Judging by the wording of your question (you used the word “hide”), you already know what is going on here. The phenomenon is called “name hiding”. For some reason, every time someone asks a question about why name hiding happens, people who respond either say that this called “name hiding” and explain how it works … Read more
There are several things you need to take into account of which one or more might be relevant you your specific case Load your CSS after PrimeFaces one You need to ensure that your CSS is loaded after the PrimeFaces one. You can achieve this by placing the <h:outputStylesheet> referencing your CSS file inside <h:body> … Read more
On invoking overridable method from constructors Simply put, this is wrong because it unnecessarily opens up possibilities to MANY bugs. When the @Override is invoked, the state of the object may be inconsistent and/or incomplete. A quote from Effective Java 2nd Edition, Item 17: Design and document for inheritance, or else prohibit it: There are … Read more
Yes, it is important if your item will be used as a key in a dictionary, or HashSet<T>, etc – since this is used (in the absence of a custom IEqualityComparer<T>) to group items into buckets. If the hash-code for two items does not match, they may never be considered equal (Equals will simply never … Read more
The theory (for the language lawyers and the mathematically inclined): equals() (javadoc) must define an equivalence relation (it must be reflexive, symmetric, and transitive). In addition, it must be consistent (if the objects are not modified, then it must keep returning the same value). Furthermore, o.equals(null) must always return false. hashCode() (javadoc) must also be … Read more
Most types in .NET derive from the type System.Object, simply called object in C#. (E.g. interfaces don’t, however their implementations do.) System.Object declares the methods Equals and GetHashCode as well as other members. (Note: The case matters in C#). The types you create automatically inherit these methods. The task of Equals is to compare an … Read more
Owing to a lack of further information, this is purely a guess with regards to your problem. However, the functionality of Implement (Crtl + I) and Override (Ctrl + O) depend on if your class is implementing an interface or extending another class. Implement (Ctrl + I) This will only work if your class is … Read more