java.lang.ExceptionInInitializerError

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    • java.lang.ExceptionInInitializerError at Practice16.main(Practice16.java:13) Caused by: java.lang.RuntimeException: Uncompilable source code - Dog is not abstract and does not override abstract method compareTo(java.lang.Object) in java.lang.Comparable at Dog.<clinit>(Practice16.java:3)
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