Scala Method Overriding. When a subclass has the same name method as defined in the parent class, it is known as method overriding. When subclass wants to provide a specific implementation for the method defined in the parent class, it overrides method from parent class..
Then, how do you override a method in Scala?
In Scala, method overriding uses override modifier in order to override a method defined in the super class whereas, method overloading does not requires any keyword or modifier, we just need to change, the order of the parameters used or the number of the parameters of the method or the data types of the parameters
Likewise, does Scala support multiple inheritance? Scala doesn't allow for multiple inheritance per se, but allows to extends multiple traits. Traits are used to share interfaces and fields between classes. They are similar to Java 8's interfaces. Classes and objects can extend traits but traits cannot be instantiated and therefore have no parameters.
Also to know, what class does Scala inherit from?
It is the mechanism in Scala by which one class is allowed to inherit the features(fields and methods) of another class. Important terminology: Super Class: The class whose features are inherited is known as superclass(or a base class or a parent class).
What is super class in Scala?
Call a method on a Super Class in Scala. This concept is used when we want to call super class method. So whenever a base and subclass have same named methods then to resolve ambiguity we use super keyword to call base class method. The keyword “super” came into this with the concept of Inheritance.
Related Question Answers
What is a class in Scala?
Classes in Scala are blueprints for creating objects. They can contain methods, values, variables, types, objects, traits, and classes which are collectively called members. Types, objects, and traits will be covered later in the tour.What is object in Scala?
In Scala, an object is a named instance with members such as fields and methods. An object and a class that have the same name and which are defined in the same source file are known as companions. Companions has special access control properties, which is covered under Scala/Access modifiers.What is abstract class in Scala?
A class which is declared with abstract keyword is known as abstract class. Abstract class is used to achieve abstraction. Abstraction is a process in which we hide complex implementation details and show only functionality to the user. In scala, we can achieve abstraction by using abstract class and trait.What is Scala case class?
Scala case classes are just regular classes which are immutable by default and decomposable through pattern matching. It uses equal method to compare instance structurally. It does not use new keyword to instantiate object. All the parameters listed in the case class are public and immutable by default.Can static method be overloaded?
Static methods cannot be overridden because they are not dispatched on the object instance at runtime. The compiler decides which method gets called. Static methods can be overloaded (meaning that you can have the same method name for several methods as long as they have different parameter types).What is constructor in Scala?
Scala constructor is used for creating an instance of a class. There are two types of constructor in Scala – Primary and Auxiliary. Not a special method, a constructor is different in Scala than in Java constructors. The class' body is the primary constructor and the parameter list follows the class name.Does Scala support operator overloading?
You see Scala doesn't support operator overloading, because it doesn't have operators!What is the difference between a trait and an abstract class?
Abstract class contain constructor parameters. Traits are completely interoperable only when they do not contain any implementation code. Abstract class are completely interoperable with Java code. Traits are stackable.What does extend class mean?
Definition and Usage The extends keyword extends a class (indicates that a class is inherited from another class). In Java, it is possible to inherit attributes and methods from one class to another. We group the "inheritance concept" into two categories: subclass (child) - the class that inherits from another class.What is mixin in Scala?
In scala, trait mixins means you can extend any number of traits with a class or abstract class. You can extend only traits or combination of traits and class or traits and abstract class. It is necessary to maintain order of mixins otherwise compiler throws an error.What is inheritance in Java with example?
Inheritance is a mechanism in which one class acquires the property of another class. For example, a child inherits the traits of his/her parents. With inheritance, we can reuse the fields and methods of the existing class. Hence, inheritance facilitates Reusability and is an important concept of OOPs.How does Scala solve inheritance diamond problem automatically?
Scala. Scala doesn't allow for multiple inheritance per se, but allows us to extend multiple traits. Scala resolves the diamond problem by defining one main super trait, whose code will be used, among all super traits. The main one is set with the extends keyword, while the others are set with with .What is Diamond problem in Scala?
The diamond problem is the inability to decide which implementation of the method to choose. Scala solves this by defining which implementation to choose as part of the language specifications(read the part about Scala in this Wikipedia article).What are Scala traits?
Scala Trait. A trait is like an interface with a partial implementation. In scala, trait is a collection of abstract and non-abstract methods. Traits are compiled into Java interfaces with corresponding implementation classes that hold any methods implemented in the traits.What is multiple inheritance in Java?
Java and Multiple Inheritance. Multiple Inheritance is a feature of object oriented concept, where a class can inherit properties of more than one parent class. The problem occurs when there exist methods with same signature in both the super classes and subclass.How can we achieve inheritance in Java?
In Java inheritance is declared using the extends keyword. You declare that one class extends another class by using the extends keyword in the class definition. Here is Java inheritance example using the extends keyword: In java, it is possible to reference a subclass as an instance of one of its super-classes. 
