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Wednesday, July 20, 2011

How to get session attribute in struts 2 tag

                           How to get session attribute in struts 2  <s:if test> tag


<s:if test='%{#session.USERID != null}' >
        // do something
</s:if>
<s:else if test='%{#session.USERID =="admin"}' >
   // if user is admin in USERID attribute of session, do something
  </s:else if>

<s:else>
   //do other things
</s:else>

Validate URL using Java Script

Validate URL using Java Script

/*   Java Script code-----------------------------
--------------------------------------------------------------------------------------------------
function isUrl(urlByUser) {   
       var regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/;
       return regexp.test(urlByUser);
  }

// Here "FieldName" is the id of HTML element in your html form
if((isUrl(document.getElementById("FieldName").value))){    
  alert(''Valid URL");                                                              
   return true;       
              
         }
else{
 alert(''Sorry, invalid walk URL.  Please enter URL starts with http:// or www.");
   return false;
}
--------------------------------------------------------------------------------------------------
*/

Tuesday, July 19, 2011

How to get Height and Width of an image using java script :client side validation

      Validate Image height and width before uploading

----------------------------------------------------------------------------------
/*
   <script language="javascript">

        function getWidth()

        {

            var testImage = document.getElementById('testImage');

            alert(testImage.clientWidth);

        }

        function getHeight()

        {

            var testImage = document.getElementById('testImage');

            alert(testImage.clientHeight);

        }

        </script>
*/

// HTML code

<!---

<BODY>

        <input type="file" id="testImage" value="browse"/>

        <input type="button" value="get Width" onclick="getWidth()"/>

        <input type="button" value="get Height" onclick="getHeight()"/>

    </BODY>

--->
------------------------------------------------------------------------------------------

How to Converts YYYY-MM-DD to dd.MM.yyyy format in java as date in String

  Converts YYYY-MM-DD to dd.MM.yyyy format in java as (date in String)
=========================================================
public static String getDateFormatDDMMYYY(String dateStr) {
        String[] dateParts = dateStr.split("-");
        StringBuffer sb = new StringBuffer();
        for (int ii=dateParts.length-1; ii>0; ii--) {
          sb.append( dateParts[ii] + "." );
        }
        sb.append( dateParts[0] );
        return sb.toString();
    }
===========================================================

Monday, July 11, 2011

Convert String to date in java

 Convert String(yyyy-MM-dd HH:mm:ss ) to date in java
---------------------------------------------------------------------------
public static Date getCurrentTimeStamp(){
        String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss";
        DateFormat formatter= new SimpleDateFormat(DATE_FORMAT);
        Calendar c1 = Calendar.getInstance(); // today
      
        System.out.println("Today is " + formatter.format(c1.getTime()));
       
        try {
           
            Date date = (Date)formatter.parse(formatter.format(c1.getTime()));
             System.out.println("Date after converted from string: " + date);
             return date;
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return null;
        }
      
      }

Updating more than 1 column of a table in MYSQL

Updating more than 1 column of a table in MYSQL

===============================================
UPDATE tablename SET col1=?,col2=?  WHERE col3 = ?"

? = your own value, what you want to update on what condition.
===============================================

Date Format(yyyy-MM-dd HH:mm:ss) in java

 Date Format(yyyy-MM-dd HH:mm:ss) in java
 ============================================================
public static String getCurrentTimeStamp(){
        String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss";
        SimpleDateFormat sdf =
              new SimpleDateFormat(DATE_FORMAT);
        Calendar c1 = Calendar.getInstance(); // current date and time by system
        System.out.println("Today is " + sdf.format(c1.getTime()));
        return sdf.format(c1.getTime());
      }
============================================================