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Why is Class.newInstance() “evil”?
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The Java API documentation explains why (http://java.sun.com/javase/6/docs/api/java/lang/Class.html#newInstance()):
Note that this method propagates any exception thrown by the nullary constructor, including a checked excepti...
Custom Adapter for List View
...tivity xml file, and an xml file for each list item type.
OptionsActivity.java:
public class OptionsActivity extends ListActivity {
private static final int LIST_ITEM_TYPE_1 = 0;
private static final int LIST_ITEM_TYPE_2 = 1;
private static final int LIST_ITEM_TYPE_COUNT = 2;
pri...
Redirect to an external URL from controller action in Spring MVC
...be taken as default, if the added thing is value ?
– JAVA
Sep 14 '18 at 12:14
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compareTo() vs. equals()
When testing for equality of String 's in Java I have always used equals() because to me this seems to be the most natural method for it. After all, its name already says what it is intended to do. However, a colleague of mine recently told me had been taught to use compareTo() == 0 instead of ...
Is SonarQube Replacement for Checkstyle, PMD, FindBugs?
... as a few other "plugins" such as Cobertura (code coverage) by default for Java projects. The main added value, however, is that it stores the history in a database. You can then see the trend. Are you improving the code base or are you doing the opposite? Only a tool with memory can tell you that.
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Convert hex string to int
...'s besides the point... thank you for the quick answer!!!! Also curse you java for your terrible error message... "It's to big" would have been helpful.
– Roloc
Jun 25 '12 at 18:03
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Why are dates calculated from January 1st, 1970?
...0) as default standard for time manipulation? I have seen this standard in Java as well as in Python. These two languages I am aware of. Are there other popular languages which follows the same standard?
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ConcurrentHashMap vs Synchronized HashMap
...read tries to modify it while another is iterating over it.
This article Java 7: HashMap vs ConcurrentHashMap is a very good read. Highly recommended.
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How to read environment variables in Scala
In Java, reading environment variables is done with System.getenv() .
6 Answers
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Hibernate Criteria returns children multiple times with FetchType.EAGER
...ase, and each order has 3 line items,
the resultset will be 15 rows. The Java result list of these queries
will have 15 elements, all of type Order. Only 5 Order instances will
be created by Hibernate, but duplicates of the SQL resultset are
preserved as duplicate references to these 5 insta...