Code for abstract classes and traits article

core-scala/src/main/scala/com/baeldung/scala/traits/classes/AbstractClassesAndTraits.scala

@@ -0,0 +1,62 @@
+package com.baeldung.scala.traits.classes
+
+
+object PartiallyImplemented {
+
+ trait Foo1 {
+ def int: Int // abstract member
+ val string: String = "hello" // non-abstract member
+ }
+
+ abstract class Foo2 {
+ def bool: Boolean // abstract member
+ val unit: Unit = () // non-abstract member
+ }
+
+}
+
+object ConstructionParameters {
+ abstract class Student(name: String) {
+ def printName: Unit = println(name)
+ }
+
+ class Senior(name: String) extends Student(name)
+
+ val jeremy = new Senior("jeremy")
+}
+
+object ConstructionParametersTrait {
+ trait Student {
+ def name: String
+ def printName: Unit = println(name)
+ }
+
+ class Senior(_name: String) extends Student { val name: String = _name }
+
+ val jeremy = new Senior("jeremy")
+}
+
+object MultipleArguments {
+ abstract class Multiple(a: Int)(b: Int)
+
+ class Baz extends Multiple(1)(2)
+}
+
+object MultipleInheritance {
+ trait A
+ trait B
+ trait C
+
+ class Foo extends A with B with C
+
+}
+
+object MixedExample {
+ trait A
+ trait B
+ abstract class X
+ abstract class Y
+
+ class Impl extends X with A with B // valid
+ // class Impl2 extends X with Y // will not compile
+}