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How to set Java environment path in Ubuntu
...e and then do the following:
Assuming you are using bash (if you are just starting off, i recommend bash over other shells) you can simply type in bash to start it.
Edit your ~/.bashrc file and add the paths as follows:
for eg. vi ~/.bashrc
insert following lines:
export JAVA_HOME=/usr/java/<...
WebRTC vs Websockets: If WebRTC can do Video, Audio, and Data, why do I need Websockets? [closed]
... signaling.
I maintain a list of WebRTC resources: strongly recommend you start by looking at the 2013 Google I/O presentation about WebRTC.
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What's the easiest way to install a missing Perl module?
...
On Unix:
usually you start cpan in your shell:
# cpan
and type
install Chocolate::Belgian
or in short form:
cpan Chocolate::Belgian
On Windows:
If you're using ActivePerl on Windows, the PPM (Perl Package Manager) has much of the same f...
Declaring variables inside or outside of a loop
... public static void main(String[] args) throws Exception {
long start = System.currentTimeMillis();
double test;
for (double i = 0; i < 1000000000; i++) {
test = i;
}
long finish = System.currentTimeMillis();
System.out.println("Test1...
Cannot refer to a non-final variable inside an inner class defined in a different method
...ence where the String object "hello" lives in heap
}
}.start();
// change the reference 'shared' points to, with a new value
shared = "other hello";
System.out.println(shared);
}
}
That won't work, because this is what the compiler does under the h...
How to get a path to a resource in a Java JAR file
...JAR, especially if a JAR (or any program, for that matter) is run from the Start Menu under Windows. So here is what I did, and it works for .class files run from outside a JAR just as well as it works for a JAR. (I only tested it under Windows 7.)
try {
//Attempt to get the path of the actual ...
Creating a byte array from a stream
... the stream or your specified size, but you still have to know the size to start with.
The above method will keep reading (and copying into a MemoryStream) until it runs out of data. It then asks the MemoryStream to return a copy of the data in an array. If you know the size to start with - or thin...
Make sure only a single instance of a program is running
... in Ubuntu 16. And killing the process by any means allowed another one to start. Dimon I think you did something wrong in your test. (Perhaps you forgot to make your script sleep after the above code ran, so it immediately exited and released the socket.)
– Luke
...
What is “2's Complement”?
... binary.
It basically says,
for zero, use all 0's.
for positive integers, start counting up, with a maximum of 2(number of bits - 1)-1.
for negative integers, do exactly the same thing, but switch the role of 0's and 1's (so instead of starting with 0000, start with 1111 - that's the "complement" p...
How to stop an unstoppable zombie job on Jenkins without restarting the server?
...
I had this with a Pipeline job that started other jobs. The server crashed, the other jobs were gone, but the pipeline job was still a zombie. I first tried the accepted answer, to no avail. I had to run @Alexandru's command several times, each time I saw the p...