Empty string fields to null using java reflection for given object recursively

 While working in project, we got requirement to not include empty xml tags while converting java pojo to XML. if we pass empty string fields to in java pojo, it adds empty tag for that filed. to avoid it, i have written below program which will take the object as parameter and convert all empty string fields to null using java reflection recursively.

	import java.lang.reflect.Field;
	import java.lang.reflect.InvocationTargetException;
	import java.lang.reflect.Method;
	import java.lang.reflect.ParameterizedType;
	import java.util.List;
	import java.util.Map;
	import java.util.Set;
	/**
	* @author Sachin Rane on 7/1/21
	*/
	public class ReflectionUtils {
	public static void main(String[] args) {
	Employee employee = new Employee();
	employee.setName("Sachin");
	employee.setCity("");//this will set to null
	replaceAllEmptyStringFieldsWithNull(employee);
	if (null == employee.getCity()) {
	System.out.println("replaceAllEmptyStringFieldsWithNull converted blank string to null");
	}
	}
	public static void replaceAllEmptyStringFieldsWithNull(Object object) {
	if (null == object) {
	return;
	}
	Method[] methodsOfObject = object.getClass().getDeclaredMethods();
	Method methodRef = null;
	try {
	for (Method method : methodsOfObject) {
	methodRef = method;
	method.setAccessible(true);
	if (isGetType(method)) {
	//skip list, set, map or array objects
	if (skipObjectsCheck(method)) {
	continue;
	}
	if (method.getReturnType() == String.class) {
	String value = (String) method.invoke(object);
	if ("".equals(value)) {
	Field field = getFieldByFieldName(object, method.getName().replace("get", ""));
	if (null != field) {
	field.setAccessible(true);
	field.set(object, null);
	}
	}
	} else {
	replaceAllEmptyStringFieldsWithNull(method.invoke(object));
	}
	}
	}
	} catch (IllegalAccessException ex) {
	System.out.println("IllegalAccessException while invoking method for class : " + object.getClass().getName()
	+ " and method : " + (null != methodRef ? methodRef.getName() : null));
	} catch (InvocationTargetException ex) {
	System.out.println("InvocationTargetException while invoking method for class : " + object.getClass().getName()
	+ " and method : " + (null != methodRef ? methodRef.getName() : null));
	}
	}
	static boolean skipObjectsCheck(Method method) {
	if (method.getReturnType().isArray()) return true;
	if (!(method.getGenericReturnType() instanceof ParameterizedType)) return false;
	ParameterizedType parametrizedReturnType = (ParameterizedType) method.getGenericReturnType();
	if (parametrizedReturnType.getRawType() == List.class
	|| parametrizedReturnType.getRawType() == Set.class
	|| parametrizedReturnType.getRawType() == Map.class) {
	return true;
	}
	return false;
	}
	static Field getFieldByFieldName(Object obj, String fieldName) {
	Field[] fields = obj.getClass().getDeclaredFields();
	for(Field f : fields){
	if (f.getName().equalsIgnoreCase(fieldName)) {
	return f;
	}
	}
	return null;
	}
	static boolean isGetType(Method method) {
	if (method.getName().startsWith("get")) return true;
	return false;
	}
	private static class Employee {
	String name;
	String city;
	List<String> list;
	public String getName() {
	return name;
	}
	public void setName(String name) {
	this.name = name;
	}
	public String getCity() {
	return city;
	}
	public void setCity(String city) {
	this.city = city;
	}
	public List<String> getList() {
	return list;
	}
	public void setList(List<String> list) {
	this.list = list;
	}
	}
	}

GIT URL: https://github.com/ranesaci/mylearnings/blob/master/src/main/java/reflection/ReflectionUtils.java