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

Question

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

So that this question does not sound completely outside the world, I will try to list the similarities between Dart and Java 8, which will make them almost twins.

• "He loves checking structure and static type. In Dart, every object has a static shape."
• "Class Based and Object Oriented"
• Generics .
• "Lexical this. Unlike JavaScript, when you use it this, you know what that means."
• "Array-free arrays."
• Has a card.
• "Has both integers and doubles."
• It has sockets and an IO file .
• Isolates .
• Has a package manager .
• Performance comparable to Java.
• Historical: JS was introduced as a simplified, dynamic version of Java / C ++ that can be run in browsers. Dart is something very opposite - it is more static and has more features.

At first I thought it might be currying, but currying is in Java 8 .

Other than the syntax, what are the main differences between Dart and Java 8 / C #?

UPDATE

This answer is from @SethLadd, one of the developers of Dart: Does Dart have any useful features for web programmers? It includes all the basic functions of the Dart language, so it will not leave any problems when comparing these languages.