What are the major differences between Dart and Java 8 / C#?

Question

I am a Java developer and recently I started reading about the language Dart and the more I read, the more I have a feeling it's very similar to Java 8.

For this question not to sound completely out-of-this-world, I'll try to list similarities between Dart and Java 8 which make them almost twins.

• "Loves structure and static type checking. In Dart every object has a static shape."
• "Class based and object oriented"
• Generics.
• "Lexical this. Unlike JavaScript when you use this you know what it is referring to"
• "Hole free arrays."
• Has maps.
• "Has both integers and doubles."
• Has sockets and file IO.
• Has isolates.
• Has a package manager.
• Performance comparable to Java.
• Historical: JS was introduced as a simplified dynamic version of Java/C++ which could be run in browsers. Dart is something very opposite to this - it's more static and has more features.

First I thought that may be currying, but currying is there in Java 8.

So other than syntax, what are the major differences between Dart and Java 8 / C#?

UPDATE

This answer from @SethLadd who is one of the developers of Dart: Does Dart have any useful features for web programmers? enlists all the major features of the Dart language, so it might leave no trouble comparing these languages.