How to store a single row data into a string array of sqlite database in android

I have called a function returnCurrentNameById() by passing the id of the particular row. But it gives an error.

String[] s1;

public String[] returnCurrentNameById(int k) throws SQLException{  

    String[] columns = new String[]{ KEY_ID1, KEY_NAME, Key_DOB, KEY_AGE, KEY_PHONE_NO, Key_EXPERIENCE, KEY_EMAIL, KEY_STATUS, KEY_STATUS};
    SQLiteDatabase db3 = this.getReadableDatabase();
    Cursor c = db3.query(DATA_BASE_TABLE_NAME1, columns, KEY_ID1 + "=" + k, null, null, null, null);

    if (c != null){
        c.moveToFirst();
        for(int i = 0; i<=8; i++){
            s1[i] = c.getString(i);
        }
        return s1;
    }
    return null;
}