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How do shift operators work in Java? [duplicate]
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Java defines shift to mask (wrap around) the count down to the 0-31 range, rather than saturate to 32 (if shift by 32 left only zeroes). (using 32bit types for example, obviously.) I assume this decision was made to match t...
How do you make a web application in Clojure? [closed]
... strange question to the huge majority of programmers that work daily with Java. I don't. I know Java-the-language, because I worked on Java projects, but not Java-the-world. I never made a web app from scratch in Java. If I have to do it with Python, Ruby, I know where to go (Django or Rails), but ...
Convert Iterable to Stream using Java 8 JDK
I have an interface which returns java.lang.Iterable<T> .
9 Answers
9
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Utility classes are evil? [closed]
...ity classes to group a number of methods together — an example being the java.util.Collections class which provides a number of utilities that can be used on any Java Collection. These aren't specific to one particular type of Collection, but instead implement algorithms that can be used on any Co...
Why is creating a Thread said to be expensive?
The Java tutorials say that creating a Thread is expensive. But why exactly is it expensive? What exactly is happening when a Java Thread is created that makes its creation expensive? I'm taking the statement as true, but I'm just interested in mechanics of Thread creation in JVM.
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What is
... type has to implement comparable of itself or its superclass. So consider java.util.Date. It implements Comparable<Date>. But what about java.sql.Date? It implements Comparable<java.util.Date> as well.
Without the super signature, SortedList would not be able accept the type of java.sq...
Shallow copy of a Map in Java
...uple of ways (maybe others as well) to create a shallow copy of a Map in Java:
3 Answers
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Difference between & and && in Java? [duplicate]
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JUnit 4 Test Suites
...rent ways:
right-click and run in Eclipse as Junit test
create a runable Java Application; Main class='org.junit.runner.JUnitCore' and Args='my.package.tests.AllTests'
run from the command line:
$ java -cp build/classes/:/usr/share/java/junit4.jar:/usr/share/java/hamcrest-core.jar org.junit.runne...
Understanding generators in Python
...erator.
Normal functions return a single value using return, just like in Java. In Python, however, there is an alternative, called yield. Using yield anywhere in a function makes it a generator. Observe this code:
>>> def myGen(n):
... yield n
... yield n + 1
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>>> g ...