Q Explain System.out.println ?
A:->
System:-It is the final class and its constructor is
private.so we can not create new object of System.
out. it is the static member of the System class of type
java.io.PrintStrem.
println:-it is the overload function of PrintStream.
Hi Friends,
I finsished up with my project work early today. So, i thought of writing to this blog. I found an inbuilt way of decompiling the java class file that contains the binary data. Yes, jdk provides an inbuilt command that is javap.
Using javap you can decompile the java file. Folks, many of us might be using 3rd party tools like cavaj to decompile the class file, but java has its own way of doing this. Below is the example on how to do this.
c:\> javap Ujjwal.class
Cheers!
Ujjwal Soni
Maximize/minimize the selected window - Ctrl +MThis is what most used ones. You also can submit if i missed important ones in commnets.
Generate getters/setter - Alt+Shift+s + r
Override/implement methods - Alt+Shift+s + v
Show type implementation - Ctrl+T on selected type in java file
quick class member browser - Ctrl+o
search usage of selected member - Ctrl+Alt+H
comment/uncomment selected lines - ctrl+/
Open declaration - F3
Hi,
There is a file named 'netbeans.conf' which can be found in
Example:
netbeans_default_options="-J-Xms384m -J-Xmx512m -J-XX:PermSize=32m -J-XX:MaxPermSize=96m -J-Xverify:none"
This example will allow NetBeans to run with a minimum of 384 megabytes of RAM and a maximum of 512 megabytes of RAM.
Cheers!
Ujjwal B Soni
Well, not long ago a lot of services were free online ranging from Free Magazines,email accounts,hosting services and even domain names !! . Every online user just like US i.e YOU and ME wants to have a lil bit more .. after all whats harm in lil competition .Well! one such service is www.Gmail.com … www.Google.com has a long history of satisfying customers and hey! free service has no competitors ,right!! . Not to forget one more such service which is called www.160by2.com it allows people to send free 80 chars msgs anywhere in India.(rest 80 chars reserved for advt.)
I have been a loyal user of www.Gmail.com from past few months , apart from latest developments & added features the one and only one eagerly awaited feature which is yet to launched is Gmail Mobile Alerts for India . Google has made no such official anouncement , but fortunately they will be going to offer this service soon.
Hence,My attempt here in this article is to combine two services i.e Gmail and 160by2 , so that what we have is a khichdi which ,guess wat, serves us and gives us a Customized Gtalk Mobile Alert Xclusive for India .. that too absolutely GRATIS!!
Disclaimer:Following code are not written by me from scratch . Following code belong to their respective authors which are taken from various sources such as PHP.net or other Forum(s). I do to intend to take the credit for the following code nor propose some one else ,for whom this code may be usefull, to do the same. I have just made few modification so that it serves the purpose . It does not intends to exploit the service offered by either Gmail or 160by2.
So here we go!
Requirement : Two hands (to Programm :p) , A php hosting (I use www.Freehost.ag) , knowledge of CronJob and some <?php?>
1. Attempt: To fetch the number of unread mails from Gmail account . After repeating attempt I am not able to access gmail using Imap enabled in Setting section. Hence the only alternative is to have access thru gmail atom feed which serves us well .
Class gmailCount{
function msgCount(){
$username = "Username";
$password = "Password";
// Initialise cURL
$c = curl_init('https://gmail.google.com/gmail/feed/atom');
$headers = array(
"Host: gmail.google.com",
"Authorization: Basic ".base64_encode($username.':'.$password),
"User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8.0.4) Gecko/20060508 Firefox/1.5.0.4″,
"Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5″,
"Accept-Language: en-gb,en;q=0.5″,
"Accept-Encoding: text",
"Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7″,
"Date: ".date(DATE_RFC822)
);
curl_setopt($c, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($c, CURLOPT_COOKIESESSION, true);
curl_setopt($c, CURLOPT_HTTPHEADER, $headers);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($c, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($c, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($c, CURLOPT_SSL_VERIFYHOST, 1);
curl_setopt($c, CURLOPT_UNRESTRICTED_AUTH, 1);
curl_setopt($c, CURLOPT_SSL_VERIFYHOST, 1);
$str = curl_exec($c);
preg_match('#<fullcount>(.*)</fullcount>#', $str, $array); // Use a regex to get what's between <fullcount>(.*)</fullcount>
return strip_tags($array[0]); //stripts all HTML Tag from the given string
curl_close($c);
}
}
Above Code uses Curl , I believe it is one of the most over-used functionality in PHP. So! basically Class gmailCount{} fetches the number of new mails from username@gmail.com and returns the number when msgCount() function is invoked from its object .
