write a full java code, please

without copying anything from the internet

* Please put the code for each class alone

In this Phase, you need to consider the following: - You have a file called customers.txt as follow: \begin{tabular}{|l|} \hline Sami,6,Single \\ Ahmad,7,Deluxe \\ Ali,11,King \\ Rana,15,King \\ \hline \end{tabular} - Once the Hotel object is created, you should download the reserved rooms information from the file to the rooms array. - You need to update the file before closing the menu. For example, if the customer deleted any room or more new rooms have been reserved, you need to update all these new information to the file. - Use exception handling with try catch blocks wherever you think is important to prevent any wrong inputs from crashing the system