Results 1 - 15 of about 47 sawaal for "hashtable"
Dictionaryimplements Map, Cloneable, SerializableThis class implements a hashtable, which maps keys to values. Any non-null object can be used as a key or as a value.To successfully store and retrieve objects from a hashtable, the objects used as keys must implement the hashCode method and the equals method.The Hashtable is one of the original collection classes in Java. HashMap is part of the new Collections Framework
Posted in
Computers & Technology by jks marven at 1:01 PM on May 28, 2008
, The HashMap class is roughly equivalent to Hashtable, except that it is unsynchronized and permits nulls. HashMap allows null values as key and value whereas Hashtable doesnt allow. HashMap does not guarantee that the order of the map will remain constant over time. HashMap is unsynchronized and Hashtable is synchronized....hello singh Both provide key-value access to data. The Hashtable is one
Posted in
Computers & Technology by rocky singh at 5:22 AM on June 22, 2008
Hashtables are an extremely useful mechanism for storing data. Hashtables work by mapping a key to a value, which is stored in an in-memory data structure. Rather than searching through all elements of the hashtable for a matching key, a hashing function analyses a key, and returns an index number. This index matches a stored value, and the data is then accessed. This is an extremely efficient data structure
Posted in
Computers & Technology by rashmigoyel at 10:00 PM on November 12, 2008
Hashtables are an extremely useful mechanism for storing data. Hashtables work by mapping a key to a value, which is stored in an in-memory data structure. Rather than searching through all elements of the hashtable for a matching key, a hashing function analyses a key, and returns an index number. This index matches a stored value, and the data is then accessed. This is an extremely efficient data structure
Posted in
Computers & Technology by yamaha at 6:56 AM on January 30, 2008
The HashMap class is roughly equivalent to Hashtable, except that it is unsynchronized and permits nulls. HashMap allows null values as key and value whereas Hashtable doesnt allow. HashMap does not guarantee that the order of the map will remain constant over time. HashMap is unsynchronized and Hashtable is synchronized....WEll Rachna! Map is Interface and Hashmap is class that implements that....The Hash
Posted in
Computers & Technology by rachna nigam at 5:21 AM on October 25, 2008
Start method in the Global.asax file.Sub ApplicationStartDim props = New Hashtable As IDictionaryprops"name" = "MyChannel"props"priority" = "100" Nothing entries specify RemotingConfiguration.Configur e in the ApplicationStart method in the Global.asax file.Sub ApplicationStartDim props = New Hashtable As IDictionaryprops"name" = "
Posted in
Computers & Technology by Harshil at 7:05 PM on June 20, 2008
Tags
Map is Interface and Hashmap is class that implements that and its not serialized HashMap is non serialized and Hashtable is serialized.An object that maps keys to values. A map cannot contain specific guarantees as to their order; others, like the HashMap class, do not....Map is Interface and Hashmap is class that implements that and its not serialized HashMap is non serialized and Hashtable
Posted in
Computers & Technology by rocky singh at 5:22 AM on June 22, 2008
Well Gopal! When struct objects are used as hashtable keys, the lookup operation for the hashtable performs horribly. The reason for the poor performance lies in the GetHashCode method which performs, assume a hashtable creates five buckets. bucket-1 - value-a, value-b, value-c, , value-n bucket-2 - empty bucket-3 - empty bucket-4 - empty bucket-5 - empty Probably, all of the keys will be put into a
Posted in
Computers & Technology by Gopal Verma at 4:05 PM on December 02, 2008
When you have struct objects as the key in a hashtable, the lookup operation of the hashtable performs miserably. This can be attributes to the GetHashCode function which is used internally to do the lookup.If a struct contains only simple value types int, short, etc., the algorithm which computes the GetHashCode creates hashes which fall into mostly the same bucket.Example, lets say, the hashtable
Posted in
Computers & Technology by joydeep bhat at 12:06 AM on November 27, 2008
All the Mehods in HashTable are synchronized whereas HashMap is not thread-safe.Another big difference is that HashMap allows null key and null values whereas HashTable does not permit null key
Posted in
Computers & Accessories by Raj Pal at 12:18 PM on February 03, 2009
When you have struct objects as the key in a hashtable, the lookup operation of the hashtable performs miserably. This can be attributes to the GetHashCode function which is used internally to do the lookup.If a struct contains only simple value types int, short, etc., the algorithm which computes the GetHashCode creates hashes which fall into mostly the same bucket.Example, lets say, the hashtable
Posted in
Computers & Accessories by Ashok Kumar at 11:51 PM on December 21, 2008
You defined the wrong equals method. For example, you wrote:public class Car public Boolean equalsCar that return this == that;The correct equals method is as given below:public boolean equalsObject o if o instanceof Car Car c = Car o;if this.licensePlate.equalsc.license Plate return true;return fal
Posted in
Computers & Technology by joydeep bhat at 10:28 PM on December 18, 2008
All Objects in JavaScript implicitly support hash table like syntax by virtue of behaving as Associative Arrays. Properties of an object can be accessed in 2 ways as shown below:object.property = value;object["property"...] = value;So, when used in a hash table like syntax as shown above, y
Posted in
Computers & Accessories by Anand at 11:52 PM on November 04, 2008
XmlSerializer will refuse to serialize instances of any class that implements IDictionary, e.g. Hashtable. SoapFormatter and BinaryFormatter do not have this restriction.
Posted in
Exams, Education & References by Dinesh at 7:42 AM on January 29, 2008
