Apache Velocity StringResourceLoader and GenericTools

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Date;

import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.Velocity;
import org.apache.velocity.runtime.resource.loader.StringResourceLoader;
import org.apache.velocity.runtime.resource.util.StringResourceRepository;
import org.apache.velocity.tools.generic.DateTool;

public class Main {

  public static void main(String[] args) throws Exception {
    Velocity.setProperty("resource.loader", "string");
    Velocity.setProperty("string.resource.loader.class",
      "org.apache.velocity.runtime.resource.loader.StringResourceLoader");
    Velocity.setProperty("string.resource.loader.repository.class",
      "org.apache.velocity.runtime.resource.util.StringResourceRepositoryImpl");
    Velocity.init();

    StringWriter templateString = new StringWriter();
    PrintWriter pw = new PrintWriter(templateString);

    pw.println("    Name: $name");
    pw.println("     Age: $age");
    pw.println("birthday: $date.format('yyyy-MM-dd', $birthday)");
    
    StringResourceRepository repo = StringResourceLoader.getRepository();
    repo.putStringResource("test.vm", templateString.getBuffer().toString());
    
    Template template = Velocity.getTemplate("test.vm");
    
    VelocityContext context = new VelocityContext();
    context.put("date", new DateTool());
    
    context.put("name", "Solnone");
    context.put("age", new Integer(37));
    Date birthday = new Date();
    context.put("birthday", birthday);

    StringWriter sw = new StringWriter();
    template.merge(context, sw);
    System.out.println(sw);

  }

}