unable to update timstamp evertime I update query in android sqlite

I am trying to update timestamp everytime I update the row in sqlite.I tried the code below and crashes at :

   android.database.sqlite.SQLiteException: near "05": syntax error (code 1): , while compiling: UPDATE databasetable3 SET Stats = 1 ,timestamp = 2015/01/07 05:27:56  WHERE No = 2

:

String CREATE_TABLE3 = "CREATE TABLE IF NOT EXISTS " + databasetable3 + "("+ KEY_sno + " INTEGER PRIMARY KEY,  " + KEY_Stats+ " VARCHAR,  " + KEY_No+ " VARCHAR , " + "timestamp"+ " TIMESTAMP DEFAULT CURRENT_TIMESTAMP)";
    db.execSQL(CREATE_TABLE3);



DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
        Date date = new Date();
ourdatabase.execSQL("UPDATE databasetable3 SET Stats = "+Stats+" ,timestamp = "+dateFormat.format(date)+"  WHERE No = "+no);