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Showing posts with label basics. Show all posts
Showing posts with label basics. Show all posts
Saturday, June 11, 2016

Basics: Just what IS an object, anyway?

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This is a pretty long one by the standards of this blog.  Try to stay with it, though, the concepts are crucial. Whether people are experi...
Friday, June 3, 2016

Super basic object stuff

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I am not going to rework this right now, I think it gets the main points across as is. From a recent Reddit post: What you are a...
Sunday, November 15, 2015

There's a loop for each of us

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This is one of the really useful additions to the Java language specifications.  It greatly simplifies many loop structures, eliminating a b...
Wednesday, November 11, 2015

Stop giving me so much static

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Let's talk about the keyword static for a moment. There are two different uses for this in our code.  It can be applied to methods or...

It's the final countdown!

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Many times we declare a variable that we really ought not to change, at least in some particular spot.  We can just remember not to change i...
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Tuesday, November 10, 2015

I tried to print my array but all I got was gobbledegook!

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This is inspired by a post at /r/javahelp. A user posted that they were trying to print a sorted array to the console with System.out,prin...
Tuesday, February 10, 2015

It's a SERIES OF TUBES!

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I've been struck in recent days by a number of posts over at /r/javahelp, all with the same basic theme.  They've got some code, and...
Wednesday, December 3, 2014

Inheritance Part 1 - That Class is Super!

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I would like to discuss the concept of inheritance, and no, I don't mean the vase that Aunt Gladys left you in her will. When we talk ...
Monday, November 24, 2014

Collections Part 2: Map

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It's time to talk about the Map. Sometimes we need to store and retrieve information based on its relationship to other information in...
Friday, November 21, 2014

Collections Part 1: List

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Let's talk about Collections.  I don't mean baseball cards...  or dust.  I'm talking about the Collections framework, which is a...
Wednesday, November 19, 2014

Don't Treat me Like an Object

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I originally posted this on Reddit, and got some positive feedback on it, so I thought I would put it up here as an early lesson in object ...
Tuesday, November 18, 2014

Arrays: A new dimension

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Let's revisit arrays and take them quite literally to the next level. To recap:  An array is a means for storing multiple values of th...
Monday, November 17, 2014

Arrays of Golden Sun

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We've seen processing of simple integer values already, but what if you have to deal with a bunch of them?  Perhaps you have 20 test res...

The Old Switcheroo

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Let's talk about the 'switch' statement for a bit.  This is a form of conditional that is better suited to some tasks than if/el...

If I, if I, if I, if I Didn't Love you else I'd Hate You

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At this point I'm sure I've written a bunch of if statements in various examples, but I want to discuss a few specifics. So far, I...