diff --git a/scala.html.markdown b/scala.html.markdown
index 5eb94986..78053b40 100644
--- a/scala.html.markdown
+++ b/scala.html.markdown
@@ -460,8 +460,52 @@ val otherGeorge = george.copy(phoneNumber = "9876")
// And many others. Case classes also get pattern matching for free, see below.
+// Traits
+// Similar to Java interfaces, traits define an object type and method
+// signatures. Scala allows partial implementation of those methods.
+// Constructor parameters are not allowed. Traits can inherit from other
+// traits or classes without parameters.
-// Traits coming soon!
+trait Dog {
+ def breed: String
+ def color: String
+ def bark: Boolean = true
+ def bite: Boolean
+}
+class SaintBernard extends Dog {
+ val breed = "Saint Bernard"
+ val color = "brown"
+ def bite = false
+}
+
+scala> b
+res0: SaintBernard = SaintBernard@3e57cd70
+scala> b.breed
+res1: String = Saint Bernard
+scala> b.bark
+res2: Boolean = true
+scala> b.bite
+res3: Boolean = false
+
+// A trait can also be used as Mixin. The class "extends" the first trait,
+// but the keyword "with" can add additional traits.
+
+trait Bark {
+ def bark: String = "Woof"
+}
+trait Dog {
+ def breed: String
+ def color: String
+}
+class SaintBernard extends Dog with Bark {
+ val breed = "Saint Bernard"
+ val color = "brown"
+}
+
+scala> val b = new SaintBernard
+b: SaintBernard = SaintBernard@7b69c6ba
+scala> b.bark
+res0: String = Woof
/////////////////////////////////////////////////