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What is ActiveMQ used for - can we apply messaging concept using a Database?
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JMS, which is an API ActiveMQ implements, is an important cornerstone in Java Enterprise applications. This makes messages share a rather common format and semantic, which makes integration between different applications easier.
Of course, there are a lot of more detailed features that are only i...
Remove multiple keys from Map in efficient way?
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Just for the sake of completeness:
As guessed java.util.AbstractSet#removeAll really iterates over all entries, but with one little trick: It uses the iterator of the smaller collection:
if (size() <= collection.size()) {
Iterator<?> it = iterator();
wh...
Android studio using > 100% CPU at all times - no background processes appear to be running
...nly did so much, but I would still regularly see well over 100% for AS and java (over 300% when building!), and now it's in the single digits at rest. I'm on AS 3.4.1, fyi.
– pdub
May 24 '19 at 15:43
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How do I install Maven with Yum?
...tOS 6 with one exception. It installed OpenJDK 1.6 and made it the default Java version, even though I'd already manually installed JDK 8 (possibly because I'd manually installed it). To change it back use alternatives:
alternatives --config java
alternatives --config javac
and choose the correct...
SLF4J: Failed to load class “org.slf4j.impl.StaticLoggerBinder”. error
...st-machine was Ubuntu 10.10)
mvn --version
Apache Maven 2.2.1 (rdebian-4) Java version: 1.6.0_20 Java home:
/usr/lib/jvm/java-6-openjdk/jre Default locale: de_DE, platform
encoding: UTF-8 OS name: "linux" version: "2.6.35-32-generic" arch:
"amd64" Family: "unix"
2 Run maven externally link how to...
Good tutorials on XMPP? [closed]
...rtet on XMPP Development:
A good book: XMPP The Definivie Guide
A mature Java API. I've chosen the Smack Library from Ignite Realtime and used the groovy language with a buch of small scripts to learn the basics.
Later i developed a plugin for the OpenFire XMPP Server. There are some tutorials ...
Enterprise Library Unity vs Other IoC Containers [closed]
...is through XML it is generally avoided by .net shops. Although, many .net/Java shop use Spring.Net because of the similarity between the .net version of Spring.Net and the Java Spring project.
Note: Configuration in the code is now possible with the introduction of Spring.NET CodeConfig.
Windsor...
Passing Objects By Reference or Value in C#
...and out from c#, is it ok to say that c# passes parameters the same way as java does i.e. always by value. Is there any difference with java.
– broadband
Jun 3 '15 at 7:15
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Including dependencies in a jar with Maven
... prefer is to simply build a WAR-project,
even if it is only a stand-alone java application you are building:
Make a normal maven jar-project, that will build your jar-file (without the dependencies).
Also, setup a maven war-project (with only an empty src/main/webapp/WEB-INF/web.xml file, which w...
How can I pass a Bitmap object from one activity to another
...is not a best practice, if the bitmap object size is bigger, then you get "java.lang.SecurityException: Unable to find app for caller android.app.ApplicationThreadProxy......". the recommended way is like @slayton says, you have to save bitmap on external storage and pass just the URI.
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