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Lightweight Java Object cache API [closed]
I'm looking for a Java in-memory object caching API. Any recommendations? What solutions have you used in the past?
7 Answe...
How to generate serial version UID in Intellij
...ar settings)
File -> Settings -> Editor -> Inspections -> Java -> Serialization issues -> Serializable class without 'serialVersionUID' - set flag and click 'OK'.
(For Macs, Settings is under IntelliJ IDEA -> Preferences...)
Now, if your class implements Serializable, y...
Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
...hers already answered about that, so I won't elaborate.
1. When coding in Java or C#, you already use RAII...
MONSIEUR JOURDAIN: What! When I say, "Nicole, bring me my slippers,
and give me my nightcap," that's prose?
PHILOSOPHY MASTER: Yes, Sir.
MONSIEUR JOURDAIN: For more than for...
Avoid synchronized(this) in Java?
Whenever a question pops up on SO about Java synchronization, some people are very eager to point out that synchronized(this) should be avoided. Instead, they claim, a lock on a private reference is to be preferred.
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Using Application context everywhere?
...ntln("x:"+Y.xinstance+" y:"+X.yinstance);
}
}
Let's run the code:
$ javac A.java
$ java A
x:X@a63599 y:Y@9036e
x:null y:null
The second line shows that Y.xinstance and X.yinstance are null; they are null because the variables X.xinstance ans Y.yinstance were read when they were null.
Can ...
Can not deserialize instance of java.util.ArrayList out of START_OBJECT token
... please refer to our site mboot.herokuapp.com, we publish article related java - spring-boot
– Salah Atwa
Jun 21 at 22:08
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How do I make the method return type generic?
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I don't disagree about that, but we are dealing with Java and all of its design decisions/foibles. I see this question as just trying to learn what is possible in Java generics, not as an xyproblem (meta.stackexchange.com/questions/66377/what-is-the-xy-problem) that needs to be...
Assign variable in if condition statement, good practice or not? [closed]
I moved one years ago from classic OO languages such like Java to JavaScript. The following code is definitely not recommended (or even not correct) in Java:
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Java: how to convert HashMap to array
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@Alex "In older Java versions using pre-sized array was recommended (...) However since late updates of OpenJDK 6 this call was intrinsified, making the performance of the empty array version the same and sometimes even better, compared to t...
Difference between class and type
Being new to Java, I'm confused between the concepts of class and type .
For example, should the object "Hello World!" belong to the type String or class String ? Or maybe both?
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