How is hashCode() calculated in Java.

Posted by Jothi on Stack Overflow See other posts from Stack Overflow or by Jothi
Published on 2010-03-11T18:32:05Z Indexed on 2010/03/13 1:27 UTC
Read the original article Hit count: 358

Filed under:

hashcode

|

java

What value is hashCode() method is returning in java?. i read that it is an memory reference of an object. when i print hascode value for new Integer(1), its 1. for String(a) - 97. so i confused. is it ascii or what type of value is?

© Stack Overflow or respective owner

Related posts about hashcode

Complex HashMap has different hashCode after serialization

as seen on Stack Overflow - Search for 'Stack Overflow'
I am parsing a xml file into a complex HashMap looking like this: Map<String, Map<String, EcmObject> EcmObject: public class EcmObject implements Comparable, Serializable { private final EcmObjectType type; private final String name; private final List<EcmField> fields; … >>> More
Does Scala's BigDecimal violate the equals/hashCode contract?

as seen on Stack Overflow - Search for 'Stack Overflow'
As the Ordered trait demands, the equals method on Scala's BigDecimal class is consistent with the ordering. However, the hashcode is simply taken from the wrapped java.math.BigDecimal and is therefore inconsistent with equals. object DecTest { def main(args: Array[String]) { val d1 = BigDecimal("2") … >>> More
How is hashCode() calculated in Java.

as seen on Stack Overflow - Search for 'Stack Overflow'
What value is hashCode() method is returning in java?. i read that it is an memory reference of an object. when i print hascode value for new Integer(1), its 1. for String(a) - 97. so i confused. is it ascii or what type of value is? >>> More
Generic Dictionary and generating a hashcode for multi-part key

as seen on Stack Overflow - Search for 'Stack Overflow'
I have an object that has a multi-part key and I am struggling to find a suitable way override GetHashCode. An example of what the class looks like is. public class wibble{ public int keypart1 {get; set;} public int keypart2 {get; set;} public int keypart3 {get; set;} public int keypart4… >>> More
Why both hashCode() and equals() exist

as seen on Stack Overflow - Search for 'Stack Overflow'
why java Object class has two methods hashcode() and equals()? One of them looks redundant and its percolated to the bottom most derived class? >>> More

Related posts about java

Tomcat 6: Access Control Exception?

as seen on Server Fault - Search for 'Server Fault'
I'm trying to setup a tomcat6 server, and I'm trying to match another setup someone else established. However, my deployment (default Ubuntu install) uses a policy.d/ directory structure, and the established server just uses a catalina.policy file. I've tried setting every entry in policy.d to match… >>> More
Problem in creation MDB Queue connection at Jboss StartUp

as seen on Stack Overflow - Search for 'Stack Overflow'
I am not able to create a Queue connection in JBOSS4.2.3GA Version & Java1.5, as I am using MDB as per the below details. I am putting this MDB in a jar file(named utsJar.jar) and copied it in deploy folder of JBOSS, In the test env. this MDB works well but in another env. [ env settings and… >>> More
failing to establish connection between Postgres db and gwt

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am using Postgres and gwt 2.0 for one of my applications. I am facing problem connecting to the database. When I try to connect it gives "ClassNotFoundException". Here is what I get when I try to connect to database: java.lang.ClassNotFoundException: org.postgresql.Driver at java.net… >>> More
failing to establish connection between postgre db and gwt

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, For i am using postgre and gwt 2.0 for one of my applications. I am facing problem connecting to the database. When i try to connect it gives "ClassNotFoundException". Here is what i get when i try to connect to database: java.lang.ClassNotFoundException: org.postgresql.Driver at java.net… >>> More
Migration and deployement problems JBoss 4.2.2.GA to JBoss 6.0.0.M2

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm trying to migrate an application running on JBoss 4.2.2.GA to JBoss 6.0.0.M2 I give you some log to explain my problem : boot.log : 2010-03-16 09:59:29,406 ERROR [org.jboss.system.server.profileservice.ProfileServiceBootstrap] (Thread-2) Failed to load profile: Summary of incomplete deployments… >>> More