java.lang.ClassCastException

cwrk2.Book

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  • Stack trace

    • java.lang.ClassCastException: cwrk2.Book at cwrk2.Catalogue$Com_Util_ComParator.compare(Catalogue.java:73) at java.util.Arrays.mergeSort(Arrays.java:1181) at java.util.Arrays.sort(Arrays.java:1128) at java.util.Collections.sort(Collections.java:121)

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