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Java: convert List to a String
JavaScript has Array.join()
22 Answers
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Use of “instanceof” in Java [duplicate]
I learned that Java has the instanceof operator. Can you elaborate where it is used and what are its advantages?
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Why can't I declare static methods in an interface?
...tions: you don't know which implementing class is the correct definition.
Java could allow the latter; and in fact, starting in Java 8, it does!
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Split Java String by New Line
...gex, limit) with negative limit like text.split("\\r?\\n", -1). More info: Java String split removed empty values
– Pshemo
Jul 19 '16 at 13:08
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Intersection and union of ArrayLists in Java
... This post could use an update to demonstrate the benefits of the Java 8 Stream API.
– SME_Dev
Sep 2 '15 at 15:57
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Safely casting long to int in Java
What's the most idiomatic way in Java to verify that a cast from long to int does not lose any information?
10 Answers
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Pros and cons of Java rules engines [closed]
What are the pros and cons to adopting the Java rules engines JESS and Drools ? Are there any other players?
5 Answers
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What is the difference between ? and Object in Java generics?
I'm using Eclipse to help me clean up some code to use Java generics properly. Most of the time it's doing an excellent job of inferring types, but there are some cases where the inferred type has to be as generic as possible: Object. But Eclipse seems to be giving me an option to choose between a...
What is an uber jar?
... And so on.
(a) I probably shouldn't have to explain what a JAR is to a Java developer but I'll include it for completeness. It's a Java archive, basically a single file that typically contains a number of Java class files along with associated metadata and resources.
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Big-O summary for Java Collections Framework implementations? [closed]
I may be teaching a "Java crash-course" soon. While it is probably safe to assume that the audience members will know Big-O notation, it is probably not safe to assume that they will know what the order of the various operations on various collection implementations is.
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