Getting dynamic with arrays

As we discussed at the beginning of all this array stuff, if we need to declare and initialize each element of an array individually, there isn't a huge amount of benefit to an array over regular variables. Let's look at an example of declaring and initializing arrays dynamically.

Dynamic array example

Let's make a simple dynamic array example. You can get the working project for this example in the download bundle. It can be found in the Chapter 15/Dynamic Array Example/MainActivity.java folder.

Create a project with an empty Activity and call it Dynamic Array Example.

Type the following just after the call to setContentView in onCreate. See if you can work out what the output will be before we discuss it and analyze the code:

// Declaring and allocating in one step
int[] ourArray = new int[1000];

// Let's initialize ourArray using a for loop
// Because more than a few variables is allot of typing!

for(int i = 0; i < 1000; i++){

   // Put...