2. Attempt : Following Code tried to establish connection with www.160by2.com
Class sendSms{
function sendMsg($nuOfMsg){
$username = "Username";
$password = "Password";
// INIT CURL
$ch = curl_init();
// SET URL FOR THE POST FORM LOGIN
curl_setopt($ch, CURLOPT_URL, 'http://www.160by2.com/LoginCheck.aspx');
// ENABLE HTTP POST
curl_setopt ($ch, CURLOPT_POST, 1);
// SET POST PARAMETERS : FORM VALUES FOR EACH FIELD
curl_setopt ($ch, CURLOPT_POSTFIELDS, 'htxt_UserName=' . $username . '&txt_Passwd=' . $password);
// IMITATE CLASSIC BROWSER'S BEHAVIOUR : HANDLE COOKIES
curl_setopt ($ch, CURLOPT_COOKIEJAR, 'cookie.txt');
# Setting CURLOPT_RETURNTRANSFER variable to 1 will force cURL
# not to print out the results of its query.
# Instead, it will return the results as a string return value
# from curl_exec() instead of the usual true/false.
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
// EXECUTE 1st REQUEST (FORM LOGIN)
$store = curl_exec ($ch);
// SET PAGE TO SMS COMPOSE
curl_setopt($ch, CURLOPT_URL, 'http://www.160by2.com/postview.aspx');
// EXECUTE 2nd REQUEST
$store = curl_exec ($ch);
/* SET POST PARAMETERS : FORM VALUES FOR EACH FIELD. Replace 'MobileNumber. with your number with no preceding zeroes or 91.It shud be strictly 10 digit number . The Second 'MobileNumber' should also follow the same i.e write only 10 digit mobile number. */
curl_setopt ($ch, CURLOPT_POSTFIELDS, 'txt_mobileno=MobileNumber&txt_msg=Total NEW Mails in Username@gmail is:' . $nuOfMsg . '&act_mnos=91MobileNumber');
// EXECUTE 2nd REQUEST
curl_exec ($ch);
// CLOSE CURL
curl_close ($ch);
}
}
Logs into www.160by2.com , stores the cookie so that it gives an illusion of a real browser and function sendMsg() receives the number of New mails as an argument and broadcasts it as content of the SMS . Remember , if u change the content it should NOT be more then 80 Chars as rest will be truncated.
3.Attempt : Objects are created from both the classes and a Text file is created to store the number of new mail which was fetched from the last request , the next subsequent requests deducts this number from the data stored in this file and passes this to sendMsg()
//CREATE THE NECESSARY OBJECT(S) FROM THE CLASSES
$obj=new gmailCount();
$obj2=new sendSms();
$myFile = "msgCount.txt";
$stringData = $obj->msgCount();
if(!file_exists($myFile)){
$fh = fopen($myFile, 'w') or die("can't open file");
fwrite($fh, $stringData);
$obj2->sendMsg($stringData - $stringData);
}
else {
$fh = fopen($myFile, 'r') or die("can't open file");
$theData = fread($fh, filesize($myFile));
fclose($fh);
$fh = fopen($myFile, 'w+') or die("can't open file");
fwrite($fh, $stringData);
if (($stringData - $theData) != 0) $obj2->sendMsg($stringData - $theData);
fclose($fh);
Voila! There you have it , your own customized Gmail Mobile Alert!
4. Attempt : Setup a CronJob so that this script runs after specified minutes/hours/days/weekdays/months.
If you have suggestions or Questions , feel free to drop your comments.
