topic Could Not Find the Main Class: in Java Maps SDK Questions https://community.esri.com/t5/java-maps-sdk-questions/could-not-find-the-main-class/m-p/722494#M2185 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>I am learning how to use Eclipse and ArcGIS Runtime SDK for Java. I am having a problem. I have set up according to <A href="https://developers.arcgis.com/java/guide/create-a-simple-map-application.htm" title="https://developers.arcgis.com/java/guide/create-a-simple-map-application.htm">Create a simple map application—ArcGIS Runtime SDK for Java | ArcGIS for Developers</A>. When I run the app, I get an error message 'Could not find the main class.JFJune. Program will exit. Any help will be appreciated.</P><P>Thanks</P></BODY></HTML> Thu, 18 Jun 2015 17:10:57 GMT JamesFitzgerald 2015-06-18T17:10:57Z Could Not Find the Main Class: https://community.esri.com/t5/java-maps-sdk-questions/could-not-find-the-main-class/m-p/722494#M2185 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>I am learning how to use Eclipse and ArcGIS Runtime SDK for Java. I am having a problem. I have set up according to <A href="https://developers.arcgis.com/java/guide/create-a-simple-map-application.htm" title="https://developers.arcgis.com/java/guide/create-a-simple-map-application.htm">Create a simple map application—ArcGIS Runtime SDK for Java | ArcGIS for Developers</A>. When I run the app, I get an error message 'Could not find the main class.JFJune. Program will exit. Any help will be appreciated.</P><P>Thanks</P></BODY></HTML> Thu, 18 Jun 2015 17:10:57 GMT https://community.esri.com/t5/java-maps-sdk-questions/could-not-find-the-main-class/m-p/722494#M2185 JamesFitzgerald 2015-06-18T17:10:57Z Re: Could Not Find the Main Class: https://community.esri.com/t5/java-maps-sdk-questions/could-not-find-the-main-class/m-p/722495#M2186 <HTML><HEAD></HEAD><BODY><P>I have a question similar to yours, in my case, I don't get a pop-up but a message in the console:</P><P></P><P>Error: Could not find or load main class NewClass</P><P><IMG __jive_id="188216" alt="error_notfound.JPG" class="image-1 jive-image" src="https://community.esri.com/legacyfs/online/188216_error_notfound.JPG" style="width: 620px; height: 317px;" /></P><P></P><P>On top of that, the option of adding toolkit.jar is greyed out. Any ideas why? Could it already be in there?</P><P><IMG alt="greyed_out.JPG" class="image-2 jive-image" src="https://community.esri.com/legacyfs/online/188217_greyed_out.JPG" style="height: auto;" /></P></BODY></HTML> Mon, 29 Feb 2016 21:08:19 GMT https://community.esri.com/t5/java-maps-sdk-questions/could-not-find-the-main-class/m-p/722495#M2186 deleted-user-3rTxRfVTcNm- 2016-02-29T21:08:19Z