Java Utililty Methods Is Json

try {
    final ObjectMapper mapper = new ObjectMapper();
    mapper.readTree(jsonInString);
    return true;
} catch (IOException e) {
    return false;

boolean valid = false;
try {
    final JsonParser parser = new ObjectMapper().getFactory().createParser(json);
    while (parser.nextToken() != null) {
    valid = true;
} catch (JsonParseException jpe) {
    jpe.printStackTrace();
...

boolean output = false;
if (expectedJSON != null && actualJSON != null) {
    JsonNode expNode = convertToJSONNode(expectedJSON);
    JsonNode actualNode = convertToJSONNode(actualJSON);
    output = expNode.equals(actualNode);
} else if (expectedJSON == null && actualJSON == null) {
    output = true;
return output;

boolean valid = false;
try {
    ObjectMapper objectMapper = new ObjectMapper();
    objectMapper.readTree(json);
} catch (IOException e) {
    valid = false;
return valid;
...

boolean valid = true;
try {
    ObjectMapper mapper = new ObjectMapper();
    mapper.readTree(json);
} catch (JsonProcessingException e) {
    valid = false;
return valid;
...

try {
    final JsonParser parser = new ObjectMapper().getFactory().createParser(json);
    while (parser.nextToken() != null) {
    return true;
} catch (JsonParseException jpe) {
    return false;
} catch (IOException ioe) {
...