java.lang.ClassCastException

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    • java.lang.ClassCastException: java.lang.StringBuilder cannot be cast to java.lang.Comparable at java.util.Collections$ReverseComparator.compare(Collections.java:5108) at java.util.TimSort.countRunAndMakeAscending(TimSort.java:351) at java.util.TimSort.sort(TimSort.java:216) at java.util.Arrays.sort(Arrays.java:1512) at java.util.ArrayList.sort(ArrayList.java:1454) at java.util.Collections.sort(Collections.java:175) at WhatISThis.main(Main.java:10)

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