Как исправить подчёркивание знаков в Android Studio?

Почему появляются такие подчёркивания и как их исправить в данном коде??? Вот код `

//Webview custom test
private void doWebViewPrint(String ss) {
    print_view.setWebViewClient(new WebViewClient() {

        private View mCustomView;
        private WebChromeClient.CustomViewCallback mCustomViewCallback;
        protected FrameLayout mFullscreenContainer;
        private int mOriginalOrientation;
        private int mOriginalSystemUiVisibility;

        void doWebViewPrint() {
        }

        public Bitmap getDefaultVideoPoster() {
            if (mCustomView == null) {
                return null;
            }
            return BitmapFactory.decodeResource(getApplicationContext().getResources(), 2130837573);
        }

        public void onHideCustomView() {
            ((FrameLayout) getWindow().getDecorView()).removeView(this.mCustomView);
            this.mCustomView = null;
            getWindow().getDecorView().setSystemUiVisibility(this.mOriginalSystemUiVisibility);
            setRequestedOrientation(this.mOriginalOrientation);
            this.mCustomViewCallback.onCustomViewHidden();
            this.mCustomViewCallback = null;
        }

        public void onShowCustomView(View paramView, WebChromeClient.CustomViewCallback paramCustomViewCallback) {
            if (this.mCustomView != null) {
                onHideCustomView();
                return;
            }
            this.mCustomView = paramView;
            this.mOriginalSystemUiVisibility = getWindow().getDecorView().getSystemUiVisibility();
            this.mOriginalOrientation = getRequestedOrientation();
            this.mCustomViewCallback = paramCustomViewCallback;
            ((FrameLayout) getWindow().getDecorView()).addView(this.mCustomView, new FrameLayout.LayoutParams(-1, -1));
            getWindow().getDecorView().setSystemUiVisibility(3846 | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
        }
    }

    protected void onSaveInstanceState( Bundle Bundle outState;
    ) {
        super.onSaveInstanceState(outState);
        print_view.saveState(outState);
    }

    protected void onRestoreInstanceState(Bundle Bundle savedInstanceState;)
     {
        super.onRestoreInstanceState(savedInstanceState);
        print_view.restoreState(savedInstanceState);
    }

}

        //Webview custom test