import spark.Request; import spark.Response; import spark.Route; import spark.Spark; public class TestSparkJavaApplication { public static void main(final String[] args) { Spark.get("/", new Route() { @Override public Object handle(Request request, Response response) throws Exception { return "Hello World"; } }); Spark.get("/param/:param", new Route() { @Override public Object handle(Request request, Response response) throws Exception { return "Hello " + request.params("param"); } }); Spark.get("/exception/:param", new Route() { @Override public Object handle(Request request, Response response) throws Exception { throw new RuntimeException(request.params("param")); } }); } }