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Spring vs EJB. Can Spring replace EJB? [closed]
...would depend on the skills of your team. If you have no Spring expertise, and lots of EJB experience, then maybe sticking with EJB 3.0 is a good move.
App servers written to support the EJB standard can, in theory, be ported from one compliant Java EE app server to another. But that means staying...
In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? [dupli
...oach would be to check how many digits are output by Integer.toHexString() and add a leading zero to each byte if needed. Something like this:
public static String toHexString(byte[] bytes) {
StringBuilder hexString = new StringBuilder();
for (int i = 0; i < bytes.length; i++) {
...
Socket.IO - how do I get a list of connected sockets/clients?
...ion ONLY works with version prior to 1.0
UPDATED 2020 Mar 06
From 1.x and above, please refer to this link: getting how many people are in a chat room in socket.io
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Fastest way to iterate over all the chars in a String
... as byte[] by default.
SECOND UPDATE: As of 2016-10-25, on my AMDx64 8core and source 1.8, there is no difference between using 'charAt' and field access. It appears that the jvm is sufficiently optimized to inline and streamline any 'string.charAt(n)' calls.
THIRD UPDATE: As of 2020-09-07, on my Ry...
What is the difference between _tmain() and main() in C++?
...n does.
_tmain is a Microsoft extension.
main is, according to the C++ standard, the program's entry point.
It has one of these two signatures:
int main();
int main(int argc, char* argv[]);
Microsoft has added a wmain which replaces the second signature with this:
int wmain(int argc, wchar_t* ...
What's the purpose of META-INF?
...-INF folder containing some meta files. What is the purpose of this folder and what can I put there?
12 Answers
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Showing the stack trace from a running Python application
I have this Python application that gets stuck from time to time and I can't find out where.
28 Answers
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Downloading Java JDK on Linux via wget is shown license page instead
...M 9th June 2012
If you are looking to download the Oracle JDK from the command line using wget, there is a workaround. Run the wget command as follows:
wget --no-cookies --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com" "http://download.oracle.com/otn-pub/java/jdk/7/jdk-7-linux-x64.tar.gz"
Be ...
Hidden Features of C#? [closed]
...
lambdas and type inference are underrated. Lambdas can have multiple statements and they double as a compatible delegate object automatically (just make sure the signature match) as in:
Console.CancelKeyPress +=
(sender, e) =>...
How to send a command to all panes in tmux?
...s with a huge scrollback. However, I want to script a way to send this command to all the panes in the various windows.
7 A...