Re: Exception: java.lang.NoClassDefFoundError: com/google/gwt/dev/DevMode

Your problem is different. Line 177 in DevMode.java in GWT 2.7 indicates that you're passing a -server argument to DevMode whose value references a class absent from the classpath (one possibility is using AppEngine but not having the appengine JAR in the classpath). There should be a message on the standard error just above the stacktrace.

On Friday, June 24, 2016 at 10:48:12 AM UTC+2, Sachin Chaudhari wrote:

Hi Sara, what you did with plugin. I mean My one application runs perfectly with that plugin.  But second application giving "java.lang.ClassNotFoundException:at com.google.gwt.dev.DevMode$ArgHandlerServer.setString(DevMode.java:177)

at com.google.gwt.util.tools.ArgHandlerString.handle(ArgHandlerString.java:26)

at com.google.gwt.util.tools.ToolBase.processArgs(ToolBase.java:250)

at com.google.gwt.dev.ArgProcessorBase.processArgs(ArgProcessorBase.java:30)

at com.google.gwt.dev.DevMode.main(DevMode.java:412)

Google Web Toolkit 2.7.0

"

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