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What is an ORM, how does it work, and how should I use one? [closed]
...l use the same principles. There are a lot of ORM libraries around here:
Java: Hibernate.
PHP: Propel or Doctrine (I prefer the last one).
Python: the Django ORM or SQLAlchemy (My favorite ORM library ever).
C#: NHibernate or Entity Framework
If you want to try an ORM library in Web programming,...
POST JSON fails with 415 Unsupported media type, Spring 3 mvc
...how I fixed it,
The problem is due to the conversion process from JSON to Java, one need to have the right run time jackson libraries for the conversion to happen correctly.
Add the following jars (through dependency or by downloading and adding to the classpath.
<dependency>
<groupId>...
Activity has leaked window that was originally added
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The solution is to call dismiss() on the Dialog you created in viewP.java:183 before exiting the Activity, e.g. in onPause(). All Windows&Dialogs should be closed before leaving an Activity.
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Best way to convert text files between character sets?
...$1
mv $1.tmp $1
}
..to be able to convert files like so:
utf8 MyClass.java
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How to measure time taken between lines of code in python?
So in Java, we can do How to measure time taken by a function to execute
7 Answers
7
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Calling static generic methods
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New link location would probably be: docs.oracle.com/javase/specs/jls/se8/html/…
– Joanis
Nov 27 '14 at 20:07
3
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JPA eager fetch does not join
...h fetch hint
query.setHint("eclipselink.batch", "e.address");
see
http://java-persistence-performance.blogspot.com/2010/08/batch-fetching-optimizing-object-graph.html
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Meaning of epsilon argument of assertEquals for double values
...ly ever seen delta, not epsilon - but that's a side issue!
From the JUnit javadoc:
delta - the maximum delta between expected and actual for which both
numbers are still considered equal.
It's probably overkill, but I typically use a really small number, e.g.
private static final double DE...
Get source jar files attached to Eclipse for Maven-managed dependencies
...aven (and the Maven Eclipse Integration) to manage the dependencies for my Java projects in Eclipse. The automatic download feature for JAR files from the Maven repositories is a real time saver. Unfortunately, it does not include API documentation and source code.
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Webdriver Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms
...to test with Selenium:
https://github.com/SeleniumHQ/selenium/blob/master/java/CHANGELOG
This might help to answer the above question.
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