I am a Java EE developer working mainly with JSPs, Servlets, and frameworks like Spring.
Will learning PHP be a wise decision ?
What would PHP offer me ?
Hello,
I have a problem. I need to host many (tens, hundreds) of small identical JAVA web applications that have different loads during one time. I want to use Glassfish V3. Do I need to use a load balancer and clusters or something else? Advise where can I find information about similar problems and their solutions...
Best regards,
Alexey.
I'd like to communicate with a USB device under Windows and Java but I can't find a good library to do so. I don't want the user to have to install any extra hardware or device drivers to make this work. That is, I want to be able to interact with USB just like other Windows applications do.
I am familiar with jUSB and JSR 80 but both seem to be dead projects (at least for Windows).
I'm looking for some simple tasks like listing all the running process of a user, or kill a particular process by pid etc. Basic unix process management from Java. Is there a library out there that is relatively mature and documented? I could run a external command from the JVM and then parse the standard output/error but that seems like a lot of work and not robust at all. Any suggestions?
In Java, an array IS AN Object. My question is... is an Object constructor called when new arrays is being created? We would like to use this fact to instrument Object constructor with some extra bytecode which checks length of array being constructed. Would that work?
I want to write a plug-in which tracks the updates to a text file and stores them in a separate file.
Should I first write a simple java program which does this and then try to convert it into a plug-in?
I've created java webservices and clients using Netbeans. However, the clients seem to have the WSDL already 'built-in'.
Is there an easy way of making my client fetch and parse the WSDL code upon execution, so that if the webservice moves to another server, the client is just invoked with a different commandline argument for where to find the webservice?
how to take user input in Array using Java?
i.e we are not initializing it by ourself in our program but the user is going to give its value..
please guide!!
Hi All,
I have a JAR on the build path of a medium sized Java application and I would like to know where it's used. At the most basic level if someone could tell me how to 'Find References' for a Jar that would be great.
Whilst I'm looking at dependencies it would be great to find a tool that would map all of my package / external library usages and graph them. I used to have a free plug-in for eclipse that did just that but I haven't been able to rediscover it.
Thanks,
Gav
Lazy programmer alert. :)
Cassandra stores column values as bytes (Java example). Specifying a LongType comparator compares those bytes as a long. I want the value of a long into a Cassandra-friendly byte[]. How? I poked around for awhile. I think you people can help me faster.
How can I get client side information using either Javascript or Java Servlets?
Client side information such as client's computer name, its IP Address etc.
Thanks in advance.
We use socket.send(packet) function in java to send a "packet" to a given port.
My problem is that i have to send a packet to a shutdown system using UDP protocol.
The problem with send() function is that first it verifies whether the host IP is
multicast or not. Now my local area network is of broadcast type. So i am having
problem is using this function.
can anyone please give me a way ?
I am using JNI to initialize classes in my jar files present at the classpath. But created executable uses java and displays ugly command prompt when my program starts. I want to configure my JNI to use javaw instead. How can I achieve it?
Platform: Windows 7
Do you know a tutorial how to create a CXF web service from existing Java code and embed it in Tomcat, and also generate a wsdl file so that any .NET system would be able to generate client code easily?
I miss that WSDL creation point in, for example this
http://www.ibm.com/developerworks/library/ws-pojo-springcxf/
tutorial. No wsdl file is generated. But still it should be present in my case to provide system interoperability.
Hello all,
When running a thread in Android/Java:
public void run()
{
while (running)
{
if (moreTasksToExec())
{
task = getNextTask()
task.exec();
}
}
}
Is it OK to let it run and not using a semaphore to block while no work needs to be executed?
I am only using one thread, so I need no inter-thread synchronization.
Are they same ?
Came across this line when reading about Java's main method's signature
"String args[ ] declares a parameter named args, which is an array of instances of the class String. Objects of type String store character strings."
I'm trying to encourage a best practice of not catching general exceptions in Java code. eg:
try {
...
} catch (Exception e) { // bad!
...
}
Is there a way to flag this as an error/warning in Eclipse?
I know PMD picks this up, but I'd rather avoid integrating it into everyone's build environment at the moment.
If I have the following table schema to log an exception (in standard SQL schema):
Table: ExceptionLog
Columns: ID (Long),
ExceptionClass (String),
ExceptionMessage (String),
Host (String),
Port (Integer),
HttpHeader (String),
HttpPostBody (String),
HttpMethod (String)
How would I design the same thing in HyperTable (specifically, what is the best approach for efficiency)? And, how would I code it using the HyperTable Java client?
I'm developing a website that uses some complex computations (NLP-related). My customer wants to have "debugging" webpages for some of these computations where he can run them with arbitrary input and see all the intermediate results that occur during computation.
Before this request all of the computations were encapsulated in beans and intermediate results were logged into general log.
What is the best way to capture all these results on Java level to render them as webpage?