抽象化

gistfile1.java

public abstract class AbstractShachiku implements Runnable
{
  protected asbtract void work();

  @Override
  public final void run()
  {
    syukkin();
  }

  private final void syukkin()
  {
    try
    {
      work();
    }
    catch(RuntimeException ignore)
    {
      run();
    }

    kitaku();
  }

  private final void kitaku()
  {
    Thread.sleep(4 * 60 * 60 * 1000);
    syukkin();
  }
}