We are in web era standalone applications are almost gone everyone wants their internet application to run inside browser, programming languages like Ruby, Python and scala are becoming more and more mainstream.
Sometimes I wonder what these programming language offer which make them top choice of IT companies, if I plan to become a freelance web developer is it worth learning C# or Java. I read beginner's book for both of them, but to master any of them require some time investment.
In Java, to create and show a new JFrame, I simply do this:
public static void main(String[] args)
{
new JFrame().setVisible(true);
}
However, I have seen many people doing it like this:
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
new JFrame().setVisible(true);
}
});
}
Why? Are there any advantages?
I'm taking user input from System.in using a java.util.Scanner. I need to validate the input for things like:
It must be a non-negative number
It must be an alphabetical letter
...etc
What's the best way to do this?
I have an iPhone application and I am porting it over to Android.
I have a service/controller that spawns new threads to perform some network tasks.
I use performSelectorOnMainThread in my iPhone app. How can I have my Java app do the same or similar thing?
Hi,
I am trying to send a file through a java socket and receive it through another. However, this happens:
Send Content:
/*
This is simply a file to transfer
*/
Received:
¨Ì
I'm trying to extend a Java Swing component in Clojure, i.e. I want to extend a javax.swing.JComponent and add some custom methods implemented in pure Clojure in addition to all the standard inherited methods.
I've tried using "proxy" which works great if I just want a single instance (in the same way as an anonymous inner class). However I'd really like a named class so that I can generate an arbitrary number of instances.
What's the recommended way of doing this?
I have seen that there many books titled
1)Build Ecommerce website in php
2)Build shopping cars in php or asp.net
Is there any book which explains from scratch how to start building a website in java using any frame work or with servlets or jsp
like
1)Basic form with logins and registration
2)building catalogue system
3)Building shopping cart
4)Building newletters system
So i can strat reading it
hi, simple question :
I need to write cross platform application (basically CRUD).
Is usage of Java Swing good idea? Or is it out-dated and you know better solution?
I dont want to use like 5 languages for various stuff, one or two should be enough.
Thanx!
Hi
I'm new to java.
I'm trying to use some dynamically loaded classes in my application.
The application doesn't know classes , Just it try to load a class by name that its name came from input.
It doesn't know class (So I can't use casting) but just needs to call some methods of that class (every class should have that methods).
I thought about interfaces but I don't know how.
How can I call those methods?
Thanks
I'm writing a program that uses scp to copy files in a bigger java program. As it stands now, the program freezes up while the scp is copying the file, which can take a few minutes, so I'd like to be able to display the progress of the scp or at the very least get the terminal window with the scp progress to show up! Any suggestions?
Is it possible to create a simple server in Java that returns a response based on a given key?
So it would be a simple program, that stores a hashmap and returns the result based on a key provided by the client.
What would be the fasted implementation, to have it over HTTP or a socket? The client will be a web based application.
I have a big program in Java that uses multithreading. In some cases, the program starts using 100% of three cores of my eight core system. In normal use, the program use all cores at 1-2%. How can I find the class that's overloading cores?
Hi
I am noob to parsers.I like to fetch specific data from a website I need to use parsers for that. Can anybody please tel me how to get started with parsers.What do I need to download?
Can anybody the code to fetch the data from a website using parsers in java.
Thanks in advance.
Do you know a good guide for Java, such as "dive into python" for python?
If I searched google I expect I would find tons of random guides, but trying them all until I found a good one could take ages... that's why I am asking: do you already know one in particular? one you KNOW is good?
I already know C, PHP and a bit of Python, if that matters.
I want to write a socket channel program using which I can send a file from the client program to the server program. I want to create this program using Java.
Is there any other on-line help is available
So how to overcome this problem.
Thanks
Sunil Kumar Sahoo
I need to write a custom batch File renamer. I've got the bulk of it done except I can't figure out how to check if a file is already open. I'm just using the java.io.File package and there is a canWrite() method but that doesn't seem to test if the file is in use by another program. Any ideas on how I can make this work?
Is there a way to access the Java Plug-in Control Panel programatically? Or at least find the places in the Windows File System where the information backing that control panel is stored?
Possible Duplicate:
The Definitive C++ Book Guide and List
What is the best text book a beginner (non-CS major) can buy to master C++? And for Java?
Thanks
I have a neural network written in Java which uses a sigmoid transfer function defined as follows:
private static double sigmoid(double x)
{
return 1 / (1 + Math.exp(-x));
}
and this is called many times during training and computation using the network. Is there any way of speeding this up? It's not that it's slow, it's just that it is used a lot, so a small optimisation here would be a big overall gain.