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package javax.management;


// java import
import java.util.Set;
import java.io.ObjectInputStream;

// RI import
import javax.management.loading.ClassLoaderRepository;

This is the interface for MBean manipulation on the agent side. It contains the methods necessary for the creation, registration, and deletion of MBeans as well as the access methods for registered MBeans. This is the core component of the JMX infrastructure.

User code does not usually implement this interface. Instead, an object that implements this interface is obtained with one of the methods in the MBeanServerFactory class.

Every MBean which is added to the MBean server becomes manageable: its attributes and operations become remotely accessible through the connectors/adaptors connected to that MBean server. A Java object cannot be registered in the MBean server unless it is a JMX compliant MBean.

When an MBean is registered or unregistered in the MBean server a MBeanServerNotification Notification is emitted. To register an object as listener to MBeanServerNotifications you should call the MBean server method addNotificationListener with ObjectName the ObjectName of the MBeanServerDelegate. This ObjectName is:
JMImplementation:type=MBeanServerDelegate.

An object obtained from the createMBeanServer or newMBeanServer methods of the MBeanServerFactory class applies security checks to its methods, as follows.

First, if there is no security manager (System.getSecurityManager() is null), then an implementation of this interface is free not to make any checks.

Assuming that there is a security manager, or that the implementation chooses to make checks anyway, the checks are made as detailed below. In what follows, and unless otherwise specified, className is the string returned by MBeanInfo.getClassName() for the target MBean.

If a security check fails, the method throws SecurityException.

For methods that can throw InstanceNotFoundException, this exception is thrown for a non-existent MBean, regardless of permissions. This is because a non-existent MBean has no className.

