File Handling and Advanced Exceptions
In this topic, you'll learn file handling and advanced exception handling in Java. You'll explore how to perform file input/output (I/O) operations, as well as how to catch and handle custom exceptions to improve the robustness and reliability of your Java applications. This topic is essential for developing Java applications that interact with files and handle errors efficiently.
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In this exercise, you will create a Java program that demonstrates how to work with files using the File, FileReader, and FileWriter classes. First, you will create a text file and enter data into it using FileWriter. Then, you will open the file to read its contents using FileReader. This exercise will help you understand how to perform input/output (I/O) operations on text files in Java.
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In this exercise, you will create a Java program that demonstrates the use of **Streams and Serialization** to save and retrieve objects from a file. You will implement a serializable Person class, allowing you to store its data in a file using **ObjectOutputStream** and retrieve it using **ObjectInputStream**. This technique is fundamental to data persistence in Java applications.
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In this exercise, you will create a Java program that implements **Custom Exceptions**. To do this, you will define an **exception class** called InsufficientBalanceException, which will be triggered when a user attempts to withdraw more money than they have available in their bank account. Then, you will implement a BankAccount class with a withdraw() method that will throw this exception when necessary.