How do you implement error and exception handling in Java applications?

Error and exception handling in Java is implemented using the try-catch-finally construct. The try block contains code that may throw an exception. The catch block intercepts and handles specific types of exceptions. The finally block always executes, regardless of whether an exception was thrown or not, and is usually used for resource cleanup.

It is also important to use custom exceptions (subclasses of Exception or RuntimeException) for more precise error handling.

Example:

try {
    int result = 10 / divisor;
} catch (ArithmeticException e) {
    System.out.println("Division by zero is not possible");
} finally {
    System.out.println("Operation completed");
}

It is recommended not to suppress exceptions without handling and to log errors for diagnostics. In large applications, centralized exception handling is often used, for example, through middleware or global handlers.