item-09.md

Item 09: Prefer try-with-resources to try-finally

static String firstLineOfFile(String path) throws IOException {
  try (BufferedReader br = new BufferedReader(new FileReader(path))) {
    return br.readLine()
  }
}

• If exceptions are thrown by both readLine and the invisible close method, the latter exception is suppressed in favor of the former.
• Multiple exceptions may be suppressed in order to preserve the exception that user actually wants to see.
• Suppressed exceptions are printed in the stack trace with a suppression notation.
• Suppressed exceptions can be accessed with the getSuppressed method.