import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;

public class JacksonSimple {

    public static void main(String[] args) {
        readValue();
    }

    private static void readValue() {
        ObjectMapper mapper = new ObjectMapper();
        String filepath = System.getProperty("user.dir") + File.separator
                + "user.json";
        try {
            User user = (User) mapper.readValue(new FileInputStream(filepath),
                    User.class);
            System.out.println(user);
        } catch (IOException ex) {
            Logger.getLogger(JacksonSimple.class.getName())
                    .log(Level.SEVERE, null, ex);
        }
    }
}