Beans JDK 1.6)

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publicstatic Object getInstanceOf (Object bean, Class<Object> targetType)

From a given bean, obtain an object representing a specified type view of that source object.

publicstatic Object instantiate (ClassLoader cls, String beanName) throws IOException ClassNotFoundException

Instantiate a JavaBean.

publicstatic Object instantiate (ClassLoader cls, String beanName, BeanContext beanContext) throws IOException ClassNotFoundException

Instantiate a JavaBean.

publicstatic Object instantiate (ClassLoader cls, String beanName, BeanContext beanContext, AppletInitializer initializer) throws IOException ClassNotFoundException

Instantiate a bean.

The bean is created based on a name relative to a class-loader. This name should be a dot-separated name such as "a.b.c".

In Beans 1.0 the given name can indicate either a serialized object or a class. Other mechanisms may be added in the future. In beans 1.0 we first try to treat the beanName as a serialized object name then as a class name.

When using the beanName as a serialized object name we convert the given beanName to a resource pathname and add a trailing ".ser" suffix. We then try to load a serialized object from that resource.

For example, given a beanName of "x.y", Beans.instantiate would first try to read a serialized object from the resource "x/y.ser" and if that failed it would try to load the class "x.y" and create an instance of that class.

If the bean is a subtype of java.applet.Applet, then it is given some special initialization. First, it is supplied with a default AppletStub and AppletContext. Second, if it was instantiated from a classname the applet's "init" method is called. (If the bean was deserialized this step is skipped.)

Note that for beans which are applets, it is the caller's responsiblity to call "start" on the applet. For correct behaviour, this should be done after the applet has been added into a visible AWT container.

Note that applets created via beans.instantiate run in a slightly different environment than applets running inside browsers. In particular, bean applets have no access to "parameters", so they may wish to provide property get/set methods to set parameter values. We advise bean-applet developers to test their bean-applets against both the JDK appletviewer (for a reference browser environment) and the BDK BeanBox (for a reference bean container).
Parameters:
- cls - the class-loader from which we should create the bean. If this is null, then the system class-loader is used.
- beanName - the name of the bean within the class-loader. For example "sun.beanbox.foobah"
- beanContext - The BeanContext in which to nest the new bean
- initializer - The AppletInitializer for the new bean
Throws:
- java.lang.ClassNotFoundException - if the class of a serialized object could not be found.
- java.io.IOException - if an I/O error occurs.

publicstatic boolean isDesignTime ()

Test if we are in design-mode.

publicstatic boolean isGuiAvailable ()

Determines whether beans can assume a GUI is available.

publicstatic boolean isInstanceOf (Object bean, Class<Object> targetType)

Check if a bean can be viewed as a given target type.

publicstatic void setDesignTime (boolean isDesignTime) throws SecurityException

Used to indicate whether of not we are running in an application builder environment.

publicstatic void setGuiAvailable (boolean isGuiAvailable) throws SecurityException

Used to indicate whether of not we are running in an environment where GUI interaction is available.