Java Exception finally Block: This Code Always Executes Regardless of Exception

In Java, the `finally` block is a critical part of exception handling, characterized by the fact that **the code within the `finally` block will execute regardless of whether an exception occurs in the `try` block (including when the exception is not caught)**. Its basic syntax is `try-catch-finally`, where the `finally` block is optional, but it will execute if the `try` block is entered (even if only one line of code is executed within it). The `finally` block executes in various scenarios: when there is no exception in the `try` block; when an exception occurs in the `try` block and is caught by a `catch` clause; and when an exception occurs in the `try` block but is not caught, in which case the `finally` block executes before the exception continues to propagate. Its core purpose is **resource release**, such as closing files, database connections, etc., to prevent resource leaks. It should be noted that if both the `try` block and the `finally` block contain `return` statements, the `return` in the `finally` block will override the return value from the `try` block. In summary, `finally` ensures that critical cleanup operations (such as resource release) are always executed, enhancing code robustness and is an important mechanism in Java exception handling.