I’m trying to follow this beginner tutorial about Google Charts: http://code.google.com/p/gwt-google-apis/wiki/VisualizationGettingStarted
I already have an issue at the beginning where they say:
Since we are working with an additional library, add the library
gwt-visualization.jar to the Java classpath. Then, add the module
com.google.gwt.visualization.Visualization to your module.
According to my research I have to copy gwt-visualization.jar to war/WEB-INF/lib
After I did that, I still have this error message:

I’ve also added the module into the XML file.
Could anybody give me a hint what I am missing?
Info:
Eclipse 4.2 Juno
Mac OS X Lion
Yellow wiggly lines aren’t errors but warnings, i.e. they don’t usually prevent your code from running but hint at things that might not be right.
In your case, the two
importstatements are referencing the deprecated classc.g.g.v.c.visualizations.PieChart. According to the javadoc of the deprecatedPieChartclass, you should be usingc.g.g.v.c.visualizations.corechart.PieChartinstead (note the extracorechartpackage).It might just work without changing the class name — deprecated classes aren’t somehow broken, they just will go away in future versions of a library and you’re encouraged to replace them with non-deprecated code. So given that this is mainly tutorial code for learnign GWT, just try if it works with the deprecated classes first.
Note: I abbreviated package names above, don’t use them verbatim but use
com.google.gwt.visualization.client.