Change English number to Nepali number(Unicode) using android/java

EnglishNumberToNepaliNumber.java

public class EnglishNumberToNepaliNumber extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        int x  = 4545645;
        String xInNepali = Util.convertEnglishNumberToNepali(x);
        Log.d("xInNepali",x+" : "+xInNepali);

    }
}

Util.java

public class Util {


    public static String convertEnglishNumberToNepali(int num) {
        char[] number = String.valueOf(num).toCharArray();
        for (int i = 0; i < number.length; i++) {
            number[i] = englishToNepaliNumberInternal(number[i]);
        }
        return String.valueOf(number);
    }

    private static char englishToNepaliNumberInternal(char number) {

        switch (number) {
            case '0':
                number = '०';
                break;
            case '1':
                number = '१';
                break;
            case '2':
                number = '२';
                break;
            case '3':
                number = '३';
                break;
            case '4':
                number = '४';
                break;
            case '5':
                number = '५';
                break;
            case '6':
                number = '६';
                break;
            case '7':
                number = '७';
                break;
            case '8':
                number = '८';
                break;
            case '9':
                number = '९';
                break;
        }
        return number;

    }

}