how to change the status bar color to white in android code example

Example: change status bar color android programmatically

public void statuscolor(){
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            Window window = getWindow();
            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            window.setStatusBarColor(Color.parseColor(getPreferences().getString(Constant.SECONDARY_COLOR, Constant.SECONDARY_COLOR)));
        }
    }