why this doesn't work ? please help.

Hi, ALL,

I try to use Freemarker to do a code generation. I am a new to this. 
Here is the coding, but it doesn't work, it complains

freemarker.core.InvalidReferenceException: Expression fld.name is 
undefined on line 3, column 19 in src/example.ftl.

Could you please tell me the reason ?

Here is the java code and template file.

Thanks.
Edward



////////////// code //////////
package com;

import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import freemarker.template.Configuration;
import freemarker.template.Template;

public class Test {

    public static void main(String[] args) {

        try {
            Configuration cfg = new Configuration();

            Map datamodel = new HashMap();
            datamodel.put("CName", "Employee");       
            datamodel.put("fldList", getFld());

            Template tpl = cfg.getTemplate("./src/example.ftl");

            OutputStreamWriter output = new OutputStreamWriter(System.out);
            tpl.process(datamodel, output);

        } catch (Exception e) {
            e.printStackTrace();

        }

    }
   
    public static ArrayList<Field> getFld() {
        ArrayList<Field> list = new ArrayList<Field>();
        list.add(new Field("String", "name"));   
        return list;
    }

}

class Field {
    public String name;
    public String type;
   
    public Field(){    }
   
    public Field(String type, String name){
        this.type = type;
        this.name = name;           
    }
   
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    @Override
    public String toString() {       
        return this.name+"--"+this.type;
    }


}

////////////////// FTL template ////////////
public class ${CName}{
    <#list fldList as fld>
        ${fld.name}       
    </#list>    
}





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