Flash / Flex / ActionScript/Language/package

A package-level function

 
package com.example.shape
{
    public function testShapes():void
    {
        trace("test the shapes here...");
    }
}

Global Scope: Code placed directly outside a package body or at the top-level of a package body resides in the global scope.

 
package {
  // Code here is in the global scope
}
// Code here is also in the global scope
package {
  // Definitions here are accessible to all code in the global scope
}
// Definitions here are accessible to all code in the same source file

Import all the classes in a particular package by using the wildcard operator (*) trailing the package name

 
package
{
    import com.example.shapes.*;
    public class PackagesTest
    {
        public function PackagesTest()
        {
            var r:Rectangle = new Rectangle();
            10 + DEFAULT_SIZE;
            testShapes();
        }
    }
}
package com.example.shapes
{
    public const DEFAULT_SIZE:int = 256;
}
package com.example.shapes
{
    public class Rectangle
    {
        // define Rectangle here.
    }
}

package level function

 
package {
  import flash.display.Sprite;
  public class CallPackagedFunction extends Sprite {
    public function CallPackagedFunction() {
      PackagedFunction(graphics);
    }
  }
}
package {
  import flash.display.Graphics;
  public function PackagedFunction(target:Graphics):void {
    target.lineStyle(0);
    target.lineTo(100,100);
  }
}

Packages groups classes

 
package com.example.shapes
{
    public class Rectangle
    {
        // define Rectangle here.
    }
}
class SecretClass
{
    // define SecretClass here.
}

References to the classes by using their full name

 
package
{
    import com.example.shapes.Rectangle;
    import flash.geom.Rectangle;
    public class PackagesTest
    {
        public function PackagesTest()
        {
            var a:com.example.shapes.Rectangle =
                new com.example.shapes.Rectangle();
            var b:flash.geom.Rectangle =
                new flash.geom.Rectangle();
        }
    }
}
 
package com.example.shapes
{
    public class Rectangle
    {
        // define Rectangle here.
    }
}

The general form of a package definition directive

 
package packageName {
}
To add a class to a package
package packageName {
  Class source code goes here
}
To create a new class: use a class definition
class Identifier {
}
package com.wbex {
  class MyClass {
  }
}

To gain access to all the public classes in another package.

 
import packageName.*

Variables, functions, and namespace declarations can also be contained inside packages.

 
package com.example.shapes
{
    public const DEFAULT_SIZE:int = 256;
}