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Why is Scala's immutable Set not covariant in its type?
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at http://www.scala-lang.org/node/9764 Martin Odersky writes:
"On the issue of sets, I believe the non-variance stems also from the implementations. Common sets are implemented as hashtables, which are non-variant arrays of the key type. I a...
Is there a Java equivalent to C#'s 'yield' keyword?
I know there is no direct equivalent in Java itself, but perhaps a third party?
6 Answers
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What does 'synchronized' mean?
...the same variables, objects and resources. This is not a trivial topic in Java, but here is a quote from Sun:
synchronized methods enable a simple
strategy for preventing thread
interference and memory consistency
errors: if an object is visible to
more than one thread, all reads or
w...
Get file name from URL
In Java, given a java.net.URL or a String in the form of http://www.example.com/some/path/to/a/file.xml , what is the easiest way to get the file name, minus the extension? So, in this example, I'm looking for something that returns "file" .
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Difference of Maven JAXB plugins
...com/highsource/maven-jaxb2-plugin)
the maven-jaxb-plugin (https://jaxb.dev.java.net/jaxb-maven2-plugin/)
the jaxb2-maven-plugin (https://github.com/mojohaus/jaxb2-maven-plugin)
Based on the comments of this thread, I've always used the maven-jaxb2-plugin (i.e. plugin #1):
Concerning the
org....
Read logcat programmatically within application
...roid.com/studio/command-line/logcat.html
import android.util.Log;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.Stack;
/**
* Create...
How to use wait and notify in Java without IllegalMonitorStateException?
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While using the wait and notify or notifyAll methods in Java the following things must be remembered:
Use notifyAll instead of notify if you expect that more than one thread will be waiting for a lock.
The wait and notify methods must be called in a synchronized context. See t...
Java split() method strips empty strings at the end? [duplicate]
...n as often as possible with:
String[] de = data.split(";", -1);
See the Javadoc for the split method taking two arguments for details.
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How do I change the string representation of a Python class? [duplicate]
In Java, I can override the toString() method of my class. Then Java's print function prints the string representation of the object defined by its toString() . Is there a Python equivalent to Java's toString() ?
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Get total size of file in bytes [duplicate]
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please refer to docs.oracle.com/javase/6/docs/api/java/nio/channels/…
– Hui Zheng
Jan 23 '13 at 15:38
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