VelocityConventions

RuntimeServices runtimeServices = RuntimeSingleton.getRuntimeServices();
// renderKeyValueMap comprises of the java object(s) reference in
// velocity template as keys and java object(s) as values
VelocityContext velocityContext = new VelocityContext(renderKeyValueMap);
 
// Incorrect way of passing a custom template string for rendering
// Note that templateBody is pre-fetched from the database
StringReader reader = new StringReader(templateBody);
SimpleNode node = runtimeServices.parse(reader, templateBody);
 
Template template = new Template();
template.setRuntimeServices(runtimeServices);
template.setData(node);
template.initDocument();
 
StringWriter populatedVelocityTemplate = new StringWriter();
template.merge(velocityContext, populatedVelocityTemplate);