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What is the difference between up-casting and down-casting with respect to class variable
...use
Downcasting(or narrowing), and Downcasting is not directly possible in Java, explicitly we have to do.
Dog d = new Dog();
Animal a = (Animal) d; //Explicitly you have done upcasting. Actually no need, we can directly type cast like Animal a = d; compiler now treat Dog as Animal but still it i...
Backing beans (@ManagedBean) or CDI Beans (@Named)?
I've just started reading through Core JavaServer Faces, 3rd Ed. and they say this (emphasis mine):
5 Answers
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C# Set collection?
Does anyone know if there is a good equivalent to Java's Set collection in C#? I know that you can somewhat mimic a set using a Dictionary or a HashTable by populating but ignoring the values, but that's not a very elegant way.
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How to write multiple line property value using PropertiesConfiguration?
...slash + end-of-line. I just found it documented in:
http://docs.oracle.com/javase/6/docs/api/java/util/Properties.html
primes = 2,\
3,\
5,\
7,\
11
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How to get an enum which is created in attrs.xml in code
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There does not seem to be an automated way to get a Java enum from an attribute enum - in Java you can get the numeric value you specified - the string is for use in XML files (as you show).
You could do this in your view constructor:
TypedArray a = context.getTheme().obtain...
When to use os.name, sys.platform, or platform.system?
...system():
""" Returns the system/OS name, e.g. 'Linux', 'Windows' or 'Java'.
An empty string is returned if the value cannot be determined.
"""
return uname()[0]
def uname():
# Get some infos from the builtin os.uname API...
try:
system,node,release,version,ma...
Why is an array not assignable to Iterable?
with Java5 we can write:
5 Answers
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Would you, at present date, use JBoss or Glassfish (or another) as Java EE server for a new project?
If you started a new Java EE project today which is to be finished in about a year, which application server would you choose and why?
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What Process is using all of my disk IO
... 53124K 0K 98% java
358 0K 636K 0K 1% jbd2/dm-0-8
13893 0K 192K 72K ...
Asynctask vs Thread in android
...g-running or CPU-intensive tasks, there are basically two ways to do this: Java threads, and Android's native AsyncTask.
Neither one is necessarily better than the other, but knowing when to use each call is essential to leveraging the system's performance to your benefit.
Use AsyncTask for:
Sim...