Hi..i wanted to develop a whiteboard application..i know the basics of java..but have no idea where to start from..so..i'd really appreciate if you could guide me..as in..where do i start from??
how do you get source ip, username, password, etc... of the client machine that sends a soap request? is there any of these details that one can pull for logging purposes?
I am using Java to handle the incoming SOAP requests. The service simply adds 2 numbers and is working, but I just need to get some client details.
Thanks, Lavanya
Im getting classnotfountexception on Class.forname("com.mysql.jdbc.Driver")
im using:
windows vista 64-bit,
Eclipse Galileo,
GWT framework
i downloaded (mysql-connector-java-5.1.6-bin), but what the exact path i should add to.
im getting this exception while im in gwt-projects, but normal projects working good,
any idea how that should be done???...thanks
I have a mixed Java / C# project and use an ant script that contains a csc task to compile the dll. This works, but I get a warning
[csc] This task is deprecated and will be removed in a future version
[csc] of Ant. It is now part of the .NET Antlib:
[csc] http://ant.apache.org/antlibs/dotnet/index.html
How can I replace the csc task? I can surely create an exec task calling nant with a project.build file, but that feels completely wrong.
I am new to web development, I have to create a web application in Java using GWT that connects to a database and download a file from it. Regardless of the type of database, what does the web application need in order to create a connection with the database? E.g. an API
I'm trying to use XMLTask 1.16, but, unfortunately, I got error,
java.lang.UnsupportedClassVersionError: Bad version number in .class file, all the time. But if I switch back to XMLTask 1.15, it work fine. Does anyone know how to make XMLTask 1.16 work with Ant.
I'm trying to send an email in Java but when I read the body of the email in Outlook, it's gotten rid of all my linebreaks. I'm putting \n at the ends of the lines but is there something special I need to do other than that? The receivers are always going to be using Outlook.
I found a page on microsoft.com that says there's a 'Remove line breaks' "feature" in Outlook so does this mean there's no solution to get around that other than un-checking that setting?
Thanks
Is there a way to detect the character encoding set in the terminal which is calling my Java program? In Windows I can call the "chcp" tool and parse the output.
But what about in Linux or Mac?
I have a quadcore processor and I would really like to take advantage of all those cores when I'm running quick simulations. The problem is I'm only familiar with the small Linux cluster we have in the lab and I'm using Vista at home.
What sort of things do I want to look into for multicore programming with C or Java? What is the lingo that I want to google?
Thanks for the help.
I heard that using shorts on 32bit system is just more inefficient than using ints. Is this the same for ints on a 64bit system?
Python recently(?) basically merged ints with long and has basically a single datatype long, right? If you are sure that your app. will only run on 64bit then, is it even conceivable (potentially a good idea) to use long for everything in Java?
Hello Guys
i just want to create a simple application that will allow a user to input a url to a rss feed and display the contents to a user.
what would be a good java library to enable me to read rss feeds?
cheers
Resolving an xpath that includes namepsaces in Java appears to require the use of a NamespaceContext object, mapping prefixes to namespace urls and vice versa. But I can find no mechanism for getting a NamespaceContext other than implementing it myself. This seems counter-intuitive. Is there any easy way to acquire a NamespaceContext from a document, or to create one, or failing that, to forgo prefixes altogether and specify the xpath with fully qualified names?
I have 3 boxes, each box contain 10 piece of numbered paper (1 - 10) but there is a number the same in all 3 boxes eg: box1 has number 4 and box2 has number 4 and box3 also has number 4. How to find that repeated number in java with an efficient/fastest way possible?
Hi I have host web application which is developed using java and jsp. In client side each client give five ajax calls to the server to retrieve data from the server in every 30 seconds.
My problem is can one user who use one browser to log in to the system have multiple session at a time. Reason is when i use the tool to use monitor the firewall I can see more than 10 sessions are active for one IP. How this can happen? any comments
We have a very strange problem in out application, all of a sudden we started noticing upside down question marks being saved along with other text typed in to the fields on the screen. These upside down question marks were not originally entered by the users and it is unclear where they come from. We are using Oracle 10g with java.