Since:1.5
/** * <p>This is the interface for MBean manipulation on the agent * side. It contains the methods necessary for the creation, * registration, and deletion of MBeans as well as the access methods * for registered MBeans. This is the core component of the JMX * infrastructure.</p> * * <p>User code does not usually implement this interface. Instead, * an object that implements this interface is obtained with one of * the methods in the {@link javax.management.MBeanServerFactory} class.</p> * * <p>Every MBean which is added to the MBean server becomes * manageable: its attributes and operations become remotely * accessible through the connectors/adaptors connected to that MBean * server. A Java object cannot be registered in the MBean server * unless it is a JMX compliant MBean.</p> * * <p id="notif">When an MBean is registered or unregistered in the * MBean server a {@link javax.management.MBeanServerNotification * MBeanServerNotification} Notification is emitted. To register an * object as listener to MBeanServerNotifications you should call the * MBean server method {@link #addNotificationListener * addNotificationListener} with <CODE>ObjectName</CODE> the * <CODE>ObjectName</CODE> of the {@link * javax.management.MBeanServerDelegate MBeanServerDelegate}. This * <CODE>ObjectName</CODE> is: <BR> * <CODE>JMImplementation:type=MBeanServerDelegate</CODE>.</p> * * <p>An object obtained from the {@link * MBeanServerFactory#createMBeanServer(String) createMBeanServer} or * {@link MBeanServerFactory#newMBeanServer(String) newMBeanServer} * methods of the {@link MBeanServerFactory} class applies security * checks to its methods, as follows.</p> * * <p>First, if there is no security manager ({@link * System#getSecurityManager()} is null), then an implementation of * this interface is free not to make any checks.</p> * * <p>Assuming that there is a security manager, or that the * implementation chooses to make checks anyway, the checks are made * as detailed below. In what follows, and unless otherwise specified, * {@code className} is the * string returned by {@link MBeanInfo#getClassName()} for the target * MBean.</p> * * <p>If a security check fails, the method throws {@link * SecurityException}.</p> * * <p>For methods that can throw {@link InstanceNotFoundException}, * this exception is thrown for a non-existent MBean, regardless of * permissions. This is because a non-existent MBean has no * <code>className</code>.</p> * * <ul> * * <li><p>For the {@link #invoke invoke} method, the caller's * permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, operationName, name, "invoke")}.</p> * * <li><p>For the {@link #getAttribute getAttribute} method, the * caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, attribute, name, "getAttribute")}.</p> * * <li><p>For the {@link #getAttributes getAttributes} method, the * caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, name, "getAttribute")}. * Additionally, for each attribute <em>a</em> in the {@link * AttributeList}, if the caller's permissions do not imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, <em>a</em>, name, "getAttribute")}, the * MBean server will behave as if that attribute had not been in the * supplied list.</p> * * <li><p>For the {@link #setAttribute setAttribute} method, the * caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, attrName, name, "setAttribute")}, where * <code>attrName</code> is {@link Attribute#getName() * attribute.getName()}.</p> * * <li><p>For the {@link #setAttributes setAttributes} method, the * caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, name, "setAttribute")}. * Additionally, for each attribute <em>a</em> in the {@link * AttributeList}, if the caller's permissions do not imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, <em>a</em>, name, "setAttribute")}, the * MBean server will behave as if that attribute had not been in the * supplied list.</p> * * <li><p>For the <code>addNotificationListener</code> methods, * the caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, name, * "addNotificationListener")}.</p> * * <li><p>For the <code>removeNotificationListener</code> methods, * the caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, name, * "removeNotificationListener")}.</p> * * <li><p>For the {@link #getMBeanInfo getMBeanInfo} method, the * caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, name, "getMBeanInfo")}.</p> * * <li><p>For the {@link #getObjectInstance getObjectInstance} method, * the caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, name, "getObjectInstance")}.</p> * * <li><p>For the {@link #isInstanceOf isInstanceOf} method, the * caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, name, "isInstanceOf")}.</p> * * <li><p>For the {@link #queryMBeans queryMBeans} method, the * caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(null, null, null, "queryMBeans")}. * Additionally, for each MBean <em>n</em> that matches <code>name</code>, * if the caller's permissions do not imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, <em>n</em>, "queryMBeans")}, the * MBean server will behave as if that MBean did not exist.</p> * * <p>Certain query elements perform operations on the MBean server. * If the caller does not have the required permissions for a given * MBean, that MBean will not be included in the result of the query. * The standard query elements that are affected are {@link * Query#attr(String)}, {@link Query#attr(String,String)}, and {@link * Query#classattr()}.</p> * * <li><p>For the {@link #queryNames queryNames} method, the checks * are the same as for <code>queryMBeans</code> except that * <code>"queryNames"</code> is used instead of * <code>"queryMBeans"</code> in the <code>MBeanPermission</code> * objects. Note that a <code>"queryMBeans"</code> permission implies * the corresponding <code>"queryNames"</code> permission.</p> * * <li><p>For the {@link #getDomains getDomains} method, the caller's * permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(null, null, null, "getDomains")}. Additionally, * for each domain <var>d</var> in the returned array, if the caller's * permissions do not imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(null, null, new ObjectName("<var>d</var>:x=x"), * "getDomains")}, the domain is eliminated from the array. Here, * <code>x=x</code> is any <var>key=value</var> pair, needed to * satisfy ObjectName's constructor but not otherwise relevant.</p> * * <li><p>For the {@link #getClassLoader getClassLoader} method, the * caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, loaderName, * "getClassLoader")}.</p> * * <li><p>For the {@link #getClassLoaderFor getClassLoaderFor} method, * the caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, mbeanName, * "getClassLoaderFor")}.</p> * * <li><p>For the {@link #getClassLoaderRepository * getClassLoaderRepository} method, the caller's permissions must * imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(null, null, null, "getClassLoaderRepository")}.</p> * * <li><p>For the deprecated <code>deserialize</code> methods, the * required permissions are the same as for the methods that replace * them.</p> * * <li><p>For the <code>instantiate</code> methods, the caller's * permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, null, "instantiate")}, * where {@code className} is the name of the class which is to * be instantiated.</p> * * <li><p>For the {@link #registerMBean registerMBean} method, the * caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, name, "registerMBean")}. * * <p>If the <code>MBeanPermission</code> check succeeds, the MBean's * class is validated by checking that its {@link * java.security.ProtectionDomain ProtectionDomain} implies {@link * MBeanTrustPermission#MBeanTrustPermission(String) * MBeanTrustPermission("register")}.</p> * * <p>Finally, if the <code>name</code> argument is null, another * <code>MBeanPermission</code> check is made using the * <code>ObjectName</code> returned by {@link * MBeanRegistration#preRegister MBeanRegistration.preRegister}.</p> * * <li><p>For the <code>createMBean</code> methods, the caller's * permissions must imply the permissions needed by the equivalent * <code>instantiate</code> followed by * <code>registerMBean</code>.</p> * * <li><p>For the {@link #unregisterMBean unregisterMBean} method, * the caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(className, null, name, "unregisterMBean")}.</p> * * </ul> * * @since 1.5 */
/* DELETED: * * <li><p>For the {@link #isRegistered isRegistered} method, the * caller's permissions must imply {@link * MBeanPermission#MBeanPermission(String,String,ObjectName,String) * MBeanPermission(null, null, name, "isRegistered")}.</p> */ public interface MBeanServer extends MBeanServerConnection {
{@inheritDoc}

