How to use Map in velocity

This Example shows you how to use map in velocity.


 
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How to use Map in velocity

     

This Example shows you how to use map in velocity. The method used in this example are described below:-  
1:- Initialize velocity run time engine through method  init().
2:- Create object of VelocityContext Class.
3:- Create Template class object, Template  class object is used for controlling template methods and properties.

template.merge(context, writer): Merge method of the Template class is used here for merging  the VelocityContext class object to produce the output.

 

 

 

 

MapClass.java

import java.io.*;
import java.util.*;
import org.apache.velocity.*;
import org.apache.velocity.app.*;

public class MapClass {

  public static void main(String[] args)
  throws Exception {
  VelocityEngine ve = new VelocityEngine();
  ve.init();

  ArrayList list = new ArrayList();
  Map map = new HashMap();

  map.put("rno""1");
  map.put("name""komal");
  map.put("libno"1001);
  list.add(map);

  map = new HashMap();
  map.put("rno""2");
  map.put("name""santosh");
  map.put("libno"1002);
  list.add(map);

  map = new HashMap();
  map.put("rno""3");
  map.put("name""ajay");
  map.put("libno"1003);
  list.add(map);

  VelocityContext context = new VelocityContext();
  context.put("stuList", list);
  Template t = ve.getTemplate("./src/velocity/XMLOutput/xml.vm");
  StringWriter writer = new StringWriter();

  t.merge(context, writer);
  System.out.println(writer.toString());
  }
}

map.vm

Student:

#foreach( $stu in $stuList )
    $stu.rno
  $stu.name
  $stu.libno

#end

Output :

Student:
1
komal
1001

2
Santosh
1002

3
Ajay
1003

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How to use Map in velocity

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