JavascriptInterface annotation for JELLY_BEAN and below

As clearly noted on [official docs][1], usage of @JavascriptInterface is needed for API level JELLY_BEAN_MR1 and above, to access a java function from the webview side. This means that Project Build Target must point to API 17 or above which resolves the following import: import android.webkit.JavascriptInterface; How does android handles this code for API 16 and below? Will I get a runtime exception or does it ignore this import on runtime? [1]: https://developer.android.com/reference/android/webkit/WebView.html#addJavascriptInterface%28java.lang.Object,%20java.lang.String%29

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