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Published on 2010-03-07T09:46:25Z
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2010/04/05
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In java, ArrayList and HashMap are using in collections. But i couldn't understand at which situations we should use ArrayList and which time use HashMap. What is the major difference between both of them?
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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…
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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…
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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…
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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…
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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…
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const jonny1 : Person = new Person("jonny", 26);
const jonny2 : Person = new Person("jonny", 26);
const table : Dictionary = new Dictionary();
table[jonny1] = "That's me";
trace(table[jonny1]) // traces: "That's me"
trace(table[jonny2]) // traces: undefined.
But I want use Dictionary like this…
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Hi All !
I have hashmap and its keys are like "folder/1.txt,folder/2.txt,folder/3.txt" and value has these text files data.
Now i am stucked. I want to sort this list. But it does not let me do it :(
Here is my hashmap data type:
HashMap<String, ArrayList<String>>
following function…
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Hi! I have a HashMap where the key is a word and the value is a number of occurrences of that string in a text. Now I'd like to reduce this HashMap to only 15 most used words (with greatest numbers of occurrences). Do you have any idea to do this efficiently?
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Hi,
I'm using a recursive tree of hashmaps, specifically Hashmap map where Object is a reference to another Hashmap and so on. This will be passed around a recursive algorithm:
foo(String filename, Hashmap<String, Object> map)
{
//some stuff here
for (Entry<String, Object> entry…
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I have the following structure:
HashMap< String, HashMap< String, String
Now i want to know the last accessed element in the 2nd dimension.
I know there is TreeMap which makes sense in the 1rst dimension but after that it doesn't make any sense.
How can I keep track of a 2D HashMap ordering…
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