Working with ObjectMapper from Jackson (JSON processor for Java) to format/parse String arrays

JacksonTest.java

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.Test;
import org.springframework.transaction.annotation.Transactional;

import java.io.IOException;

import static org.junit.Assert.assertEquals;

@Transactional
public class JacksonTest {

    @Test
    public void testArrayToJson() {
        String[] parameters = { "apple", "lemon", "banana" };

        ObjectMapper objectMapper = new ObjectMapper();
        String list = null;

        try {
           list = objectMapper.writeValueAsString(parameters);
        } catch (JsonProcessingException ex ) {
        }

        assertEquals(list, "[\"apple\",\"lemon\",\"banana\"]");
    }

    @Test
    public void testJsonToArray() {
        ObjectMapper objectMapper = new ObjectMapper();

        String jsonList = "[\"apple\", \"lemon\", \"banana\"]";
        String[] list = null;

        try {
            list = objectMapper.readValue(jsonList, String[].class);
        } catch (IOException e) {
        }

        assertEquals(list[0], "apple");
        assertEquals(list[1], "lemon");
        assertEquals(list[2], "banana");
    }


    @Test
    public void testEmptyArrayToJson() {
        String[] parameters = { };

        ObjectMapper objectMapper = new ObjectMapper();
        String list = null;

        try {
            list = objectMapper.writeValueAsString(parameters);
        } catch (JsonProcessingException ex ) {
        }

        assertEquals(list, "[]");
    }

    @Test
    public void testEmptyJsonToArray() {
        ObjectMapper objectMapper = new ObjectMapper();

        String jsonList = "[]";
        String[] list = null;

        try {
            list = objectMapper.readValue(jsonList, String[].class);
        } catch (IOException e) {
        }

        assertEquals(list.length, 0);
    }


    @Test
    public void testArrayWithTextToJsonAndBackToArray() {
        String text = "\"Be or not to be\nThat's the question\"\n(Shakespare)";

        String[] parameters = { text };

        ObjectMapper objectMapper = new ObjectMapper();
        String[] list = null;

        try {
            String jsonList = objectMapper.writeValueAsString(parameters);
            list = objectMapper.readValue(jsonList, String[].class);
        }
        catch (JsonProcessingException ex ) {
        }
        catch (IOException ex) {
        }

        assertEquals(list.length, 1);
        assertEquals(list[0], text);
    }

}