Why do we need to override the method public boolean equals(Object ob) in any class?
Is public boolean equals(Object ob) is same as public boolean equals(Circle ob)?
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31. Well, you don't *have* to. 2. No, it's an *overload*. – MC Emperor Feb 15 '20 at 10:23
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@Stefan: no, the default does not include "all attributes". The default implementation of equals and hashCode of `Object` perform an identity/reference comparison: two objects are only equal, if they point to the same location in memory. So `a = new Object(); b = new Object(); a != b;` (they are not equal), only `a = new Object(); b = a; a == b;` (same reference) – knittl Feb 15 '20 at 18:43
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Thank you knittl, I deleted the wrong comment – Stefan Feb 15 '20 at 18:45
