import android.*; // bla bla
public class myClass extends Service implements OnTouchListener, OnClickListener {

    /* variable bla bla */
    private EditText editText;
    private WindowManager window;

    @Override
    public void onCreate() {
    super.onCreate();
    window = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
    editText = new EditText(this);
    editText.setText("AAA\nBBB\nCCC");
    editText.setWidth(500);
    editText.setHeight(300);
    editText.setSingleLine(false);
    editText.setOnTouchListener(this);
    editText.setOnClickListener(this)
    editText.setBackgroundColor(0xff000000);
    window.addView(editText, params);

    ///////////////////
        /* WindowManager */
    ///////////////////
    }

    @Override
    /////////////////
    /* onDestroy */
    /* onClick */
    /* onTouch*/
    /* onBind*/
    //////////
}