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How to use null in switch
...
This is not possible with a switch statement in Java. Check for null before the switch:
if (i == null) {
doSomething0();
} else {
switch (i) {
case 1:
// ...
break;
}
}
You can't use arbitrary objects in switch statements*. The reason tha...
Disable HttpClient logging
...ur exactly setup.
Commons-Logging can log to log4j, but it can also log to java.util.logging (JDK1.4 logging)
Commons-Logging tries to be smart and guess which logging framework you are already using, and send its logs to that.
If you don't already have a logging framework, and are running on a JRE ...
Benefits of prototypal inheritance over classical?
So I finally stopped dragging my feet all these years and decided to learn JavaScript "properly". One of the most head-scratching elements of the languages design is it's implementation of inheritance. Having experience in Ruby, I was really happy to see closures and dynamic typing; but for the li...
How do I fix "The expression of type List needs unchecked conversion…'?
In the Java snippet:
9 Answers
9
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Timer & TimerTask versus Thread + sleep in Java
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From the Timer documentation:
Java 5.0 introduced the java.util.concurrent package and one of the
concurrency utilities therein is the ScheduledThreadPoolExecutor which
is a thread pool for repeatedly executing tasks at a given rate or
delay. It is ...
How to add an image to a JPanel?
...e's how I do it (with a little more info on how to load an image):
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.JPanel...
What does -XX:MaxPermSize do?
...lly generate and load many classes; for example,
some implementations of JavaServer Pages (JSP) pages. These
applications may need a larger permanent generation to hold the
additional classes. If so, the maximum permanent generation size can
be increased with the command-line option -XX:MaxP...
How to update a value, given a key in a hashmap?
Suppose we have a HashMap<String, Integer> in Java.
17 Answers
17
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Develop Android app using C#
...Mono and dot42 are licensed products.
Personally, I would recommend using Java with the IntelliJ IDEA dev environment. I say this for 3 reasons:
There is so much Java code out there for Android already; do yourself a favour and don't re-invent the wheel.
IDEA is similar enough to Visual Studio as...
What are markers in Java Logging frameworks and what is a reason to use them?
...tps%3a%2f%2fstackoverflow.com%2fquestions%2f16813032%2fwhat-are-markers-in-java-logging-frameworks-and-what-is-a-reason-to-use-them%23new-answer', 'question_page');
}
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