JD1's Personal Development Blog

Discussed in my last post was how we implement multiple classes and execute methods from within these classes via the main class. We can actually send variables from the main class into a method of the secondary class and then use those variables as desired. We do this through the use of parameters. Let me show you what I mean. Here's class2 and what it does.

public class class2{
	public void class2Method(String name){
		System.out.println("Hello "+name);

...

In each Java application, you're going to have a series of classes containing various instructions for the compiler. Each class can be responsible for different actions or functionality of the program.

Below is our first class, appropriately named class1.

class class1{
	public static void main(String args[]){
		System.out.println("This code is executed via class1!")
	}
}

Let's say that class1 is responsible for a ...

Originally Posted by KevinWorkman

From the standard naming conventions: "Braces are used around all statements, even single statements, when they are part of a control structure, such as a if-else or for statement. This makes it easier to add statements without accidentally introducing bugs due to forgetting to add braces."

And from experience, not using brackets leads to more confusion than you'd think it would- for you and for people reading your code.



It's not just the number

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Hi Kevin,

Thanks for your input. Can you briefly explain why it is necessary to encase single statement If Statements in brackets? I get that it's a global programming convention to do this, just incase you need to go back and add something else, but is there a more latent reason?

I'm definitely going to be using more Switch Statements. I guess it would be more effective to use an If Statement if you're testing one condition, or even if you're testing two (use Else ...

Originally Posted by KevinWorkman

Just a few words of advice, take them or leave them:

Even if an if or a loop only consists of a single statement, you should still surround it with {brackets}. This is not only a standard Java convention, but I promise it'll save you a headache in the future.

And perhaps I can clear up some of your thoughts on the switch statement.

You use an if statement to test conditions, the operands of which you might not know at compile time, because they can change

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