?? ??? ??? Java? Try-With-Resources ?? ??? ??????

Java? Try-With-Resources ?? ?? ? ????? ?? ??? ?? ?????? ??? ?? ??? ??? ?????? ???????. ? ??? ARM (Automatic Resource Block Management) ??? ??? Java 7?? ???????.

Try-With-Resources ?? ????? try Clause ??? AutoCloseable ?? ?? ?? Closeable ???? ??? ??? ???????. ?? ??? ????? ????? ??? ????? ??? ???? ??? ???? ??? ??? ???? ????.

?? ??? ?? ??? ????.

 <code class="java">try (FileInputStream fis = new FileInputStream("input.txt"); FileOutputStream fos = new FileOutputStream("output.txt")) { // Use the resources byte[] buffer = new byte[1024]; int bytesRead; while ((bytesRead = fis.read(buffer)) != -1) { fos.write(buffer, 0, bytesRead); } } // fis and fos are automatically closed here</code>

? ???? FileInputStream ? FileOutputStream ?? ??? ? ???? Closeable ? ? ???? ? ?? ?? ??? ??? ? ????. ??? ???? ???? ???? ???? finally ??? ???? ?? ??? ????.

Java? ? ??? ???? ?? ??? ???? ?? ? ? ???????

Try-With-resources ?? AutoCloseable ?????? ???? ?? ???? ?? ? ? ??????. AutoCloseable ? ??? ?? ?????? ?? ??? close() ???? ??? ? ?? ???? ?? ? ???? ?????. Closeable ?????? AutoCloseable ???? I/O ??? ??? ???? ??? ?????.

?? ? ??? ???? ??? ???? ??? ????.

• ?? ??? : FileInputStream ? FileOutputStream ? ?? ??? ?? ?? ? ?????.
• ?????? ?? : ?????? ??? ???? Connection , Statement ? ResultSet ??? ??
• ???? ?? : ???? ??? ???? Socket ? ServerSocket ? ??.
• ??? ?? ??? : AutoCloseable ???? ????? ???? ???? ?? ??? ?? ???.

AutoCloseable ?????? ???? ?? ?? ?? ??? ??? ??? ?? ???? ??? ??? ??? ??? ?? ? ? ????.

Try-With-resources ?? ?? ???? ?? ??? ??? ?? ?????

Try-With-resources ?? ?? ?? ???? ?? ??? ? ?? ??? ??????.

1. ??? ???? ?? ?? : finally ??? ??? ???? ?? ??? ????. ?? ?? ??? ?? ?? ?? ???.
2. ?? ?? ?? : ??? ?? ??-?? ??? ???? finally ??? ?? ??? ??? try ??? ??? ??? ?????? ?? ? ? ????. ? ??? ???? ??? ????? ?? ???? ???????.
3. ? ??? ?? ?? : Try ??? ?? ???? ?????? ???? ??? ???? ??? ?? ?????.
4. ??? ?? ?? : ???? ??? ??? ??? ?? ?? ?? ??? ?? ??? ???? ??? ???? ??? ??? ??? ? ????.

??? ???? ??? ?? ???? ??? ???? ????.

????:

 <code class="java">FileInputStream fis = null; try { fis = new FileInputStream("input.txt"); // Use fis } catch (IOException e) { // Handle exception } finally { if (fis != null) { try { fis.close(); } catch (IOException e) { // Handle exception from closing } } }</code>

??? ???????.

 <code class="java">try (FileInputStream fis = new FileInputStream("input.txt")) { // Use fis } // fis is automatically closed</code>

??? ?? ? ???? ??? ?? ? ???? ????.

Java?? Try-Withources? ??? ? ??? ?????? ?? ??? ??????

Java?? Try-With-Resources? ???? ?? ??? ???? ???? ???? ?? ?? ??? ?? ?? ??? ??????.

1. ?? ??? ?? : ?? ?? ??? ?? ?? ?? ?? ?? ??? ??? ??? ??? ?? ? ? ????.

 <code class="java">try (FileInputStream fis = new FileInputStream("input.txt")) { // Use fis } catch (IOException e) { // Handle IOException } catch (Exception e) { // Handle other exceptions }</code>

2. ?? ?? : ?? ??? ??? ???? ??? ?? ?? ?? ? ?? ??? ???? ??? ??? ??? ?????. getSuppressed() ???? ???? ??? ?? ??? ??? ? ? ????.

 <code class="java">try (FileInputStream fis = new FileInputStream("input.txt")) { // Use fis } catch (IOException e) { for (Throwable se : e.getSuppressed()) { // Handle suppressed exceptions } }</code>

3. ?? ??? : ?? ??? ????????? ?? ?? ???? ?? ?? ??? ?? ??? ?? ???? ??? ?? ? ??? ??? ?? ??? ? ? ????.

 <code class="java">try (FileInputStream fis = new FileInputStream("input.txt")) { // Use fis } catch (IOException e) { for (Throwable se : e.getSuppressed()) { // Handle suppressed exceptions } throw new CustomException("Failed to process file", e); }</code>

4. ?? : ?? ??, ?? ??? ??? ??? ??? ???? ??? ??????? ?? ??? ??? ??????.

 <code class="java">try (FileInputStream fis = new FileInputStream("input.txt")) { // Use fis } catch (IOException e) { logger.error("An error occurred while processing the file", e); for (Throwable se : e.getSuppressed()) { logger.error("Suppressed exception occurred", se); } }</code>

??? ??? ??? Try-With-resources? ???? ??? ???? ???? ???? ??? ???? ???? ?? ???? ??????.

? ??? ?? ??? ??? Java? Try-With-Resources ?? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!