I'm writing an class for a hash table in java... can you please make sure that I am doing it correctly so far.
I need to store StudentRecord objects in it.... ... |
I was reading the Java api docs on Hashtable class and came across several questions. In the doc, it says "Note that the hash table is open: in the ... |
In order to minimize the number of database queries I need some sort of cache to store pairs of data. My approach now is a hashtable (with Strings as keys, Integers ... |
I have a problem in Java hashtable serialization that seems illogical to me but i am not able to find out the error in the logic i am using. Here is ... |
I am having some problem with java hashtable. Following is my hastable key and values
{corpus\2.txt=[cat sparrow], corpus\4.txt=[elephant sparrow], corpus\1.txt=[elephant cow], corpus\3.txt=[cow cat]}
So if i want to access first tuple i ... |
What is Hashtables used for in Java? Further more please give examples of simple usage of Hashtables.
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I have a hashtable in java and want to iterate over all the value in the table and delete a particular key,value pair while iterating. Is there some way i could ... |
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Hi guys i've never written a comparator b4 and im having a real problem. I've created a hashtable.
Hashtable <String, Objects> ht;
Could someone show how you'd write a comparator for a ... |
Does anyone know a good website for learning how to create and implement hash tables for beginners in java?
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Why is the table field of Hashtable serialized, although it is marked as transient?
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I have created a program using the built in java.util.hashtable but now I need to resolve collisions using separate chaining. Is it possible with this implementation of a hashtable? ... |
What is the difference between a Hashtable and Properties?
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I'm developing tool, which takes Java code and generate code for getting estimations for execution time of basic blocks, loops and methods. After some block is executed, we put it's time ... |
at first i have a 2d array storing many numbers and then i used an array of hushtables to store pairs formed by the numbers of each row of the 2d ... |
Say I have a population of key-value pairs which I plan to store in a hash table. The population is fixed and will never change. What optimizations are available ... |
we know:
ArrayList;
LinkedList;
TreeMap
and other... and all names in CamelCase format, but why Hashtable, not HashTable?
it is unprincipled question, just wondering :)
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Now, I'm trying to understand how to construct the Hashtable.
The most interesting - as objects are added to the Hashtable?
I have read in a book that:
at first step:
Calculated hashCode() object.
Next, we ... |
I have coded something which would return the contents of a excel sheet as a hashTable. The code is
public Object[][] validDataProviderScenarioOne() {
...
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I'm writing a J2ME class which reads variable keys and contents from a resource file (as strings). I would like to store those data in something like a HashTable for faster ... |
When I add some items into a Java Hashtable, their order is different to that of a .NET Hashtable. Is there any way I can make sure the .NET Hashtable will ... |
I have a question about duplicate Hashtables in Java (maybe duplicate Java Collections).
My Hashtable have pairs like this:
- Key: String
- Value: Objects of type
C
C looks like this:
public interface A extends Cloneable, Serializable{...}
public ...
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I've heard in my degree classes that a HashTable will place a new entry into the 'next available' bucket if the new Key entry collides with another.
How would the HashTable still ... |
Possible Duplicate:
Java hashmap vs hashtable
Any advantage of switching from HashMap over to Hashtable?
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provide me the code to implement hashtable as a value of another hashtable..
(i.e) when i find a value using the key in 1st hash table that value should contain ... |
I have a method that creates a hashtable..that method's signature is
void CreateHashTable(String KeyType,String ValueType)
I want something like this
Hashtable<KeyType,ValueType> hashtable1;
so that I create my hashtable key,value according to ... |
package datastrcutures;
import java.util.*;
public class java_hashtable {
public static void ratingofcity() {
Hashtable CityRating = new Hashtable();
...
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My code returns entrySet() as expected if called from within its own class. However if i call it via a getter method in Main it returns an empty table. Why?
class ...
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I'm working on a Game Engine in Java and been trying to make the decision process for onscreen drawing take the least amount of time. So I've been using a ... |
Currently I have the code below to put the data in a Hash.
My question: which value do i have to put in the part of !!!SOMETHING!!!.
The code only has ... |
I am using the latest version of Java for x64.
java version "1.6.0_24"
Java(TM) SE Runtime Environment (build 1.6.0_24-b07)
Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02, mixed mode)
I found out that the Hashtable has ... |
I have some old 3rd party Java code I am converting to Java 6. It contains HashTable instances, which are flagged as obsolete collections. What should I replace them with? What ... |
Possible Duplicates:
Dynamic table in lwuit
HashTable to Lwuit Table
Please give me Some example
After parsing a JSON String I want to put ... |
public void setParameter(String name, String []values) {
if (debug) System.out.println("LoginFilter::setParameter(" + name + "=" + values + ")" + " localParams = "+ localParams);
if ...
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I have a set of classes that implement a certain interface. I have put all those classes in a Hashtable ht like this:
ht.put(str,backend.instructions.ADC.class);
But when I call the get() function of ... |
I want to create a Hashtable in Java program. The Hashtable must have multiple fields (for now i want to store 3 columns which i read from DB). How can I ... |
I am trying pass a Hashtable as parameter into a method which itself passes that same table into another method:
public class Recruiter {
...
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Is there a way to write a static final Hashtable in java in key value pairs just like you can initialize a string array conveniently as :
String [] ...
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I have an interface Node that asks for the method:
public HashSet getNeighbour();
NodeVariable implements Node, and its neighbours are of type NodeFunction (that implements Node, too), and I wrote the method:
public HashSet<NodeFunction> ... |
I have n classes which either stack or do not stack on top of one another. All these classes extend the same class (CellObject). I know that more classes will be ... |
I am writing a program that will hash words from a document along with their frequency of use and line numbers. I thought that I had finished it when I was ... |
As we know the purpose of "final" keyword in java. While declaring a variable as final, we have to initialize the variable. like "final int a=10;"
We can not ... |
I'm in a data structures class and we have an assignment that includes creating a hash table for a latin dictionary and on the getDefinition method in the LatinDictionary class ... |
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i have a file address.txt which has user id and address.I have parsed the file using string tokenizer as "*". My question is how should i put the tokenized value in the hashtable so that if i give the user id as the i/p i should get the corresponding address. My hashtable is "storer" |
My application uses a hashtable to store important information. We want to make a backup of this hashtable on the filesystem every 5 minutes. My plan is as follows: 1. clone the hashtable 2. write the clone to a tempfile using an ObjectOutputStream 3. move the tempfile to the real backupfile ad 1. I do this because I am afraid that ... |
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I wanted to discuss efficiency issues with the above. Here's some background info: Recently I started using the enum type and liked its capabilities. The example below is based on simple Role Playing Game concepts: // constants defining various types of abilities, good for readability. public static enum Abilities {strength, dexterity, constitution, wisdom, intelligence, charisma}; // Then you have an array ... |
//my code String apl_code_var = null; String admd_to_srvr_ip_adrs_var = null; String project_code_var = null; if (request.getAttribute("server_ip") != null){ iCount = 0; server_ip = (java.util.Hashtable)request.getAttribute("server_ip"); if (server_ip.size() > 0) { enumHash = server_ip.elements(); while (enumHash.hasMoreElements()) { childHash = (java.util.Hashtable)enumHash.nextElement(); project_code_var = (String) childHash.get("PROJECT"); apl_code_var = (String) childHash.get("APL_CODE"); admd_to_srvr_ip_adrs_var = (String)childHash.get("ADMD_TO_SRVR_IP_ADRS"); myList.add((String)childHash.get("ADMD_TO_SRVR_IP_ADRS")); %> |