catch finally
时间: 2023-09-20 12:07:33 浏览: 48
The `finally` block in a `try-catch-finally` statement is used to execute code that should always run regardless of whether an exception was thrown or not. The `finally` block is executed after the `try` block and after any associated `catch` blocks, if an exception was thrown.
Here is an example of a `try-catch-finally` statement:
```
try {
// some code that may throw an exception
} catch (Exception e) {
// handle the exception
} finally {
// code that should always run, regardless of whether an exception was thrown
}
```
In this example, if an exception is thrown in the `try` block, the code in the `catch` block will be executed to handle the exception. After the `catch` block (or if no exception was thrown), the code in the `finally` block will be executed.
The `finally` block is often used to release resources such as file handles or network connections that were opened in the `try` block. It is also useful for cleaning up state or performing other necessary operations that should always happen, regardless of any exceptions that may have occurred.
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