Java Jackson JSON

JacksonExample.java

package arsenvlad;

import java.util.Calendar;

public class JacksonExample {
    private String fieldOne;
    private String fieldTwo;
    private Calendar someDate;

    public String getFieldOne() {
        return fieldOne;
    }

    public void setFieldOne(String fieldOne) {
        this.fieldOne = fieldOne;
    }

    public String getFieldTwo() {
        return fieldTwo;
    }

    public void setFieldTwo(String fieldTwo) {
        this.fieldTwo = fieldTwo;
    }

    public Calendar getSomeDate() {
        return someDate;
    }

    public void setSomeDate(Calendar someDate) {
        this.someDate = someDate;
    }
}

main-snippet.java

public static void main(String[] args) {
        try {
            List<arsenvlad.JacksonExample> list = new ArrayList<arsenvlad.JacksonExample>();
            for (int i=0; i<3; i++) {
                arsenvlad.JacksonExample o = new arsenvlad.JacksonExample();
                o.setFieldOne("fieldOneValue");
                o.setFieldTwo("fieldTwoValue");
                o.setSomeDate(Calendar.getInstance());
                list.add(o);
            }

            ObjectMapper mapper = new ObjectMapper();
            DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm a z");
            mapper.setDateFormat(df);
            mapper.enable(SerializationFeature.INDENT_OUTPUT);
            String json = mapper.writeValueAsString(list);

            System.out.println(json);
        } catch (JsonProcessingException ex) { }
}

output.txt

[ {
  "fieldOne" : "fieldOneValue",
  "fieldTwo" : "fieldTwoValue",
  "someDate" : "2020-03-24 17:42 PM CDT"
}, {
  "fieldOne" : "fieldOneValue",
  "fieldTwo" : "fieldTwoValue",
  "someDate" : "2020-03-24 17:42 PM CDT"
}, {
  "fieldOne" : "fieldOneValue",
  "fieldTwo" : "fieldTwoValue",
  "someDate" : "2020-03-24 17:42 PM CDT"
} ]