Arrays in Greenfoot

Lets say you want to create an array of objects from the class AClass, this is how you do this:

You want to put some objects form the class AClass in the array. This is how you begin: The name of the class needs to be here, and you have to put after it. Then, you write the name of the array: Then, you give it the objects, this just puts new AClass objects in it:

You can only put the same type of objects in an array, I forgot to mention :) That's why you write this:

Arrays are simple collection of objects of the same type (where all decendents of an object can be considered the same type .. like all subclasses of Actor). Typically, you declare an array like so: Base_Type Array_Name = new Base_Type; where Base_Type is the class name like Actor, String,etc Array_name is any legal java name length is the size of the array you what to create eg. String names =new String; // creates an empty array with 10 slots starting at 0 and going to 9 Or you can initialize the values at the time of declaration likes so: String names = {"John","Mary","Bill"}; an arrray also has a predefined field call length which is the length of the current array. For example in a for statement you can write: for (int i = 0; i < names.length; i++) System.out.println (names); or in a for-each statement you can write for (String name: names) System.out.println(name);