String template = "<html>" +
"<head><title>$title</title></head>" +
"<body>" +
"<h1>$heading</h1>" +
"<p>$content</p>" +
"</body>" +
"</html>";
Engine engine = new Engine();
engine.registerTemplate("myTemplate", template);
Context context = new Context();
String output = engine.evaluateTemplate("myTemplate", context);
System.out.println(output);
