Class Foo is accessible from class Bar, but not from class Baz. This is because both Foo and Bar are in the same package (my.stuff). Also, the field Foo.b is accessible from Bar, but not from Baz for the same reasons.
