大约有 30,000 项符合查询结果（耗时：0.0473秒） [XML]
A 'for' loop to iterate over an enum in Java
I have an enum in Java for the cardinal & intermediate directions:
11 Answers
11
...
Generic type parameter naming convention for Java (with multiple chars)?
...
Oracle recommends the following in Java Tutorials > Generics > Generic Types:
Type Parameter Naming Conventions
By convention, type parameter names are single, uppercase letters. This stands in sharp contrast to the variable naming conventions that you ...
How do CDI and EJB compare? interact?
...anaged by EJB container.
Seems that CDI does understand what EJB is, so in Java EE 6 compliant server, in your servlet you can write both
@EJB EJBService ejbService;
and
@Inject EJBService ejbService;
that's what can make you confusing, but that's probably the only thing which is the bridge betwee...
What are the big improvements between guava and apache equivalent libraries?
...
First of, as javamonkey79 explained, while Google Guava and Apache Commons do share similar features, they also both have functionality that is absent from their counterpart. Thus, limiting yourself to only one library might be unwise.
T...
What's wrong with Java Date & Time API? [closed]
Very often I come across negative feedback on Java Date and other date-time-related classes. Being a .NET developer, I cannot fully (without having used them) understand, what's actually wrong with them.
...
Best way to compare dates in Android
...
FYI, the troublesome old date-time classes such as java.util.Date, java.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes. Most of the java.time functionality is back-ported to Java 6 & Java 7 in the ThreeTen-Backport projec...
converting double to integer in java
In Java, I want to convert a double to an integer, I know if you do this:
3 Answers
3
...
Can we write our own iterator in Java?
...
Sure. An iterator is just an implementation of the java.util.Iterator interface. If you're using an existing iterable object (say, a LinkedList) from java.util, you'll need to either subclass it and override its iterator function so that you return your own, or provide a mean...
What does JVM flag CMSClassUnloadingEnabled actually do?
I cannot for the life of me find a definition of what the Java VM flag CMSClassUnloadingEnabled actually does, other than some very fuzzy high-level definitions such as "gets rid of your PermGen problems" ( which it doesn't , btw).
...
Accessing members of items in a JSONArray with Java
I'm just getting started with using json with java. I'm not sure how to access string values within a JSONArray. For instance, my json looks like this:
...