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initializing a Guava ImmutableMap
... well, you may have multiple puts still, but they are now using fluent API, so no need to repeat myMap for each .put
– Kevin Welker
Feb 28 '12 at 22:25
21
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Java URL encoding of query string parameters
... in short URLEncoder is for encoding for form submission. It is not for escaping. Its not the exact same escaping that you would use to create URLs to be put in your web page but happens to be similar enough that people abuse it. The only time you should be using URLEncoder is if your writing a HTTP...
Dependency injection with Jersey 2.0
...'m not sure what EntityManager is, but judging by docs.oracle.com/javaee/6/api/javax/persistence/… it seems to be an interface. You can bind it using bind(EntityManagerImpl.class).to(EntityManager.class) (which will bind a class EntityManagerImpl implementing the interface EntityManager. If you ne...
BigDecimal setScale and round
... leftmost nonzero digit of the exact result. docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html
– Eddy
Sep 6 '16 at 7:06
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What order are the Junit @Before/@After called?
...void setUp() ) and @After ( public void tearDown() ) method to establish API and DB connections. What I've been doing is just overriding those two methods in each testcase and calling super.setUp() and super.tearDown() . However this can cause problems if someone forgets to call the super or pu...
Is there a destructor for Java?
...rces, use an explicit method call. This convention can be seen in existing APIs (e.g. Closeable, Graphics.dispose(), Widget.dispose()) and is usually called via try/finally.
Resource r = new Resource();
try {
//work
} finally {
r.dispose();
}
Attempts to use a disposed object should throw...
How to detect Windows 64-bit platform with .NET?
...and if you are running in a 32-bit process, you still have to call the Win API function IsWow64Process. If this returns true, you are running in a 32-bit process on 64-bit Windows.
Microsoft's Raymond Chen:
How to detect programmatically whether you are running on 64-bit Windows
My solution:
static ...
Polymorphism: Why use “List list = new ArrayList” instead of “ArrayList list = new ArrayList”? [dupl
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Changing the implementation doesn't change anything for the users of your API.
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How to Convert JSON object to Custom C# object?
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A good way to use JSON in C# is with JSON.NET
Quick Starts & API Documentation from JSON.NET - Official site help you work with it.
An example of how to use it:
public class User
{
public User(string json)
{
JObject jObject = JObject.Parse(json);
JToken jUser...
Java 8 stream reverse order
...sorted and distinct actually store an intermediate result. See the package API docs for some information about that.
– Lii
Sep 25 '14 at 9:08
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