@Override
  public void close() throws IOException {
    try {
      admin.close();
    } finally {
      try {
        connection.close();
      } finally {
        terminal.close();
      }
    }
  }
This dispatches key presses and timers to the current {@link ScreenView}.
hbase-hbtop/src/main/java/org/apache/hadoop/hbase/hbtop/screen/Screen.java