Serializable
public final class StaticClass extends Object implements Serializable
StandardOperation.NEW
operation. In Dynalink, Class
objects are not treated specially and act as ordinary Java objects; you can use e.g. GET:PROPERTY:superclass
as a property getter to invoke clazz.getSuperclass()
. On the other hand, you can not use Class
objects to access static members of a class, nor to create new instances of the class using NEW
. This is consistent with how Class
objects behave in Java: in Java, you write e.g. new BitSet()
instead of new BitSet.class()
. Similarly, you write System.out
and not System.class.out
. It is this aspect of using a class name as the constructor and a namespace for static members that StaticClass
embodies. Objects of this class are recognized by the BeansLinker
as being special, and operations on them will be linked against the represented class' static members. The "class"
synthetic property is additionally recognized and returns the Java Class
object, just as in Java System.class
evaluates to the Class
object for the System class. Conversely, Class
objects exposed through BeansLinker
expose the "static"
synthetic property which returns their StaticClass
object (there is no equivalent to this in Java).
In summary, instances of this class act as namespaces for static members and as constructors for classes, much the same way as specifying a class name in Java language does, except that in Java this is just a syntactic element, while in Dynalink they are expressed as actual objects.
StaticClass
objects representing Java array types will act as constructors taking a single int argument and create an array of the specified size.
If the class has several constructors, StandardOperation.NEW
on StaticClass
will try to select the most specific applicable constructor. You might want to expose a mechanism in your language for selecting a constructor with an explicit signature through BeansLinker.getConstructorMethod(Class, String)
.
Modifier and Type | Method | Description |
---|---|---|
static StaticClass |
forClass |
Retrieves the StaticClass instance for the specified class. |
Class |
getRepresentedClass() |
Returns the represented Java class. |
public static StaticClass forClass(Class<?> clazz)
StaticClass
instance for the specified class.clazz
- the class for which the static facet is requested.StaticClass
instance representing the specified class.public Class<?> getRepresentedClass()
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/jdk.dynalink/jdk/dynalink/beans/StaticClass.html