Java: Non-static nested classes and instance.super()

by

It’s called a “qualified superclass constructor invocation”.

Citing from here:

Explicit constructor invocation statements can be divided into two kinds:

  • Alternate constructor invocations begin with the keyword this (possibly prefaced with explicit type arguments). They are used to invoke an alternate constructor of the same class.

  • Superclass constructor invocations begin with either the keyword super (possibly prefaced with explicit type arguments) or a Primary expression. They are used to invoke a constructor of the direct superclass. Superclass constructor invocations may be further subdivided:

  • Unqualified superclass constructor invocations begin with the keyword super (possibly prefaced with explicit type arguments).

  • Qualified superclass constructor invocations begin with a Primary expression . They allow a subclass constructor to explicitly specify the newly created object’s immediately enclosing instance with respect to the direct superclass (ยง8.1.3). This may be necessary when the superclass is an inner class.

More Related Contents:

  1. How to call the getters and setters of inner class attributes in the TestApplication.java class?
  2. Java inner class and static nested class
  3. What causes error “No enclosing instance of type Foo is accessible” and how do I fix it?
  4. Difference between final and effectively final
  5. Why can outer Java classes access inner class private members?
  6. Why does Java prohibit static fields in inner classes?
  7. Java: Static vs inner class [duplicate]
  8. Getting hold of the outer class object from the inner class object
  9. How can I include raw JSON in an object using Jackson?
  10. Why can’t we have static method in a (non-static) inner class (pre-Java 16)?
  11. How to instantiate non static inner class within a static method?
  12. Instantiating inner class
  13. Can we create an instance of an interface in Java? [duplicate]
  14. Why is an anonymous inner class containing nothing generated from this code?
  15. Inner class within Interface
  16. Is it possible to make anonymous inner classes in Java static?
  17. “Non-static variable this cannot be referenced from a static context” when creating an object
  18. Is it possible to create an instance of inner class using Java Reflection?
  19. How can “this” of the outer class be accessed from an inner class?
  20. Is not an enclosing class Java
  21. Why do inner classes make private methods accessible?
  22. Instantiate private inner class with java reflection
  23. Can I access new methods in anonymous inner class with some syntax?
  24. non-static class cannot be referenced from a static context [duplicate]
  25. Inner class and local variables
  26. Java (anonymous or not) inner classes: is it good to use them?
  27. Test cases in inner classes with JUnit
  28. Accessing outer class variable in inner class
  29. In Java nested classes, can the enclosing class access private members of inner classes?
  30. Java: calling outer class method in anonymous inner class

Leave a Comment