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What is the difference between a JavaBean and a POJO?
...ertain conventions. Getter/setter naming, having a public default constructor, being serialisable etc. See JavaBeans Conventions for more details.
A POJO (plain-old-Java-object) isn't rigorously defined. It's a Java object that doesn't have a requirement to implement a particular interface or deriv...
WSDL vs REST Pros and Cons
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The two protocols have very different uses in the real world.
SOAP(using WSDL) is a heavy-weight XML standard that is centered around document passing. The advantage with this is that your requests and responses can be very well structured, and can even use a DTD. The downside ...
Android Log.v(), Log.d(), Log.i(), Log.w(), Log.e() - When to use each one?
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Let's go in reverse order:
Log.e: This is for when bad stuff happens. Use this tag in places like inside a catch statement. You know that an error has occurred and therefore you're logging an error.
Log.w: Use this when you suspect something s...
In a URL, should spaces be encoded using %20 or +? [duplicate]
In a URL, should I encode the spaces using %20 or + ? For example, in the following example, which one is correct?
6 Ans...
Pickle or json?
...ements (e.g. you are just going to use the data with Python) and a binary format is fine, go with cPickle which gives you really fast Python object serialization.
If you want interoperability or you want a text format to store your data, go with JSON (or some other appropriate format depending on y...
Difference in System. exit(0) , System.exit(-1), System.exit(1 ) in Java
...parameter of exit should qualify if the execution of the program went good or bad. It's a sort of heredity from older programming languages where it's useful to know if something went wrong and what went wrong.
Exit code is
0 when execution went fine;
1, -1, whatever != 0 when some error occurred...
What is N-Tier architecture?
... a few developer job postings recently that include a sentence that reads more or less like this: "Must have experience with N-Tier architecture", or "Must be able to develop N-Tier apps".
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'AND' vs '&&' as operator
I have a codebase where developers decided to use AND and OR instead of && and || .
10 Answers
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Why does JQuery have dollar signs everywhere?
I am working on a project with quite a lot of JQuery in it. The JQuery has a lot of $ signs everywhere, for example
7 Answ...
How to close tag properly?
Which one(s) of them is correct?
7 Answers
7
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