how can i use this tool in an android application to check the grammar .
The easiest way is to use the HTTP API. Whether it works directly on an Android device, I don't know.
You can use LanguageTool proofreader to check grammar on Android.LanguageTool proofreader run as service on Android and can check grammar in all Android application without it modification. LanguageTool proofreader replace integrated Android spell checker. But Internet connection required.