My thoughts on the equals method (Java)

I made it because I wanted to compare beans with JUnit.

 *Convenient equals method
 *OK even if the equals method is not implemented.I'll also check the superclass fields.
 * @param a
 * @param b
 * @return
public static boolean reflectEquals( Object a, Object b ){
        if (a == b) {
            return true;
        if (a == null || b == null ) {
            return a == b;
        if (a.getClass() != b.getClass()) {
            return false;
        boolean useBuildinEqualsFlg = a.getClass().getName().startsWith("java.lang");
        if( useBuildinEqualsFlg ){
                Method equalsMethod = a.getClass().getDeclaredMethod("equals", Object.class);
                boolean eqFlg = Boolean.class.cast( equalsMethod.invoke(a, b) );
                return eqFlg;
            }catch( NoSuchMethodException e ) {
                String aStr = a.toString();
                String bStr = b.toString();
                boolean eqFlg = aStr.equals(bStr);
                return eqFlg;
            if( a instanceof List ) {
                a = ((List<Object>) a).toArray();
                b = ((List<Object>) b).toArray();
            if( a.getClass().isArray() ) {
                int aLen = Array.getLength(a);
                int bLen = Array.getLength(b);
                if( aLen != bLen ) {
                    return false;
                for( int i = 0;i<aLen;i++) {
                    Object aElement= Array.get(a, i);
                    Object bElement= Array.get(b, i);
                    if( !reflectEquals( aElement, bElement ) ) {
                        return false;
                return true;
            List<Field> fields = getAllFields(a.getClass());
            for( Field field : fields ) {
                Object aFieldObj = field.get(a);
                Object bFieldObj = field.get(b);
                boolean eqFlg = reflectEquals( aFieldObj, bFieldObj);
                if( !eqFlg ) {
                    return false;
            return true;
    }catch(IllegalAccessException | IllegalArgumentException | SecurityException | InvocationTargetException e ){
        throw new RuntimeException(e);

 *Superclass also goes back and gets all fields
 * @param clazz
 * @return
private static List<Field> getAllFields(Class<?> clazz){
	List<Field> allFields = new ArrayList<>();
	if( clazz != Object.class ) {
		Field[] fields = clazz.getDeclaredFields();
		allFields.addAll( Arrays.asList(fields) );
		allFields.addAll( getAllFields(clazz.getSuperclass()) );
	return allFields;

↓ Call like this.

reflectEquals(obj1, obj2)

After making a masterpiece, I realized that this is all I need to do ...

Gson gson = new GsonBuilder().setPrettyPrinting().create();
gson.toJson(obj1).equals( gson.toJson(obj2) );

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