Comments on: How-To: Initialise arrays of objects in Java

By: r3dux

r3dux — Thu, 20 Oct 2011 23:32:34 +0000

Hmm, never heard of a properties file – that seems pretty good, actually! Ta! =D

By: shetboy

shetboy — Thu, 20 Oct 2011 12:30:44 +0000

Thought that this may be of some use and is directly related to your code example, you could initialize arrays like this…

private Integer[] myNumbers = {
    new Integer(17),
    new Integer(22)
};

But if you need to have a bunch of numbers initialized then logically speaking they could be properties, this will depend on your design. So I’d initialise them with a properties file instead of hard-code values within the class.

Or retrieve them from a database

Or you know, like… whateva

Your mileage may vary (YMMV!)

By: shetboy

shetboy — Fri, 07 Oct 2011 10:47:26 +0000

Basically, if you have a coding problem the chances are that somebody or some group will have written a library that solves it in a very re-usable and simple way. A great example of this is Apache Commons, but remember that this is only one example. That is why it's really important to setup Maven Integration in your IDE. Getting a specific version of a specific jar is simply a right-click-and-select-from-list away. It's like Synaptic for Java because it'll get you all the jar's that depend on it too.

By: r3dux

r3dux — Fri, 07 Oct 2011 08:24:21 +0000

Did not know about that class! (as I gather you gathered =P)

Will check it out – thanks, mate!

Also, liked your quote – but if you use

you get a quote graphic (WOOOOooooo!)

By: shetboy

shetboy — Fri, 07 Oct 2011 05:01:07 +0000

Good post Just knowing about the java.util.Arrays class could potentially save you massive amounts of time down the road. First sentence of Javadoc's is... "This class contains various methods for manipulating arrays (such as sorting and searching). This class also contains a static factory that allows arrays to be viewed as lists."