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Collections.emptyList() returns a List?
I'm having some trouble navigating Java's rule for inferring generic type parameters. Consider the following class, which has an optional list parameter:
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How to create an array of 20 random bytes?
How can I create an array of 20 random bytes in Java?
6 Answers
6
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What's the point of JAXB 2's ObjectFactory classes?
... cannot work with POJOs, because the schema cannot be mapped exactly on to Java. In these cases, JAXBElement wrapper objects are necessary to provide the additional type information.
There are two concrete examples that I've come across where this is common.
If you want to marshal an object of a ...
Sass or Compass without ruby?
... At this point, you can use the Sass engine in Ruby, Node.js, Python, PHP, Java, .NET and others. For more information, visit libSass. Also, your IDE might have a plugin which would support Sass, without the need of ruby by using the libSass.
The original answer below may or may not apply to your s...
How do you see recent SVN log entries?
...-04-02 15:31:31 +0200 (Mon, 02 Apr 2012) | 1 line Changed
paths:
A /trunk/java/App/src/database/support
A /trunk/java/App/src/database/support/MIGRATE
A /trunk/java/App/src/database/support/MIGRATE/remove_device.sql
D /trunk/java/App/src/code/test.xml
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How to convert a String into an ArrayList?
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In Java 9, using List#of, which is an Immutable List Static Factory Methods, become more simpler.
String s = "a,b,c,d,e,.........";
List<String> lst = List.of(s.split(","));
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Why use a prime number in hashCode?
...e number of buckets is unlikely to be divisible by it (and in fact, modern java HashMap implementations keep the number of buckets to a power of 2).
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How to convert a char to a String?
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@BinkanSalaryman using javac 1.8.0_51-b16 and then javap to decompile, I see the constructor/method calls I have in the answer. What are you using?
– Paul Bellora
Jul 24 '15 at 2:55
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Tomcat startup logs - SEVERE: Error filterStart how to get a stack trace?
....level = INFO
org.apache.catalina.core.ContainerBase.[Catalina].handlers = java.util.logging.ConsoleHandler
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How can I use tabs for indentation in IntelliJ IDEA?
...changed a little:
File > Settings... > Editor > Code Style > Java > Tabs and Indents > Use tab character
File > Other Settings > Default Settings... > Editor > Code Style > Java > Tabs and Indents > Use tab character
File > Settings... > Editor > Co...