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Why is spawning threads in Java EE container discouraged?
...within the environment are meant to be managed, and potentially monitored, by the server. Also, much of the context in which a thread is being used is typically attached to the thread of execution itself. If you simply start your own thread (which I believe some servers will not even allow), it ca...
Sort objects in ArrayList by date?
...I find is about doing this alphabetically, while I need my elements sorted by date.
13 Answers
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How to sort a list of lists by a specific index of the inner list?
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Itemgetter lets you to sort by multiple criteria / columns:
sorted_list = sorted(list_to_sort, key=itemgetter(2,0,1))
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Runtime vs. Compile time
...e whatever the programmer put in. Run-time invariants are rarely enforced by the compiler alone; it needs help from the programmer.
What can go wrong are run-time errors:
Division by zero
Dereferencing a null pointer
Running out of memory
Also there can be errors that are detected by the progra...
An existing connection was forcibly closed by the remote host
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This generally means that the remote side closed the connection (usually by sending a TCP/IP RST packet). If you're working with a third-party application, the likely causes are:
You are sending malformed data to the application (which could include sending an HTTPS request to an HTTP server)
Th...
How to Loop through items returned by a function with ng-repeat?
I want to create divs repeatedly, the items is objects returned by a function. However the following code report errors:
10 $digest() iterations reached. Aborting! jsfiddle is here: http://jsfiddle.net/BraveOstrich/awnqm/
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Side-by-side plots with ggplot2
I would like to place two plots side by side using the ggplot2 package , i.e. do the equivalent of par(mfrow=c(1,2)) .
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Get cookie by name
...return parts.pop().split(';').shift();
}
Walkthrough
Splitting a string by token will produce either, an array with one string (same value), in case token does not exist in a string, or an array with two strings , in case token is found in a string .
The first (left) element is string of what w...
How do I discover memory usage of my application in Android?
... dalvik. */
public int dalvikPss;
/** The private dirty pages used by dalvik. */
public int dalvikPrivateDirty;
/** The shared dirty pages used by dalvik. */
public int dalvikSharedDirty;
/** The proportional set size for the native heap. */
public int nativePss;
/**...
How is CountDownLatch used in Java Multithreading?
...ntDownLatch.await() will wait until count reaches zero or it's interrupted by another thread. All other threads are required to count down by calling CountDownLatch.countDown() once they are completed or ready.
As soon as count reaches zero, the waiting thread continues. One of the disadvantages/a...