If this method successfully creates an MBean, a notification is sent as described above.

Throws:
/** * {@inheritDoc} * <p>If this method successfully creates an MBean, a notification * is sent as described <a href="#notif">above</a>.</p> * * @throws RuntimeOperationsException {@inheritDoc} * @throws RuntimeMBeanException {@inheritDoc} * @throws RuntimeErrorException {@inheritDoc} */
public ObjectInstance createMBean(String className, ObjectName name) throws ReflectionException, InstanceAlreadyExistsException, MBeanRegistrationException, MBeanException, NotCompliantMBeanException;
{@inheritDoc}

If this method successfully creates an MBean, a notification is sent as described above.

Throws:
/** * {@inheritDoc} * <p>If this method successfully creates an MBean, a notification * is sent as described <a href="#notif">above</a>.</p> * * @throws RuntimeOperationsException {@inheritDoc} * @throws RuntimeMBeanException {@inheritDoc} * @throws RuntimeErrorException {@inheritDoc} */
public ObjectInstance createMBean(String className, ObjectName name, ObjectName loaderName) throws ReflectionException, InstanceAlreadyExistsException, MBeanRegistrationException, MBeanException, NotCompliantMBeanException, InstanceNotFoundException;
{@inheritDoc}

If this method successfully creates an MBean, a notification is sent as described above.

Throws:
/** * {@inheritDoc} * <p>If this method successfully creates an MBean, a notification * is sent as described <a href="#notif">above</a>.</p> * * @throws RuntimeOperationsException {@inheritDoc} * @throws RuntimeMBeanException {@inheritDoc} * @throws RuntimeErrorException {@inheritDoc} */
public ObjectInstance createMBean(String className, ObjectName name, Object params[], String signature[]) throws ReflectionException, InstanceAlreadyExistsException, MBeanRegistrationException, MBeanException, NotCompliantMBeanException;
{@inheritDoc}

If this method successfully creates an MBean, a notification is sent as described above.

Throws:
/** * {@inheritDoc} * <p>If this method successfully creates an MBean, a notification * is sent as described <a href="#notif">above</a>.</p> * * @throws RuntimeOperationsException {@inheritDoc} * @throws RuntimeMBeanException {@inheritDoc} * @throws RuntimeErrorException {@inheritDoc} */
public ObjectInstance createMBean(String className, ObjectName name, ObjectName loaderName, Object params[], String signature[]) throws ReflectionException, InstanceAlreadyExistsException, MBeanRegistrationException, MBeanException, NotCompliantMBeanException, InstanceNotFoundException;

Registers a pre-existing object as an MBean with the MBean server. If the object name given is null, the MBean must provide its own name by implementing the MBeanRegistration interface and returning the name from the preRegister method.

If this method successfully registers an MBean, a notification is sent as described above.

