trace() is the System.out.println(), the print, the console.log() of the actionscript world

Public, private, protected and internal modifiers. Private is within the class, protected is within class and subclass while internal is within package.

Static is as per Java, as is constant. however static variable and functions are not inherited

No method overloading

Allows for default argument values like python, al-la, function forceOpacity(Int:percent="50") {} the argument becomes optional if it has a default argument value. Actionscript has a ...rest argument which allows arbitrary parameters to be passed in

Constructor is a public function in the class with the same name as the class and does not have a return value. Same as java.

Casting is of form, Type(var_to_be_cast); or cast during assignment, var a:Array var_strings as Array;

There are get and set keywords, they are modifiers on functions.

Import is as per Java, as is the package names.

Extends is as per Java, ie, public class Limousine extends Car {}

Interface and implements is the same as Java but ActionScript has no abstract modifier

Try/catch/finally is as per Java. Finally executes even if the code in the try block doesn't throw an error

Three fundamental data types; Null, void and Object. Other data types are String, Boolean, int, uint, Number

Null and undefined is not dissimilar to javascript

Typeof and instanceof similar to javascript

Scoping is similar to javascript, doesnt appear to be block scoping in for/while/if, lowest level is function scope

Events are listened to, ie, object.addEventListener(MouseEvent.CLICK, clickHandler); where the second argument is the name of the function that will handle the event. No need for ' or " around it. The handler function is always passed an event object.

EventListeners carry garbage collection issues, if an object still has an EventListener attached to it then the garbage collector will not remove it from the stack, make sure it is managed explicitly with removeEventListener(). There is asynchronous error handling which uses error event listeners;

Actionscript includes do-while, for, for-in and for-each

XML is a datatype, var xmlfile:XML; can assign as xml string.