And this is happening, even when no data is copied from Microsoft Word
I know I can find out if a variable is null in Java using these techniques:
if (var==null) - too much work
try { ... } catch (NullPointerException e) { ...} - it tells me what line is throwing the exception
using the debugger - by hand, too slow
Consider this line of code:
if (this.superSL.items.get(name).getSource().compareTo(VIsualShoppingList.Source_EXTRA)==0) {
I would like to know if there's a generic way to find out programatically what variable (not just the line) is throwing the NullPointerException in a certain area of code. In the example, knowing that
Hello, I want to write a default Logger for my application. Currently I am using the default Java API Class Logger .
I was wondering if it's possible to format my logs to look somthing like this:
[level] [dd:MM:YYYY] [hh:mm:ss] message
The logger should also be able to print the messages into the System.out and into a file ?
Where should I look for this functionality ?
Can you please give me some code snippets ?
I am trying to create a program that asks the User to type three words and sort them in lexicographic order.
EXAMPLE;
Enter three words separated by spaces:
Pear Orange Apple
Apple
Orange
Pear
The program is working fine (if I attempt the above example) except for one type of combination example that I will show below.
EXAMPLE;
Enter three words separated by spaces:
Orange Apple Pear
Apple
Pear
Pear
The program is skipping the first word (Orange) if it is supposed to appear in the middle of the three words.
I believe that this line of code is affecting the program because it says that "this assigned value is never used" but I'm not sure how to fix it since I'm still an entry Java learner.
middle = firstWord;
Because of that line being unused, it's why Pear appeared twice.
import java.util.*;
public static void main(String[] args)
{
Scanner wordInput = new Scanner(System.in);
String firstWord;
String secondWord;
String thirdWord;
System.out.println("Enter three words separated by spaces: ");
firstWord = wordInput.next();
secondWord = wordInput.next();
thirdWord = wordInput.next();
String top = firstWord;
String bottom = firstWord;
if( top.compareTo(secondWord) > 0)
{
top = secondWord;
}
if( top.compareTo(thirdWord) > 0)
{
top = thirdWord;
}
if( bottom.compareTo(secondWord) < 0)
{
bottom = secondWord;
}
if( bottom.compareTo(thirdWord) < 0)
{
bottom = thirdWord;
}
String middle;
if( !firstWord.equals(bottom) && !firstWord.equals(top) )
{
middle = firstWord;
}
if( !secondWord.equals(bottom) && !secondWord.equals(top) )
{
middle = secondWord;
}
else
{
middle = thirdWord;
}
System.out.println( top );
System.out.println( middle );
System.out.println( bottom );
}
}
Does anyone what I am missing or doing wrong? :(
Please and thank you for any help!
I have a java main application, and I want to use log4j.
I don't want to hard code my settings, so where do I put the log4j config file so my application can find it?
In Java, how can I construct a Type object for Map<String, String>?
System.out.println(Map<String, String>.class);
doesn't compile. One workaround I can think of is
private Map<String, String> dummy() { throw new Error(); }
Type mapStringString = Class.forName("ThisClass").getMethod("dummy", null).getGenericReturnType();
Is this the correct way?
I want to know if it is possible to send PUT, DELETE request (practically) through java.net.HttpURLConnection to HTTP-based URL. I have read so many articles describing that how to send GET, POST, TRACE, OPTIONS request but still not finding any sample code which successfully perform PUT and DELETE request. Can any one give idea regarding that?
Hello,
How can I write DAO method which will return as a result only first entry from the database. For instance lets say I'm looking at Users table and I want to retrieve only the first entry, I'd declare method like:
public User getFirstUser(){
//method logic
}
EDIT:
User has primary key id if that matters at all.
I apologize if this question is too simple/stupid/whatever I'm beginner with Java so I'm trying new things. thank you