Params:
  • object – The MBean to be registered as an MBean.
  • name – The object name of the MBean. May be null.
Throws:
  • InstanceAlreadyExistsException – The MBean is already under the control of the MBean server.
  • MBeanRegistrationException – The preRegister (MBeanRegistration interface) method of the MBean has thrown an exception. The MBean will not be registered.
  • RuntimeMBeanException – If the postRegister (MBeanRegistration interface) method of the MBean throws a RuntimeException, the registerMBean method will throw a RuntimeMBeanException, although the MBean registration succeeded. In such a case, the MBean will be actually registered even though the registerMBean method threw an exception. Note that RuntimeMBeanException can also be thrown by preRegister, in which case the MBean will not be registered.
  • RuntimeErrorException – If the postRegister (MBeanRegistration interface) method of the MBean throws an Error, the registerMBean method will throw a RuntimeErrorException, although the MBean registration succeeded. In such a case, the MBean will be actually registered even though the registerMBean method threw an exception. Note that RuntimeErrorException can also be thrown by preRegister, in which case the MBean will not be registered.
  • NotCompliantMBeanException – This object is not a JMX compliant MBean
  • RuntimeOperationsException – Wraps a java.lang.IllegalArgumentException: The object passed in parameter is null or no object name is specified.
See Also:
Returns:An ObjectInstance, containing the ObjectName and the Java class name of the newly registered MBean. If the contained ObjectName is n, the contained Java class name is getMBeanInfo(n).getClassName().
/** * <p>Registers a pre-existing object as an MBean with the MBean * server. If the object name given is null, the MBean must * provide its own name by implementing the {@link * javax.management.MBeanRegistration MBeanRegistration} interface * and returning the name from the {@link * MBeanRegistration#preRegister preRegister} method. * * <p>If this method successfully registers an MBean, a notification * is sent as described <a href="#notif">above</a>.</p> * * @param object The MBean to be registered as an MBean. * @param name The object name of the MBean. May be null. * * @return An <CODE>ObjectInstance</CODE>, containing the * <CODE>ObjectName</CODE> and the Java class name of the newly * registered MBean. If the contained <code>ObjectName</code> * is <code>n</code>, the contained Java class name is * <code>{@link #getMBeanInfo getMBeanInfo(n)}.getClassName()</code>. * * @exception InstanceAlreadyExistsException The MBean is already * under the control of the MBean server. * @exception MBeanRegistrationException The * <CODE>preRegister</CODE> (<CODE>MBeanRegistration</CODE> * interface) method of the MBean has thrown an exception. The * MBean will not be registered. * @exception RuntimeMBeanException If the <CODE>postRegister</CODE> * (<CODE>MBeanRegistration</CODE> interface) method of the MBean throws a * <CODE>RuntimeException</CODE>, the <CODE>registerMBean</CODE> method will * throw a <CODE>RuntimeMBeanException</CODE>, although the MBean * registration succeeded. In such a case, the MBean will be actually * registered even though the <CODE>registerMBean</CODE> method * threw an exception. Note that <CODE>RuntimeMBeanException</CODE> can * also be thrown by <CODE>preRegister</CODE>, in which case the MBean * will not be registered. * @exception RuntimeErrorException If the <CODE>postRegister</CODE> * (<CODE>MBeanRegistration</CODE> interface) method of the MBean throws an * <CODE>Error</CODE>, the <CODE>registerMBean</CODE> method will * throw a <CODE>RuntimeErrorException</CODE>, although the MBean * registration succeeded. In such a case, the MBean will be actually * registered even though the <CODE>registerMBean</CODE> method * threw an exception. Note that <CODE>RuntimeErrorException</CODE> can * also be thrown by <CODE>preRegister</CODE>, in which case the MBean * will not be registered. * @exception NotCompliantMBeanException This object is not a JMX * compliant MBean * @exception RuntimeOperationsException Wraps a * <CODE>java.lang.IllegalArgumentException</CODE>: The object * passed in parameter is null or no object name is specified. * @see javax.management.MBeanRegistration */
public ObjectInstance registerMBean(Object object, ObjectName name) throws InstanceAlreadyExistsException, MBeanRegistrationException, NotCompliantMBeanException;
{@inheritDoc}

If this method successfully unregisters an MBean, a notification is sent as described above.

