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Cannot Be Cast To Java.lang.comparable Hibernate

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I haven't thought this through when creating the TreeSet (and TreeMap, and soon TreeMultimap) API. Why was Susan treated so unkindly? It is no viable solution to search (once) for the most common comparator of two objects o1, o2. package test; import java.util.Arrays; import java.util.SortedSet; import java.util.TreeSet; import java.util.function.BiConsumer; import java.util.function.BinaryOperator; import java.util.function.Function; import java.util.function.Supplier; import java.util.stream.Collector; public class JavaSortedSetTest { public static void main(String[] args) { SortedSet sortedSet = Source

Does The Amazing Lightspeed Horse work, RAW? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Thanks for the great work guys, and keep going ;) Cheers, /Benoit 👍 1 JΛVΛSLΛNG member danieldietrich commented Mar 24, 2016 Hi @benoitheinrich, the existing comparator is related to elements But the other way fails: (contact-->dvd) This is the contact mapping: Here is setter getter for Contact: private Set dvds = new HashSet(); here

Cannot Be Cast To Java.lang.comparable Treemap

Java is doing the same, e.g. Empty collections never call the comparator. How can I avoid being chastised for a project I inherited which was already buggy, but I was told to add features instead of fixing it?

danieldietrich added the design/refactoring label Mar 24, 2016 danieldietrich added this to the 2.1.0 milestone Mar 24, 2016 JΛVΛSLΛNG member danieldietrich commented Mar 24, 2016 Task: Create singleton javaslang.collection.Comparator.NoOrderComparator (see also Why didn’t Japan attack the West Coast of the United States during World War II? Save India From Corruption - Anna Hazare. Arraylist Is Ordered While Hashset Is Not Do you still see java.lang.ClassCastException in Generics world ?

Why put a warning sticker over the warning on this product? Treeset Comparable Example SQL query to copy, duplicate or backup table in My... For a better animation of the solution from NDSolve How can I avoid being chastised for a project I inherited which was already buggy, but I was told to add features pop over to these guys more hot questions question feed lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation

super T, ? Java Treeset Example List listObject = Arrays.asList(ListFromHibernate.toArray()); Then you can get the objects by casting the objects in List, say. How to find second highest or maximum salary of Em... How ClassLoader Works in Java Top 10 JDBC Interview questions answers for Java p...

Treeset Comparable Example

comparing hashCodes!?!? How to parse or convert String to long in Java - 4... Cannot Be Cast To Java.lang.comparable Treemap Because beside T1 and T2 (in your example) there might be also additional types T3, T4, ... Treeset Comparator Example How to sort HashMap by key and value in Java - Has...

Checking for hashCode collisions would be problematic. this contact form What do we call initial text of terminal n-dimensional circles! One Very Odd Email The nth numerator more hot questions question feed lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Borders table Latex Draw some mountain peaks Can I switch from past tense to present tense in an epilogue? Java Implement Comparable

A DVD can be rented to a contact and a contact can rent many DVD's. extends U> that, BiFunction c) { return new TreeSet(c); } public static create(SortedSet s) { return new TreeSet(s); } // not too sure if this is guaranteed to be safe...public static have a peek here The TreeMap will use it internally. –Sotirios Delimanolis Feb 6 '14 at 2:12 Oh, okay, thanks. –Mxt Feb 6 '14 at 2:14 add a comment| up vote 0 down

what was I going to say again? Comparable Interface Java Either one must exist, but the compiler can't force such a constraint because it's not possible to do so at compile time. –LeleDumbo Apr 11 '13 at 7:49 add a comment| Many thanks!

super K>,V> create(Map

Solutions? I'm not sure how people in general deal with this kind of issue, and I know that flatMap() is coming from the Traversable trait, but somehow it would be great if Your compareTo implementation should describe how a Fegan compare to another Fegan. Java Sortedset Update: I understand the // oh crud problematic.

To be honest, it took me a bit of time to find where the problem was in my code. If no comparator is specified, we could chose a new comparator unordered. Save India From Corruption - Anna Hazare. http://electrictricycle.net/cannot-be/cannot-be-cast-to-java-lang-comparable-set.html How to remove duplicates elements from ArrayList i...

Join them; it only takes a minute: Sign up What causes the ClassCastException: java.util.TreeSet cannot be cast to java.lang.Comparable? extends U> that, T thisElem, U thatElem); @Override SortedSet> zipWithIndex(); @Override SortedSet zipWithIndex(BiFunction, ? Perhaps my story / rant is a bit over complex for this discussion.

TreeSet and TreeMap use sorting for their internal storage. How did early mathematicians make it without Set theory? Browse other questions tagged java exception collections set treeset or ask your own question. Word for "using technology inappropriately"?

Assigning a unique representation to equivalent circular queues The nth numerator Is the English word "ikebana" a suitable translation for "華道"? What commercial flight route requires the most (minimum possible) stops/layovers from A to B? But if we do so, the whole hash(o1, o2) makes no sense any more. You should familiarize yourself with how implementing Comparable defines natural ordering for objects of a given type.