JavaClass
A
JavaScript reference to a Java class.
|
Core object
|
|
|
Implemented in
|
JavaScript 1.1, NES 2.0
|
Created by
A
reference to the class name used with the Packages object:
Packages.JavaClass
where
JavaClass is the fully-specified name of the object's Java
class. The LiveConnect java, sun, and
netscape
objects provide shortcuts for commonly used Java packages and
also create JavaClass objects.
Description
A
JavaClass
object is a reference to one of the classes in a Java package, such as
netscape.javascript.JSObject.
A JavaPackage
object is a reference to a Java package, such as netscape.javascript. In
JavaScript, the JavaPackage and
JavaClass
hierarchy reflect the Java package and class hierarchy.
You can
pass a JavaClass object to a
Java method which requires an argument of type java.lang.Class.
Backward compatibility
JavaScript 1.3 and earlier.
You must
create a wrapper around an instance of java.lang.Class before
you pass it as a parameter to a Java method—JavaClass objects are not
automatically converted to instances of java.lang.Class.
Property Summary
The
properties of a JavaClass object are the
static fields of the Java class.
Method Summary
The
methods of a JavaClass object are the
static methods of the Java class.
Examples
Example
1. In the following example, x is a JavaClass object
referring to java.awt.Font. Because
BOLD is a
static field in the Font class, it is also a
property of the JavaClass object.
x =
java.awt.Font
myFont = x("helv",x.BOLD,10) // creates a Font object
The
previous example omits the Packages keyword and uses
the java
synonym because the Font class is in the
java package.
Example
2. In the following example, the JavaClass object
java.lang.String is
passed as an argument to the newInstance method which
creates an array:
var
cars = java.lang.reflect.Array.newInstance(java.lang.String, 15)
See also
JavaArray,
JavaObject, JavaPackage, Packages