Throws:
/** * {@inheritDoc} * * <p>If this method successfully unregisters an MBean, a notification * is sent as described <a href="#notif">above</a>.</p> * * @throws RuntimeOperationsException {@inheritDoc} * @throws RuntimeMBeanException {@inheritDoc} * @throws RuntimeErrorException {@inheritDoc} */
public void unregisterMBean(ObjectName name) throws InstanceNotFoundException, MBeanRegistrationException; // doc comment inherited from MBeanServerConnection public ObjectInstance getObjectInstance(ObjectName name) throws InstanceNotFoundException;
{@inheritDoc}
Throws:
/** * {@inheritDoc} * @throws RuntimeOperationsException {@inheritDoc} */
public Set<ObjectInstance> queryMBeans(ObjectName name, QueryExp query);
{@inheritDoc}
Throws:
/** * {@inheritDoc} * @throws RuntimeOperationsException {@inheritDoc} */
public Set<ObjectName> queryNames(ObjectName name, QueryExp query); // doc comment inherited from MBeanServerConnection
Throws:
  • RuntimeOperationsException – {@inheritDoc}
/** * @throws RuntimeOperationsException {@inheritDoc} */
public boolean isRegistered(ObjectName name);
Returns the number of MBeans registered in the MBean server.
Returns:the number of registered MBeans, wrapped in an Integer. If the caller's permissions are restricted, this number may be greater than the number of MBeans the caller can access.
/** * Returns the number of MBeans registered in the MBean server. * * @return the number of registered MBeans, wrapped in an Integer. * If the caller's permissions are restricted, this number may * be greater than the number of MBeans the caller can access. */
public Integer getMBeanCount(); // doc comment inherited from MBeanServerConnection
Throws:
  • RuntimeOperationsException – {@inheritDoc}
/** * @throws RuntimeOperationsException {@inheritDoc} */
public Object getAttribute(ObjectName name, String attribute) throws MBeanException, AttributeNotFoundException, InstanceNotFoundException, ReflectionException; // doc comment inherited from MBeanServerConnection
Throws:
  • RuntimeOperationsException – {@inheritDoc}
/** * @throws RuntimeOperationsException {@inheritDoc} */
public AttributeList getAttributes(ObjectName name, String[] attributes) throws InstanceNotFoundException, ReflectionException; // doc comment inherited from MBeanServerConnection
Throws:
  • RuntimeOperationsException – {@inheritDoc}
/** * @throws RuntimeOperationsException {@inheritDoc} */
public void setAttribute(ObjectName name, Attribute attribute) throws InstanceNotFoundException, AttributeNotFoundException, InvalidAttributeValueException, MBeanException, ReflectionException; // doc comment inherited from MBeanServerConnection
Throws:
  • RuntimeOperationsException – {@inheritDoc}
/** * @throws RuntimeOperationsException {@inheritDoc} */
public AttributeList setAttributes(ObjectName name, AttributeList attributes) throws InstanceNotFoundException, ReflectionException; // doc comment inherited from MBeanServerConnection public Object invoke(ObjectName name, String operationName, Object params[], String signature[]) throws InstanceNotFoundException, MBeanException, ReflectionException; // doc comment inherited from MBeanServerConnection public String getDefaultDomain(); // doc comment inherited from MBeanServerConnection public String[] getDomains(); // doc comment inherited from MBeanServerConnection, plus:
{@inheritDoc} If the source of the notification is a reference to an MBean object, the MBean server will replace it by that MBean's ObjectName. Otherwise the source is unchanged.
/** * {@inheritDoc} * If the source of the notification * is a reference to an MBean object, the MBean server will replace it * by that MBean's ObjectName. Otherwise the source is unchanged. */
public void addNotificationListener(ObjectName name, NotificationListener listener, NotificationFilter filter, Object handback) throws InstanceNotFoundException;
{@inheritDoc}
Throws:
/** * {@inheritDoc} * @throws RuntimeOperationsException {@inheritDoc} */
public void addNotificationListener(ObjectName name, ObjectName listener, NotificationFilter filter, Object handback) throws InstanceNotFoundException; // doc comment inherited from MBeanServerConnection public void removeNotificationListener(ObjectName name, ObjectName listener) throws InstanceNotFoundException, ListenerNotFoundException; // doc comment inherited from MBeanServerConnection public void removeNotificationListener(ObjectName name, ObjectName listener, NotificationFilter filter, Object handback) throws InstanceNotFoundException, ListenerNotFoundException; // doc comment inherited from MBeanServerConnection public void removeNotificationListener(ObjectName name, NotificationListener listener) throws InstanceNotFoundException, ListenerNotFoundException; // doc comment inherited from MBeanServerConnection public void removeNotificationListener(ObjectName name, NotificationListener listener, NotificationFilter filter, Object handback) throws InstanceNotFoundException, ListenerNotFoundException; // doc comment inherited from MBeanServerConnection public MBeanInfo getMBeanInfo(ObjectName name) throws InstanceNotFoundException, IntrospectionException, ReflectionException; // doc comment inherited from MBeanServerConnection public boolean isInstanceOf(ObjectName name, String className) throws InstanceNotFoundException;

