Json pretty-print an object

JsonPretty.java

import org.codehaus.jackson.map.ObjectMapper;
import java.io.IOException;

import static org.codehaus.jackson.map.SerializationConfig.Feature.INDENT_OUTPUT;

public class JsonPretty { 
   private static final ObjectMapper mapper = new ObjectMapper().configure(INDENT_OUTPUT, true);

    public static String toPrettyJson(Object instance)
    {
        try {
            return mapper.writeValueAsString(instance);
        }
        catch (IOException e) {
            throw new IllegalArgumentException(String.format("%s could not be converted to json", instance.getClass().getName()), e);
        }
    }
}