Understanding Class Loaders in JAVA

 

Velocity - How to iterate a Map/List and format Date and Numbers:

For our example, lets take the student class as our model object. 

student class diagram

Velocity - Iterate a List : 

List<Student> studentList = new ArrayList<Student>();
Date date = new GregorianCalendar().getTime();
studentList.add( new Student("Amitabh", "Bachhan", 96.4563, date ) );
studentList.add( new Student("John", "Smith", 89.456, date ) );
studentList.add( new Student("Leonardo", "Decaprio", 65.34244, new GregorianCalendar().getTime() ) );
studentList.add( new Student("Kate", "Winslet", 55.90744, new GregorianCalendar().getTime() ) );



#foreach ($student in $studentList)
    <tr>
      	<td>$stu.firstName</td>
	<td>$stu.lastName</td>
	<td>$number.format("#0.00",$stu.marksPercentage)</font></td>
        <td>$date.format('short',$stu.datEnrolled)</font></td>
    </tr>
#end


Velocity - Iterate a Map: 

Map<Integer,Student> studentMap = new HashMap<Integer,Student>();
studentMap.put(1, new Student("Amitabh", "Bachhan", 96.4563, date ));
studentMap.put(2, new Student("John", "Smith", 89.456, date ) );
studentMap.put(3,  new Student("Leonardo", "Decaprio", 65.34244, new GregorianCalendar().getTime() ));



 #set ($map = $studentMap )
 #foreach ($mapEntry in $map.entrySet())
    <tr>
       	<td>Student ID : $mapEntry.key</td>
       	<td>$mapEntry.value.firstName</td>
	<td>$mapEntry.value.lastName</td>
	<td>$mapEntry.value.marksPercentage</td>
	<td>$mapEntry.value.datEnrolled </td>
    </tr>
 #end


Velocity - Format Date:

$date.format('short',$stu.datEnrolled)


Velocity - Format Number:


$number.format("#0.00",$stu.marksPercentage)


Velocity if else condition:

#if ($mapEntry.key == 1)
  <h2>You are a top student!</h2>
#else
  <h2>You are not a top student!</h2>
#end



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