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What is InputStream & Output Stream? Why and when do we use them?
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From the Java Tutorial:
A stream is a sequence of data.
A program uses an input stream to read data from a source, one item at a time:
A program uses an output stream to write data to a destination, one item at time:
The d...
Java String remove all non numeric characters
Trying to remove all letters and characters that are not 0-9 and a period. I'm using Character.isDigit() but it also removes decimal, how can I also keep the decimal?
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Launching Spring application Address already in use
...maven-plugin. To change the port use --server.port parameter for example:
java -jar target/gs-serving-web-content-0.1.0.jar --server.port=8181
Update. Alternatively put server.port=8181 into application.properties (or application.yml).
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What is a fat JAR? [duplicate]
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The different names are just ways of packaging java apps.
Skinny – Contains ONLY the bits you literally type into your code editor, and NOTHING else.
Thin – Contains all of the above PLUS the app’s direct dependencies of your app (db drivers, utility libraries, et...
Using GZIP compression with Spring Boot/MVC/JavaConfig with RESTful
We use Spring Boot/MVC with annotation-based java-config for series of RESTful services and we want to selectively enable HTTP GZIP stream compression on some API responses.
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What is the ellipsis (…) for in this method signature?
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Those are Java varargs. They let you pass any number of objects of a specific type (in this case they are of type JID).
In your example, the following function calls would be valid:
MessageBuilder msgBuilder; //There should probably ...
Change / Add syntax highlighting for a language in Sublime 2/3
I want to change / add syntax highlighting for a language in Sublime 2/3.
5 Answers
5
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How do I implement basic “Long Polling”?
...hread per request. cometD is an popular one (which is available in several languages), and Tornado is a new framework made specifically for such tasks (it was built for FriendFeed's long-polling code)... but as a simple example, Apache is more than adequate! This script could easily be written in an...
Do I need elements in persistence.xml?
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The persistence.xml has a jar-file that you can use. From the Java EE 5 tutorial:
<persistence>
<persistence-unit name="OrderManagement">
<description>This unit manages orders and customers.
It does not rely on any vendor-specific features and...
What are the reasons why Map.get(Object key) is not (fully) generic
... the decision to not have a fully generic get method
in the interface of java.util.Map<K, V> .
11 Answers
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