Ok for the basics of java we will go throught the easies way to do it some peaple might say notpad well there wronge go to
www.textpad.com
and donwload it then get the lates jdk then open up textpad.
Hello World(javascript)
What is wrong with notepad? Well, a lot of things, but why can't I use it? It comes with the operating system, and syntax highlighting is only a tool used for quick analysis of code. For the matter, I prefer Emacs as a text editor, but as an IDE (If you don't know, Integrated Development Environment), I prefer for Java, either Eclipse, JCreator (It's alright, but Windows only >_>), or even Netbeans in some cases.
Java is NOT JavaScript. Two very different things; Java is an application development language used commonly for transmitting information and running applications through the internet (often with Java Web-Start or Applets). JavaScript is a scripting language designed for the dynamic display of content. The only similarity between the two is their syntax.
ok first your file will be named document1 well go to file save as and save it as HelloWorld.java this tells it we are dealing with a java program and will change everything to work with java now type in
Code:
public class HelloWorld
{
what this code does is it tells the computer what file to look for and it must be exact! the name of the file is case
sensitve.
WRONG. What it does is declare a class called HelloWorld. Due to Java's approach on object orientation, the class must be that of its filename.
now add
Code:
public static void main(String[] args)
{
what this does is tell it that we have started the first part of the script not first part but main part hint's the main
the method known as main() is simply a public static method of no return type which executes on the creation of a class. It is not the "first piece of code to execute," the initializer is.
now we must add the following codethere is several ways all show them all you can choose any of em
1. not my favorite but gest the job done:
Code:
System.out.print("Hello World\n");
what this does is it refers to the System and out put and print will show the text \n tells it to make a new line that way it says HelloWorld not
Hello Worldpress any key to continue
Yes ... Because the word 'several' totally covers the two ways mentioned here ...
Anyhow, System.out.print() is the same method as System.out.println(), except System.out.println() appends a newline to the end of the given string. This isn't a "different way of doing things," as it is essentially executing the same code. You must also note that often one is required to print something to the console without appending a newline.
Lastly, System is a package/namespace/whatever you want to call it in Java. System.out is also a Java package. It is simply a way of managing classes and methods and placing them under categories. To further this, you can even make your own packages by using the 'package' keyword and placing your class under a directory of the given package name.
2. my favorite:
Code:
System.out.println("Hello World");
ok what this does is println makes a line at the end for it stands for print then line.
Well done for deducing that much.
now press eneter and type } and press anter again and type }
Perhaps you should have bothered to explain just what exactly the curly braces do in code? Most good guides will actually go in to a depth of detail about this, however you often have to pay for those (i.e. hard print books by certified professionals).
your final code should be exacly:
Code:
public class HelloWorld
{
public static void man(String[] args)
{
System.out.println("hello world");
}
}
or
Code:
public class HelloWorld
{
public static void man(String[] args)
{
System.out.print("hello world\n");
}
}
Why exactly? What if I want to name something differently, or use a different string? Also, now that I think of it, have you explained what parameters and arguments are, the difference between them, and what
String[] args does?
Now press ctrl + 1 (cant be the key pad i have tried) now wait now at the bottome when done loading it shoudl say tool completed succsessfully
if not repeat.
If something doesn't work it's probably due to user fault. Debugging code is probably preferred to trying to build erroneous code.
now press ctrl + 2 (cant use key pad) now a black box should popup saying
Code:
Hello World
press any key to continue...
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What if I'm on Linux or Macintosh? So far as I know, they use a UNIX based terminal that features no such thing as "press any key to continue."
was going to show you how to make some applets and add em to html script let me make an html guide then ill show you
Because an entire tutorial is needed to show how to embed something in to a web page. Nice ending, too. *obvious sarcasm*
Your main faults:
1) Your English is terrible, even if it wasn't a bad guide, I wouldn't know. Most people who write good guides are good at the language they are using to convey information. >_>
2) You didn't go anywhere near as in depth as you should have.
3) This hardly explained anything.
4) What you do explain, you don't explain correctly.
5) When I was a beginner, I liked guides that explained to me the HOW aspect of things. If I don't know how, but only WHAT, then I won't know WHY, and hence I wouldn't understand. If you want to write a guide, it is imperative that you explain the HOW behind everything.
Lastly, another "helloworld" tutorial is the last thing this forum needs. I'm tempted to spend hours writing guides on particular aspects of different languages ... Or perhaps a guide on writing guides, considering this thread ...
I am of course, not discouraging you from programming. Not at all, I think it's brilliant that people want to develop software. However, I think that beginners should realise that they are indeed beginners, and they should leave the teaching to people that actually know what they're talking about.
easies java tutorial
