class MyClass{} // curly braces are optional here as class body is emptyclass MyClassWithMethod {def method: MyClass = ???}new MyClass() //Instantiateobject MyObject // Singleton objectclass MyClassWithGenericParameters[V1, V2](vl: V1, i: Int, v2: V2)class MyClassWithImplicitFieldCreation[V1](val v1: V1, val i: Int)new MyClassWithGenericParameters(2.3, 4, 5) or with a different type: new MyClassWithGenericParameters[Double, Any](2.3, 4, 5)class MyClassWithProtectedConstructor protected[my.pack.age](s: String)