Exception Handling Handling multiple exceptions

In Java, it is possible to handle multiple exceptions using a single try-catch block. This allows you to handle different types of exceptions in a uniform way. Here are some basics of handling multiple exceptions in Java:

1. Multi-catch block: A multi-catch block is used to catch multiple exceptions in a single catch block. To use a multi-catch block, you can separate the exception types using the `|` symbol. For example:

try {
    // code that may throw exceptions
} catch (IOException | SQLException e) {
    // handle IOException or SQLException
}

Here, the catch block catches either an `IOException` or an `SQLException`.

2. Catching superclass exceptions: You can also catch a superclass exception to handle multiple related exceptions. For example:

try {
    // code that may throw exceptions
} catch (IOException e) {
    // handle IOException
} catch (Exception e) {
    // handle all other exceptions
}

Here, the first catch block handles `IOException`, while the second catch block handles all other exceptions that are subclasses of `Exception`.

3. Order of catch blocks: When handling multiple exceptions, the order of the catch blocks is important. You should handle more specific exceptions before handling more general exceptions. This is because if a more general exception is caught first, the more specific exceptions will never be caught. For example:

try {
    // code that may throw exceptions
} catch (Exception e) {
    // handle all exceptions
} catch (IOException e) {
    // this code will never be executed
}

Here, the first catch block catches all exceptions, including `IOException`. The second catch block will never be executed, even if an `IOException` is thrown.

Handling multiple exceptions in Java is an important part of writing robust and reliable code. By using multi-catch blocks and catching superclass exceptions, you can handle different types of exceptions in a uniform way and write more maintainable code.