To bring order to data types and functions, Scala uses object orientation like Java. All the Java gaming engines are easily accessible for Scala web coders. The standard library, as well as tailor-made code, define classes from which one instantiates concrete objects. Classes bundle the properties of the objects and also contain methods: those functions which specify what the programmer is allowed to do with an object.
A hierarchical system of parent and child classes governs inheritance: Subclasses inherit properties and methods from the parent. Scala also knows abstract classes that cannot be instantiated themselves. They serve only to inherit common properties and methods to their subclasses.
Scala web development uses multiple inheritances using so-called traits, which are recorded almost as much as abstract classes. They roughly correspond to the interfaces in Java. A Scala class can inherit only a single parent class, but several traits.
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