All the generated webservice-stubs from our backend have an equals-method similar to this one: Can someone please explain to me the purpoise of __equalsCalc? I just don’t get it. It is not used somewhere else in the class. The way I see it, it is not null exactly during the calculation of the “equ…
How do I parse command line arguments in Java?
What is a good way of parsing command line arguments in Java? Answer Check these out: http://commons.apache.org/cli/ http://www.martiansoftware.com/jsap/ Or roll your own: http://docs.oracle.com/javase/7/docs/api/java/util/Scanner.html For instance, this is how you use commons-cli to parse 2 string arguments:…
Is there a general “back-end” library for Java reflection
I’m currently working with a specialized, interpreted, programming language implemented in Java. As a very small part of the language, I’d like to add the ability to make calls into Java. Before I dive into all of the nitty-gritty of reflection, I was wondering if anyone knew of a general library …
Best source code formatter for Javascript? [closed]
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Questions asking us to recommend or find a tool, library or favorite off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and …
Why can’t I use switch statement on a String?
Is this functionality going to be put into a later Java version? Can someone explain why I can’t do this, as in, the technical way Java’s switch statement works? Answer Switch statements with String cases have been implemented in Java SE 7, at least 16 years after they were first requested. A clea…
When to use LinkedList over ArrayList in Java?
I’ve always been one to simply use: I use the interface as the type name for portability, so that when I ask questions such as this, I can rework my code. When should LinkedList be used over ArrayList and vice-versa? Answer Summary ArrayList with ArrayDeque are preferable in many more use-cases than Lin…
Interfaces with static fields in java for sharing ‘constants’
I’m looking at some open source Java projects to get into Java and notice a lot of them have some sort of ‘constants’ interface. For instance, processing.org has an interface called PConstants.java, and most other core classes implement this interface. The interface is riddled with static me…
How do I set environment variables from Java?
How do I set environment variables from Java? I see that I can do this for subprocesses using ProcessBuilder. I have several subprocesses to start, though, so I’d rather modify the current process’s environment and let the subprocesses inherit it. There’s a System.getenv(String) for getting …
How do I read / convert an InputStream into a String in Java?
If you have a java.io.InputStream object, how should you process that object and produce a String? Suppose I have an InputStream that contains text data, and I want to convert it to a String, so for example I can write that to a log file. What is the easiest way to take the InputStream and convert it to a Str…
A range intersection algorithm better than O(n)?
Range intersection is a simple, but non-trivial problem. Its has been answered twice already: Find number range intersection Comparing date ranges The first solutions is O(n) and the second solution is for a database (which is less than O(n) of course). I have the same problem, but for a large n and I am not …