Newbie Codes: March 2014

Thursday 6 March 2014

Simple Date Formats and Converting a string to a particular date format wilth all the Date Format Definations in Java

SimpleDateFormat is a Java class that handles the date fromats. There are some basic rules followed in defining the custom date fromat.

E - represents first 3 letters of the day of the week like (Ex: Sun, Mon, Tue etc..)

EEEE - represents the full name of the day (Ex: Sunday, Monday etc..)

yy - represents the last two digits of the year (Ex: 14 for 2014)

yyyy - represents the year (Ex: 2013,2014 etc..)

M - represents the month number (Ex: 1 for January, 2 for February, 11 for November etc..)

MM - represents the month in number with a preceded 0 (Ex: 01 for January, 02 fro February etc..)

MMM - represents the month in text with first 3 characters of the month (Ex: Jan, Feb, Mar Apr etc..)

MMMM or M's >3 - represents the full text of the month (Ex: January, February, March etc)

dd - represents the day in number with preceding zero for numbers less than 10. (Ex: 01, 02 etc..)
          (increasing each d will put a preceding 0 for example for ddd 1 becomes 001 which is not used as the day are not more than 31 in a month)

H - represents the number of hour in 24 hours format (Ex: 1,2, 12 18, 24 etc..)

HH - represents the hour in 24 hours format with the preceding 0 (Ex: 01,02,03, 18,24 etc..)

h - represents the hour in 12 hours format ((Ex: 1,2, 12 etc..)

hh - represents the hour in 12 hours format with the preceding 0 (Ex: 01,02,03,12 etc..)

m - represents the minutes (Ex: 1, 2, 3, 59 etc..)

mm - represents the minutes with preceding 0. (Ex: 01, 02, 03, 59 etc..)

ss - for seconds withe preceding 0 (Ex: 01, 02, 03, 59 etc..)

a - represents the AM/PM.

z or zz or zzz - represents the 3 lettered Time Zone (Ex: CST, UST, IST etc..)

zzzz - represents the full Time Zone name (Ex: Central Standard Time, Indian Standard Time etc..)

Example:
Here is an example code for the Date formats.
The special characters are used for the user readable format users can put what they like most.

import java.text.SimpleDateFormat;
import java.util.Date;

public class HelloWorld{

     public static void main(String []args){
        System.out.println("Simple Date Format test program");

        SimpleDateFormat sd=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss zzzz");
        Date now =new Date(); //The object new will have the current date

        System.out.println(now);
        System.out.println(sd.format(now));

     }
}

How to disable mouse right click in HTML

Method 1:

Easiest way of disabling the mouse right click in the websites is by just adding the "oncontextmenu" attribute in body tag.

Example:
<html>
<body oncontextmenu="return false">
<h1>Disabling the Mouse Right Click in HTML.</h1>
<p>
This is a test paragraph for to demonstrate the disabling of mouse right click.
<em color="red">Right Click on me.</em></p>
</body>
</html>

Note:
If you don't want to disable the context menu on the whole page and if you want to disable a single element in html you need to write the oncontextmenu="return false" attribute in that particular tag.

Method 2:

Here is another way of disabling the mouse right click in the websites is by adding some javascript in the script tag. In this method you can give the alert to the user saying that the "Mouse right click is disabled in this page".

<html>
<head>
<script>
document.oncontextmenu = function() {
alert('Mouse right click is disabled on this page!') ;
}
</script>
</head>
<body>
<h1>Disabling the Mouse Right Click in HTML.</h1>
<p>
This is a test paragraph for to demonstrate the disabling of mouse right click.
<em color="red">Right Click on me.</em></p>
</body>
</html>

Newbie Codes

Pages

Thursday 6 March 2014

Simple Date Formats and Converting a string to a particular date format wilth all the Date Format Definations in Java

How to disable mouse right click in HTML

My Favourite Sites