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Why is it not possible to extend annotations in Java?
... given method or type may have two such annotations on it, meaning that an array would have to be returned instead of just a single object.
So I think the ultimate answer is that the use cases are esoteric and complicate more standard use cases making it not worth it.
...
Is there a difference between “==” and “is”?
...ng (but in most cases it should return a boolean!).
For example with NumPy arrays the
How do I turn a String into a InputStreamReader in java?
...
ByteArrayInputStream also does the trick:
InputStream is = new ByteArrayInputStream( myString.getBytes( charset ) );
Then convert to reader:
InputStreamReader reader = new InputStreamReader(is);
...
Find Java classes implementing an interface [duplicate]
...ursively descend
}
Then just make your annotation have an argument of an array of Class.
Then in your package-info.java for a particular package put the MyAno.
I'll add more details (code) if people are interested but most probably get the idea.
MetaInf Service Loader
To add to @erickson answer...
Generate Java class from JSON?
...e's an online tool that will take JSON, including nested objects or nested arrays of objects and generate a Java source with Jackson annotations.
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Simulating tremor (from e.g. Parkinson's Disease) with the mouse on a webpage?
...ent cursor location: http://jsfiddle.net/benmosher/0x4mc64v/4/
(The normal array is the result of calling rnorm(100) in my R console. Simplest way I could think of in JS to sample a normally-distributed random integer.)
shar...
What is the best way to iterate over a dictionary?
...trying to use a generic Dictionary in C# like you would use an associative array in another language:
foreach(var item in myDictionary)
{
foo(item.Key);
bar(item.Value);
}
Or, if you only need to iterate over the collection of keys, use
foreach(var item in myDictionary.Keys)
{
foo(item);
}...
Avoiding an ambiguous match exception
...ment: Unless you're unaware that new [] {} actually infers the type of the Array and IS equivalent to new Type[] in this case? In that case I'm sorry - I assumed that you comment on the style (both works) while potentially thinking the snippet is wrong (it isn't).
– Benjamin Po...
HTML in string resource?
... in /res/raw. (JSON is less picky)
Store the data records like this in an array object:
[
{
"Field1": "String data",
"Field2": 12345,
"Field3": "more Strings",
"Field4": true
},
{
"Field1": "String data",
"Field2": 12345,
"Field3"...
JPA: How to have one-to-many relation of the same Entity type
....setParent(parent);
daughter.setParent(parent);
parent.setChildren(Arrays.asList(son, daughter));
em.persist(parent);
em.persist(son);
em.persist(daughter);
em.getTransaction().commit();
}
In this case, all three entity instances must be persisted before transaction commi...