Module java.management

Package javax.management.loading

package javax.management.loading

Provides the classes which implement advanced dynamic loading. See the chapter Advanced Dynamic Loading in the JMX Specification.

An MBean that is of a subclass of ClassLoader can be used as a class loader to create other MBeans via the method MBeanServer.createMBean(String, ObjectName, ObjectName, Object[], String[]), and to instantiate arbitrary objects via the method MBeanServer.instantiate(String, ObjectName, Object[], String[]). The MLet class is an example of such an MBean. It is a URLClassLoader, so the list of URLs to load classes from can be configured.

Additionally, an MLet can read a configuration file that specifies a set of MBeans to be registered in the same MBean Server as the MLet.

Every MBean Server has a class loader repository containing all MBeans registered in that MBean Server that are of a subclass of ClassLoader. The class loader repository is used by the forms of the createMBean and instantiate methods in the MBeanServer interface that do not have an explicit loader parameter. It is also used by the MLet class when it does not find a class in its own set of URLs.

If an MBean implements the interface PrivateClassLoader, then it is not added to the class loader repository. The class PrivateMLet is a subclass of MLet that implements PrivateClassLoader.

Since:
1.5
See Also:
  • Class
    Description
    ClassLoaderRepository
    Instances of this interface are used to keep the list of ClassLoaders registered in an MBean Server.
    DefaultLoaderRepository
    Deprecated.
    Use MBeanServer.getClassLoaderRepository() instead.
    MLet
    Deprecated, for removal: This API element is subject to removal in a future version.
    This API is part of Management Applets (m-lets), which is a legacy feature that allows loading of remote MBeans.
    MLetContent
    Deprecated, for removal: This API element is subject to removal in a future version.
    This API is part of Management Applets (m-lets), which is a legacy feature that allows loading of remote MBeans.
    MLetMBean
    Deprecated, for removal: This API element is subject to removal in a future version.
    This API is part of Management Applets (m-lets), which is a legacy feature that allows loading of remote MBeans.
    PrivateClassLoader
    Marker interface indicating that a ClassLoader should not be added to the ClassLoaderRepository.
    PrivateMLet
    Deprecated, for removal: This API element is subject to removal in a future version.
    This API is part of Management Applets (m-lets), which is a legacy feature that allows loading of remote MBeans.