Useful tips

Can inner class calling Outer method?

Can inner class calling Outer method?

Inner class can be declared within a method of an outer class. In the following example, Inner is an inner class in outerMethod().

How do you reference an outer class from an inner class?

If you want your inner class to access outer class instance variables then in the constructor for the inner class, include an argument that is a reference to the outer class instance. The outer class invokes the inner class constructor passing this as that argument.

How do you call a method from a nested class?

Of your inner class is non static then create an object of innerClass. OuterClass out = new OuterClass();

How do you access the outer class method from inner class in Kotlin?

Kotlin Inner Class Example

  1. class outerClass{
  2. private var name: String = “Ashu”
  3. inner class innerClass{
  4. var description: String = “code inside inner class”
  5. private var id: Int = 101.
  6. fun foo(){
  7. println(“name is ${name}”) // access the outer class member even private.
  8. println(“Id is ${id}”)

How to call outer class function from inner class?

Closed 4 years ago. I have implemented a nested class in Java, and I need to call the outer class method from the inner class. How can I call the Outer method show?

What are the types of inner classes in Java?

Inner classes are of three types depending on how and where you define them. They are − Creating an inner class is quite simple. You just need to write a class within a class. Unlike a class, an inner class can be private and once you declare an inner class private, it cannot be accessed from an object outside the class.

Can a nested inner class access an outer class?

Nested Inner class can access any private instance variable of outer class. Like any other instance variable, we can have access modifier private, protected, public and default modifier. Like class, interface can also be nested and can have access specifiers. Following example demonstrates a nested class.

Can a inner class have a static method?

As a side note, we can’t have static method in a nested inner class because an inner class is implicitly associated with an object of its outer class so it cannot define any static method for itself. For example the following program doesn’t compile.