duple.blogg.se - Kotlin internal class meaning

Expected behavior and behavior verification.

Academy describing MockK from the very basics of mocking up to description of all advanced features. Inner.Check the series of articles “Mocking is not rocket science” at Kt. OuterClass.InnerClass inner = outer.new InnerClass() //creating object to InnerClass You have to create OuterClass object to access non-static inner class

only fields and methods are inherited, but not member Inner Classes Even though, When an inner class extends its outer class, only fields and methods are inherited but not inner class itself. Because, even the private members of outer class are available inside the inner class. Inner class can extend it’s outer class.(anotherInnerClass.y) //accessing inherited field y from InnerClass (anotherClass.x) //accessing inherited field x from OuterClassĪthodOfOuterClass() //calling inherited method from OuterClassĪnotherClass.AnotherInnerClass anotherInnerClass = anotherClass.new AnotherInnerClass() Inner Class of AnotherClass extends Inner Class of OuterClassĪnotherClass anotherClass = new AnotherClass() //creating AnotherClass Object it's inner class must extend inner class of it's super classĬlass AnotherInnerClass extends InnerClass When an outer class is extended by it’s sub class, Member inner classes will not be inherited to sub class. To use inner class properties inside the sub class of outer class, sub class must also have an inner class and that inner class must extend inner class of the outer class.New OuterClass().super() //accessing super class constructor through OuterClass instance Extending non-static inner class or member inner classĬlass AnotherClassTwo extends OuterClass.InnerClassTwo static nested class can be referred by outer class name, Extending Static inner class or static nested classĬlass AnotherClassOne extends OuterClass.InnerClassOne Because, you can’t access non-static inner class without the instance of outer class. If you are extending non-static inner class, then sub class constructor must explicitly call super class constructor using an instance of outer class. If you are extending static inner class (Static nested class), then it is a straight forward implementation. An inner class can be extended by another class outside of it’s outer class.thodOfInnerClassOne() //calling inherited method from InnerClassOne (innerTwo.x) //Accessing inherited field x from InnerClassOne OuterClass.InnerClassTwo innerTwo = outer.new InnerClassTwo() //Instantiating InnerClassTwo OuterClass outer = new OuterClass() //Instantiating OuterClass One Inner Class can extend another inner class ("From InnerClassOne") Ĭlass InnerClassTwo extends InnerClassOne One inner class can extend another inner class of the same class.