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java Programming Glossary: hashcodePlaces where JavaBeans are used? http://stackoverflow.com/questions/1727603/places-where-javabeans-are-used id null id.equals User other .id other this public int hashCode return id null getClass .hashCode id.hashCode super.hashCode.. other this public int hashCode return id null getClass .hashCode id.hashCode super.hashCode public String toString return String.format.. public int hashCode return id null getClass .hashCode id.hashCode super.hashCode public String toString return String.format User..
Why do I need to override the equals and hashCode methods in Java? http://stackoverflow.com/questions/2265503/why-do-i-need-to-override-the-equals-and-hashcode-methods-in-java do I need to override the equals and hashCode methods in Java Recently I read through this Developer Works.. Works Document . The document is all about defining hashCode and equals effectively and correctly but I am not able to figure.. of MyClass are equal if their importantField is equal with hashCode and equals generated by eclipse public class MyClass private..
Overriding equals and hashCode in Java http://stackoverflow.com/questions/27581/overriding-equals-and-hashcode-in-java equals and hashCode in Java What issues pitfalls must be considered when overriding.. pitfalls must be considered when overriding equals and hashCode java override equals hashcode share improve this question.. . Furthermore o.equals null must always return false. hashCode javadoc must also be consistent if the object is not modified..
Why does Java's hashCode() in String use 31 as a multiplier? http://stackoverflow.com/questions/299304/why-does-javas-hashcode-in-string-use-31-as-a-multiplier does Java's hashCode in String use 31 as a multiplier In Java the hash code for..
How to use the toString method in Java? http://stackoverflow.com/questions/3615721/how-to-use-the-tostring-method-in-java to the value of getClass .getName '@' Integer.toHexString hashCode Example String mystr a b c System.out.println mystr.toString..
How does a HashMap work in Java? http://stackoverflow.com/questions/6493605/how-does-a-hashmap-work-in-java you can also see what requirements are necessary on the hashCode and equals methods of keys If two keys are the same equals returns.. the same equals returns true when you compare them their hashCode method must return the same number. If keys violate this then..
http://stackoverflow.com/questions/7520432/java-vs-equals-confusion are one and the same. Always remember to override hashCode if you override equals so as not to break the contract . share..
equals and hashcode in Hibernate http://stackoverflow.com/questions/1638723/equals-and-hashcode-in-hibernate and hashcode in Hibernate How should model class's equals and hashcode be.. hashcode in Hibernate How should model class's equals and hashcode be implemented in Hibernate What are the common pitfalls Is..
Why do I need to override the equals and hashCode methods in Java? http://stackoverflow.com/questions/2265503/why-do-i-need-to-override-the-equals-and-hashcode-methods-in-java to implement these method efficiently java equals hashcode share improve this question It is not always necessary to.. this question It is not always necessary to override hashcode and equals. But if you think you need to override one then you..
Why doesn't String's hashCode() cache 0? http://stackoverflow.com/questions/2310498/why-doesnt-strings-hashcode-cache-0 never preened vocalizing transsexuals. java string hashcode share improve this question You're worrying about nothing...
Overriding equals and hashCode in Java http://stackoverflow.com/questions/27581/overriding-equals-and-hashcode-in-java when overriding equals and hashCode java override equals hashcode share improve this question The theory for the language lawyers..
Why does Java's hashCode() in String use 31 as a multiplier? http://stackoverflow.com/questions/299304/why-does-javas-hashcode-in-string-use-31-as-a-multiplier automatically. from Chapter 3 Item 9 Always override hashcode when you override equals page 48 share improve this answer..
Why use a prime number in hashCode? http://stackoverflow.com/questions/3613102/why-use-a-prime-number-in-hashcode Eric Lippert's Guidelines and rules for GetHashCode java hashcode primes share improve this question Because you want the..
How to ensure hashCode() is consistent with equals()? http://stackoverflow.com/questions/410236/how-to-ensure-hashcode-is-consistent-with-equals melissa.hashCode output java object equals hashcode share improve this question It doesn't say the hashcode.. share improve this question It doesn't say the hashcode for an object has to be completely unique only that the hashcode.. for an object has to be completely unique only that the hashcode for two equal objects returns the same hashcode. It's entirely..
http://stackoverflow.com/questions/415953/generate-md5-hash-in-java to generate MD5 hash of a string in Java java hash md5 hashcode share improve this question MessageDigest is your friend...
http://stackoverflow.com/questions/5003142/jsp-using-mvc-and-jdbc price Add generate getters setters c'tors equals hashcode boilerplate. A DAO class which does all the nasty JDBC work..
The JPA hashCode() / equals() dilemma http://stackoverflow.com/questions/5031614/the-jpa-hashcode-equals-dilemma share improve this question I always override equals hashcode and implement it based on the business id. Seems the most reasonable..
How does a HashMap work in Java? http://stackoverflow.com/questions/6493605/how-does-a-hashmap-work-in-java I think Its perfectly legal for two objects to have same hashcode. If two objects are equal using equals then they have same hashcode... If two objects are equal using equals then they have same hashcode. If two object are not equal then they cannot have same hashcode.. If two object are not equal then they cannot have same hashcode Am I correct Now if am correct I have following doubt HashMap..
Consistency of hashCode() on a Java string http://stackoverflow.com/questions/785091/consistency-of-hashcode-on-a-java-string irrelevant in the context of this question. java string hashcode share improve this question I can see that documentation..
Why can't I retrieve an item from a HashSet without enumeration? http://stackoverflow.com/questions/1494812/why-cant-i-retrieve-an-item-from-a-hashset-without-enumeration sealed class X object A object B object extra public int HashCode return A.hashCode B.hashCode public bool Equals X obj return..
Object equality in context of hibernate / webapp http://stackoverflow.com/questions/2719877/object-equality-in-context-of-hibernate-webapp
http://stackoverflow.com/questions/2912340/c-sharp-hashcode-builder HashCode Builder I used to use the apache hashcode builder a lot Does.. obj.Length i object val obj i res val null i ulong val.GetHashCode 1 2 i return int uint res ^ res 32 Using such a helper is quick..
Right way to implement equals contract http://stackoverflow.com/questions/3181339/right-way-to-implement-equals-contract Source Alt Shift S menu option. See also JBoss Equals and HashCode in view of persistence Hibernate Persistent Classes implementing..
http://stackoverflow.com/questions/4070716/instantiating-inner-class but getting an error No enclosing instance of type CustomHashCodeExample is accessible. Must qualify the allocation with an enclosing.. the allocation with an enclosing instance of type CustomHashCodeExample e.g. x.new A where x is an instance of CustomHashCodeExample.. e.g. x.new A where x is an instance of CustomHashCodeExample . I wrote an inner class HashPerson and I am getting..
Java Array HashCode implementation http://stackoverflow.com/questions/744735/java-array-hashcode-implementation Array HashCode implementation This is odd. A co worker asked about the implementation..
Using auto generated id of hibenate entity object in the equals and hashcode methods http://stackoverflow.com/questions/7579404/using-auto-generated-id-of-hibenate-entity-object-in-the-equals-and-hashcode-met share improve this question You should read Equals and HashCode on the Hibernate Community Wiki. The main reason for not using..
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