How can it be determined that a specific operation has completed successfully?

In Java, a successful operation is usually determined by the absence of exceptions during its execution. If a method completes without throwing exceptions, it is considered successful.

Additionally, some methods return special values or statuses that can be checked:

• A boolean value true or false indicating success or failure.
• A result object that can be checked for null or other indicators of successful execution.

Example:

boolean success = someOperation();
if (success) {
    System.out.println("Operation completed successfully");
} else {
    System.out.println("Operation failed with an error");
}

If an operation can throw an exception, its execution is usually wrapped in a try-catch block to handle errors and determine success:

try {
    performOperation();
    System.out.println("Operation successful");
} catch (Exception e) {
    System.out.println("Error during operation: " + e.getMessage());
}

Thus, the success of an operation in Java is determined either by the absence of exceptions or by checking the returned values.