The Java Visualizer is unable to show the content of the following collection types. - java.util.TreeSet instance - java.util.HashSet instance As you can see in the attached image values contained in the instance of _java.util.HashSet_ class is not shown. 
The Java Visualizer is unable to show the content of the following collection types.
As you can see in the attached image values contained in the instance of java.util.HashSet class is not shown.