Technology Zone

[M0NK3Y]

The code used for this tutorial can be applied not just for Java but for other programming languages.

Loops are basically things that run many times. So if you want to do a function five times, instead of having the same code five times over and over, you can use a loop and it will be more efficient. It will also be easier to change a part because you will only need to change it once.

There are two types of loops that this tutorial will cover: while and for loops.

While
Example:
int i = 0;
while(i<20)
{
//some functions
i=i+1; // or i++;
}

Here is the model:
while(expression)
{
//code here
}

This will execute the code 20 times. Notice the first number i starts with is zero and not 1. If it were 1, then it would execute the function 19 times. It evaluates the expression in the parentheses before it executes the code, and it will keep executing the code until the expression is false. You can use any expression in the parentheses, and you are not limited to numbers.

For

Example
for(int i=0;i<20;i++)
{
//some functions
}


Model
for(initialize local variable;expression;function)
{
//code here
}

initialize local variable-You can initialize a local variable to serve like a counter.
expression- will continue to run the loop code until this expression is false
function- will execute this line of code after the for loop code is executed. You don't always have to put something here.

A for loop is really suited as a counter loop. It evaluates the expression, then executes the loop code.

Credits go to >Giraffe

[Faulrn]

... basic loops. Can be veiwed just about everywhere. Now let me give you a challenge.

In java,produce a source code which makes the computer BEEP, regardless of weather you have a speaker or not, when you run it. then apply a for loop that will loop till you close the application.

Have fun.

[M0NK3Y]

LOL! thats hard!

[Faulrn]

No, not hard at all, jus requires thinking.

Let me point you in the right direction: Ascii Table - ASCII character codes html octal hex decimal charts

Its to do with ascii codes, below 10. I already hinted you too much, if you have not yet figured it out, post here (but only after you have truley taken the time to attempt it). I will give you the source code.

It bugs the hell out of my teachers :P

[chivien]

Thanks you so much ^^ i love XD

[+amdjebb]

Is there a way to hack Rakion using java code? And if there is, is there an example to build on?

[M0NK3Y]

I Think there is.... ask a hacker?

[Cockney]

Originally Posted by Faulrn

... basic loops. Can be veiwed just about everywhere. Now let me give you a challenge.

In java,produce a source code which makes the computer BEEP, regardless of weather you have a speaker or not, when you run it. then apply a for loop that will loop till you close the application.

Have fun.

Done, took 5 minutes. Any other challenges :P.

Oh and java for hacking? Try and make a memory editor in a java compiler -_-.

[M0NK3Y]

Lol.. more challenges? i did the beep thing

[garbett1]

ok you want a challenge
i made a paint program using java language only
the specifications:
must be able to have colors,shapes,eraser,spray,fill,new page
must be able to save and load images
must be able to paint some text
must be able to specify the size of the shapes
Extras:
anything you can come up with (eg:layers and layers manipulation)

i did this in one week by myself so in one week i will post the source code unless requested to not post it