Genarating random strings?

Question

could someone please tell me if this code will generate a 'b' and a 'w'
if i tell it too. and how do i make it 5 characters long. And its says
this is how you call it and i dont have a clue what that means. and when
you answer this please dont use techincal terms cause im just learning
and i probaly wont have a clue what your talking about. thankyou.
<?php
// function to generate random strings
function RandomString($length=32)
$randstr='';
srand((double)microtime()*1000000);
//our array add all letters and numbers if you wish
$chars = array ( 'a','b','c','d','e','f');
for ($rand = 0; $rand <= $length; $rand++)
$random = rand(0, count($chars) -1);
$randstr .= $chars[$random];
return $randstr;
?>
and call it like this
<?php
echo RandomString(8);
?>
Example
ebbfbcbae

Answer 1

Well, first of all this is PHP code and not Java. And I am not sure but I don't think it's possible to call PHP functions in Java Code (the otehr way around it should be working though, at least with the Java Extension for PHP). So, if you are writing a Java programm, you will probably have to translate this code piece to Java.
Second. It will do what you want it to do - given you make a few modifications. You will have to change the line
$chars = array ( 'a','b','c','d','e','f');
to
$chars = array ( 'b','w');
as these are the characters you want. And you will have to call the function like this
echo RandomString(5);
if you want a string with five letters.
I don't know how much this will help you, since this code is PHP and written procedural and not object-orientented as you have to write Java in, and the translation to Java might not be that easy if you don't know much about Java.