I am using Antd + React.js combination. Can anybody help me with how to implement Internationalization like I want to add my own translation too? I understand how the default one is working. I would like to add the translation for my own custom component.
If you have your own custom component you probably won't be able to use internationalization that comes packed with antd components.
Your best bet would probably be a library like react-i18next or react-intl. Both are easy to implement and can provide you a way to put any kind of translated/formatted strings in your application, no matter what UI framework you actually use.