The for loop is great, but is it really that nice when you want to iterate over an array or collection? You’d have to do something like the following : Works fine doesn’t it? Looks a bit messy doesn’t it? No need for the index since we only ever use it to get the current […]
Category: SCJP
As I’ve covered in a previous post regarding the while loop, the do-while, often refered to as the do loop is very similar. Lets have a look at the psuedo code. So as we can see, the actual body of the loop gets executed at least once before the boolean expression is ever evaluated. Now […]
Just another bitesize SCJP post here, looking at the while loop in Java. There may be times, where you need to continually iterate over a code block for an unknown number of times. What you can do, is to loop through a code block while a condition is true, something else might change that condition, […]
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Playing with the For loop in Java…
The for loop is an extremely flexible and powerful way of iterating over a code block for a set number of times. Generally speaking, this type of loop is great for situations when you need to repeat code for a definitive number of times, for example you know that your shopping basket contains 10 items, […]
This is easily one of the most confusing concepts to a n00b, but to be honest its relatively simple. The most confusing part is that both start with the letter ‘O’. You’ll really need to understand this if you plan to get anywhere as a programmer, as you can bet you’ll be asked “what is […]
One of the new features of Java 5 is the static import, its quite simple in nature. You have probably done something like the following many times before : Nothing too complex, you’re refering to static methods on the System and Math classes. If you use a lot of static methods from other classes, you […]
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Declaration Rules in Java
Another one of my short and sweet posts in my SCJP study guide section. This one is quite straightforward, so we’ll keep it quick, since I know you’d much rather be facebooking or watching cats do strange things on youtube… Declaration rules, in regards to the class files themselves, meaning what you can and can’t […]
Identifiers are what we use to identify parts of our code, whether this is a class, method or a variable. There are some ground rules on the names we can give to these identifiers, and it is good to understand the ground rules regarding these. There are 3 levels, or aspects of identifiers, and are […]
The operators for incrementing and decrementing in Java has been irritating me for some time now, just when I think I understand whats going on, I try a mock exam for SCJP and I get caught out. So I’ve decided to sit down, do a bit of reading, and drill it out. Take this example, […]