JDK14/Java14源码在线阅读
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java.management /
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classes /
javax /
management /
loading /
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<title>javax.management.loading package</title>
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<p>Provides the classes which implement advanced dynamic
loading. See the chapter <em>Advanced Dynamic Loading</em> in
the <a href="#spec">JMX Specification</a>.</p>
<p>An MBean that is of a subclass of {@link
java.lang.ClassLoader} can be used as a class loader to create
other MBeans via the method {@link
javax.management.MBeanServer#createMBean(String, ObjectName,
ObjectName, Object[], String[])}, and to instantiate arbitrary
objects via the method {@link
javax.management.MBeanServer#instantiate(String, ObjectName,
Object[], String[])}. The {@link
javax.management.loading.MLet MLet} class is an example of
such an MBean. It is a {@link java.net.URLClassLoader
URLClassLoader}, so the list of URLs to load classes from can
be configured.</p>
<p>Additionally, an <code>MLet</code> can read a configuration
file that specifies a set of MBeans to be registered in the same
MBean Server as the <code>MLet</code>.</p>
<p>Every MBean Server has a <em>class loader repository</em>
containing all MBeans registered in that MBean Server that
are of a subclass of {@link java.lang.ClassLoader}. The class
loader repository is used by the forms of the
<code>createMBean</code> and <code>instantiate</code> methods
in the {@link javax.management.MBeanServer MBeanServer}
interface that do not have an explicit loader parameter. It
is also used by the <code>MLet</code> class when it does not
find a class in its own set of URLs.</p>
<p>If an MBean implements the interface {@link
javax.management.loading.PrivateClassLoader PrivateClassLoader},
then it is not added to the class loader repository. The class
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