// interfaces/NonSealed.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// {NewFeature} Since JDK 17

sealed

class Super permits Sub1, Sub2 {
}

final class Sub1 extends Super {
}
non-sealed

class Sub2 extends Super {
}

class Any1 extends Sub2 {
}

class Any2 extends Sub2 {
}