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, 2 years ago
java.lang.StringBuffer cannot be cast to java.lang.Comparable
via Stack Overflow by Rais Alam
, 1 year ago
Exception in thread "main" java.lang.ClassCastException: Employee cannot be cast to java.lang.Comparable
java.lang.ClassCastException: Employee cannot be cast to java.lang.Comparable at java.util.TreeMap.put(Unknown Source) at java.util.TreeSet.add(Unknown Source) at Format.main(Format.java:31)