Bad Code!Why?

public class MainActivity extends Activity {

 

        @Override

        protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.main);

            new MyThread().start();

        }

 

        class MyThread extends Thread {

 

            @Override

            public void run() {

                while (true) {

                    try {

                        Thread.sleep(5000);

                    } catch (InterruptedException e) {

                        e.printStackTrace();

                    }

                }

            }

        }

 

    }