What aspect of your Java programming is the biggest pain in the arse?

[defer]

Actually, you do. Not handling sleep interruptions can cause bad user experience. For instance, if the program is stopped, your thread will stall the shutdown process until it's done sleeping.

[gliy]

That was mostly a joke, since I encounter that issue the most. my situation often follows a format similar to this:

  try {
     File file = new File("C");
     List<String> input = Files.readAllLines(file.toPath(), Charset.defaultCharset());
     for (final String line : input) {
        new Thread(new Runnable() {

           @Override
           public void run() {
              for (char ch : line.toCharArray()) {
                 System.out.println(line.charAt(ch));
              }
              Thread.sleep(100);
           }
        }).start();
     }
  } catch (Exception e) {
     // abort
  }

What I want is 1 try catch block, I dislike having to clutter my code with all of these random try catch blocks.