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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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Disabling contextual LOB creation as createClob() method threw error
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Which java version did you try this with? Intellij is unable to find this property.
– comiventor
Dec 6 '17 at 8:53
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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');
}
);
Post as a guest
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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...
slf4j: how to log formatted message, object array, exception
...ew Exception("something went wrong")});
will yield
one two three: a b c
java.lang.Exception: something went wrong
at Example.main(Example.java:13)
at java.lang.reflect.Method.invoke(Method.java:597)
at ...
The exact output will depend on the underlying framework (e.g. logback, log4j...
Maximum number of threads per process in Linux?
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Thank you, it finally allowed me to break through the 32k Java thread count.
– berezovskyi
Mar 11 '16 at 23:12
1
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Sort objects in ArrayList by date?
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Since Java 8 the List interface provides the sort method. Combined with lambda expression the easiest solution would be
// sort DateTime typed list
list.sort((d1,d2) -> d1.compareTo(d2));
// or an object which has an DateTime a...