Multiple instances of MySQL with single installation in Windows

Specify options for each server in separate files and use --defaults-file when you install the services to tell each server what file to use. In this case, each file should list options using a [mysqld] group.
With this approach, to specify options for the 5.0.92 mysqld-nt, create a file C:\my-opts1.cnf that looks like this:

[mysqld]
basedir = C:/mysql-5.0.92
port = 3307
enable-named-pipe
socket = mypipe1

For the 5.1.71 mysqld, create a file C:\my-opts2.cnf that looks like this:

[mysqld]
basedir = C:/mysql-5.1.71
port = 3308
enable-named-pipe
socket = mypipe2

Install the services as follows (enter each command on a single line):

C:\> C:\mysql-5.0.92\bin\mysqld --install mysqld1 --defaults-file=C:\my-opts1.cnf
C:\> C:\mysql-5.1.71\bin\mysqld --install mysqld2 --defaults-file=C:\my-opts2.cnf

When you install a MySQL server as a service and use a --defaults-file option, the service name must precede the option.
After installing the services, start and stop them the same way as in the preceding example.

Calling multiple Functions on single event in JQuery

$.firstfunc = function(cb) {
    alert("Function 1");
    return false;
}

$.secondfunc = function(){
    alert("Function 2");
    cb();
    return false;
}

$("#service_id").change(
  function() {
    $.firstfunc($.secondfunc);
});

Using Static Variable in JavaScript

The following code snippet explains how we can use static variables

in JavaScript.  

function foo() {

    if( typeof foo.counter == 'undefined' ) {
        foo.counter = 0;
    }
    foo.counter++;
    document.write(foo.counter+"<br />");
}

POST Data without CURL in PHP

file_get_contents() and stream_context_create() can be used for making POST requests instead of CURL. Following code snippet explains how the data can be posted and retrieved.

$post = http_build_query(array(
    "username" => "postuser",
    "password" => "postpassword",
    "example" => "any data",
));

$context = stream_context_create(array("http"=>array(
     "method" => "POST",
     "header" => "Content-Type: application/x-www-form-urlencoded\r\n" .
                 "Content-Length: ". strlen($post) . "\r\n",  
     "content" => $post,
))); 

$page = file_get_contents("http://example.com/login.php", false, $context);

The posted data can be retrieved at the other end i.e. login.php as a normal post
variable in the following fashion.

echo $_POST['username'];

echo $_POST['password'];

echo $_POST['example']; 

Sorting a Map by its keys in Java

The key is to use TreeMap or convert the HashMap to TreeMap as done below. 

Map<String, String> map = new HashMap<String, String>();        
Map<String, String> treeMap = new TreeMap<String, String>(map);

Update a row in in the same table with the data of another row in MySQL

UPDATE biometric_image dt1, biometric_image dt2
SET dt1.cam_img = dt2.cam_img
WHERE  (dt1.comcaseno='775/2012' AND dt1.partytype='seller' AND dt1.partyserial='1') AND (dt2.comcaseno='775/2012' AND dt2.partytype='drafter' AND dt2.partyserial='1')

include JavaScript file in JSF

In JSF 2.0, you can use <h:outputScript /> tag in the <h:head> section to render a HTML “script” element, and link it to a js file. For example,

<h:outputScript library="js" name="common.js" />

It will generate following HTML output

<script type="text/javascript" 
   src="/JavaServerFaces/faces/javax.faces.resource/common.js?ln=js">
</script>

The directory hierarchy is as below.

Clean URL's and apache mod_rewrite

After a lot of brain storming and googling around I could fix the issue of Clean URLs which were not working even after having all the configurations right as per my post http://webtecblog.blogspot.in/2012/06/removing-indexphp-from-codeigniter-urls.html. The following modifications in httpd.conf saved my life.

The default settings were
<Directory />
    Options FollowSymLinks
    AllowOverride None
    Order deny,allow
    Allow from all
</Directory>

which I modified to

<Directory />
    Options Indexes FollowSymLinks Includes ExecCGI
    AllowOverride All
    Order deny,allow
    Allow from all
</Directory>

And things started working for me. Hope this helps others as well.

Having a Date Time in a String in Java

  The following code snippet can be helpful in having a Date Time as a String in Java.

            Date dNow = new Date( );
            SimpleDateFormat ft = new SimpleDateFormat("dd:MM:yy HH:mm:ss");
            String date = ft.format(dNow.getTime());

  In the SimpleDateFormate constructor different date formats can be supplied as input.

Input from console in Java

Taking input values for console application can come out as a need at times. To take such inputs the following code snippet can be used.
 
        try {
            System.out.print("Enter input value: ");
            BufferedReader bufferRead = new BufferedReader(new InputStreamReader(System.in));
   String in = bufferRead.readLine();
            System.out.println("The entered value is "+in);
         
        } catch (IOException ex) {
            Logger.getLogger(LogManager.class.getName()).log(Level.SEVERE, null, ex);
        }