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In log4j, does checking isDebugEnabled before logging improve performance?
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This is also the approach of java.util.Logging.
– Paul
Jun 14 '11 at 20:07
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FFmpeg on Android
...C++ code to export the functionality you need out of ffmpeg into a library java can interact with through JNI. The NDK allows you to easily link against the static libraries you've generated in step 1, just add a line similar to this to Android.mk: LOCAL_STATIC_LIBRARIES := libavcodec libavformat li...
Different types of thread-safe Sets in Java
... lot of different implementations and ways to generate thread-safe Sets in Java.
Some examples include
4 Answers
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com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
I'm working on getting my database to talk to my Java programs.
38 Answers
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Creating temporary files in Android
...se the File.deleteOnExit() method
https://developer.android.com/reference/java/io/File.html#deleteOnExit()
It is referenced here https://developer.android.com/reference/java/io/File.html#createTempFile(java.lang.String, java.lang.String, java.io.File)
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Load HTML file into WebView
... html page along with several other resources pointed by it (css files and Javascript libraries) that I would like to load into a WebView . How could this be achieved ?
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Java: Instanceof and Generics
Before I look through my generic data structure for a value's index, I'd like to see if it is even an instance of the type this has been parametrized to.
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Subclassing a Java Builder class
...s() method, and let it return the extending builder. This compiles because Java supports covariant return types.
public class GMOFacts extends NutritionFacts {
private final boolean hasGMO;
public static class Builder extends NutritionFacts.Builder {
private boolean hasGMO = false;
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Choosing a stand-alone full-text search server: Sphinx or SOLR? [closed]
... have to buy a commercial license (rationale)
Solr is easily embeddable in Java applications.
Solr is built on top of Lucene, which is a proven technology over 8 years old with a huge user base (this is only a small part). Whenever Lucene gets a new feature or speedup, Solr gets it too. Many of the ...
If i synchronized two methods on the same class, can they run simultaneously?
... the core concept is the intrinsic lock behind the scenes.
Here is how the Java tutorial describes the relationship:
Synchronization is built around an internal entity known as the intrinsic lock or monitor lock. (The API specification often refers to this entity simply as a "monitor.") Intrinsic l...