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Port of jsonata.js to Java to enable rules for JSON content

There is a newer version: 2.5.1

package com.api.jsonata4java;

import java.io.IOException;

import com.api.jsonata4java.expressions.EvaluateException;
import com.api.jsonata4java.expressions.EvaluateRuntimeException;
import com.api.jsonata4java.expressions.Expressions;
import com.api.jsonata4java.expressions.ParseException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

public class Test {

	public static void main(String[] args) {
		Expressions expr = null;
		ObjectMapper mapper = new ObjectMapper();
		JsonNode jsonObj = null;
		String json = "{ \"a\":1, \"b\":2, \"c\":[1,2,3,4,5] }";
		String expression = "$sum(c)";
		try {
			jsonObj = mapper.readTree(json);
		} catch (IOException e1) {
			e1.printStackTrace();
		}

		try {
			System.out.println("Using json:\n" + mapper.writerWithDefaultPrettyPrinter().writeValueAsString(jsonObj));
			System.out.println("expression=" + expression);
			expr = Expressions.parse(expression);
		} catch (ParseException e) {
			System.err.println(e.getLocalizedMessage());
		} catch (EvaluateRuntimeException ere) {
			System.err.println(ere.getLocalizedMessage());
		} catch (JsonProcessingException e) {
			e.printStackTrace();
		} catch (IOException ioe) {
		   System.err.println(ioe.getLocalizedMessage());
      }
		try {
			System.out.println("evaluate returns:");
			JsonNode result = expr.evaluate(jsonObj);
			if (result == null) {
				System.out.println("** no match **");
			} else {
				System.out.println("" + mapper.writerWithDefaultPrettyPrinter().writeValueAsString(result));
			}
		} catch (EvaluateException | JsonProcessingException e) {
			System.err.println(e.getLocalizedMessage());
		}
	}

}