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    Thrown to indicate that a method has been passed an illegal or inappropriate argument. Check that you don't have more than one method existing with the same name.

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via Coderanch by raj baig, 1 year ago
object is not an instance of declaring class
via Oracle Community by 807546, 1 year ago
object is not an instance of declaring class
via Stack Overflow by Bebo
, 1 year ago
object is not an instance of declaring class
via Stack Overflow by Bebo
, 1 year ago
object is not an instance of declaring class
java.lang.IllegalArgumentException: object is not an instance of declaring class at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at TestReflect.showMethods(TestReflect.java:22) at TestReflect.main(TestReflect.java:7)