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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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java.sql.SQLException: Incorrect string value: '\xF0\x9F\x91\xBD\xF0\x9F…'
...re not in the basic multilingual plane. They cannot be even represented in java as one char, "????????".length() == 4. They are definitely not null characters and one will see squares if you are not using fonts that support them.
MySQL's utf8 only supports basic multilingual plane, and you need to ...
Using the “final” modifier whenever applicable in Java [closed]
In Java, there is a practice of declaring every variable (local or class), parameter final if they really are.
25 Answers
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LinkedBlockingQueue vs ConcurrentLinkedQueue
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This question deserves a better answer.
Java's ConcurrentLinkedQueue is based on the famous algorithm by Maged M. Michael and Michael L. Scott for non-blocking lock-free queues.
"Non-blocking" as a term here for a contended resource (our queue) means that regardle...
Any shortcut to initialize all array elements to zero?
...t to initialize an one-dimensional array to a different value, you can use java.util.Arrays.fill() (which will of course use a loop internally).
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FixedThreadPool vs CachedThreadPool: the lesser of two evils
...ive consequence to using one for long running threads. The comment in the java doc about CachedThreadPools being suitable for short tasks merely suggest that they are particularly appropriate for such cases, not that they cannot or should not be used for tasks involving long running tasks.
To elab...
What does the `#` operator mean in Scala?
...tion -- and they might even be equal. Class is a runtime representation of Java classes, and it's limited even in Java. For example, List<String> and List<Integer> have the same runtime Class. If Class is not rich enough to represent Java types, it's almost useless when representing Scal...
Are there best practices for (Java) package organization? [closed]
... I saw a question answered here regarding the fine-grained organization of java packages. For example, my.project.util , my.project.factory , my.project.service , etc.
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App Inventor 2 扩展 · App Inventor 2 中文网
... Inventor source code (located on Github) and programming the extension in Java. Extension components are packaged as aix files. Once you create an extension component, anyone can use it in their App Inventor projects. Extension component aix files can be housed anywhere on the Web. The aix f...