Android - Time based Activity Change

thread.java

public void onCreate(Bundle savedInstanceState)  {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Thread thread = new Thread() {
        	public void run() {
		        try {
		        	Thread.sleep(3*1000);
		        } catch (Exception e) {}
		        finish();
		        Intent intent = new Intent(MainActivity.this, MenuActivity.class);
		        MainActivity.this.startActivity(intent);
        	}
        };
        thread.start();
 }