Instantiates an object using the list of all class loaders registered in the MBean server's Class Loader Repository. The object's class should have a public constructor. This method returns a reference to the newly created object. The newly created object is not registered in the MBean server.

This method is equivalent to instantiate(className, (Object[]) null, (String[]) null).

Params:
  • className – The class name of the object to be instantiated.
Throws:
  • ReflectionException – Wraps a java.lang.ClassNotFoundException or the java.lang.Exception that occurred when trying to invoke the object's constructor.
  • MBeanException – The constructor of the object has thrown an exception
  • RuntimeOperationsException – Wraps a java.lang.IllegalArgumentException: The className passed in parameter is null.
Returns:The newly instantiated object.
/** * <p>Instantiates an object using the list of all class loaders * registered in the MBean server's {@link * javax.management.loading.ClassLoaderRepository Class Loader * Repository}. The object's class should have a public * constructor. This method returns a reference to the newly * created object. The newly created object is not registered in * the MBean server.</p> * * <p>This method is equivalent to {@link * #instantiate(String,Object[],String[]) * instantiate(className, (Object[]) null, (String[]) null)}.</p> * * @param className The class name of the object to be instantiated. * * @return The newly instantiated object. * * @exception ReflectionException Wraps a * <CODE>java.lang.ClassNotFoundException</CODE> or the * <CODE>java.lang.Exception</CODE> that occurred when trying to * invoke the object's constructor. * @exception MBeanException The constructor of the object has * thrown an exception * @exception RuntimeOperationsException Wraps a * <CODE>java.lang.IllegalArgumentException</CODE>: The className * passed in parameter is null. */
public Object instantiate(String className) throws ReflectionException, MBeanException;

Instantiates an object using the class Loader specified by its ObjectName. If the loader name is null, the ClassLoader that loaded the MBean Server will be used. The object's class should have a public constructor. This method returns a reference to the newly created object. The newly created object is not registered in the MBean server.

This method is equivalent to instantiate(className, loaderName, (Object[]) null, (String[]) null).

Params:
  • className – The class name of the MBean to be instantiated.
  • loaderName – The object name of the class loader to be used.
Throws:
  • ReflectionException – Wraps a java.lang.ClassNotFoundException or the java.lang.Exception that occurred when trying to invoke the object's constructor.
  • MBeanException – The constructor of the object has thrown an exception.
  • InstanceNotFoundException – The specified class loader is not registered in the MBeanServer.
  • RuntimeOperationsException – Wraps a java.lang.IllegalArgumentException: The className passed in parameter is null.
Returns:The newly instantiated object.
/** * <p>Instantiates an object using the class Loader specified by its * <CODE>ObjectName</CODE>. If the loader name is null, the * ClassLoader that loaded the MBean Server will be used. The * object's class should have a public constructor. This method * returns a reference to the newly created object. The newly * created object is not registered in the MBean server.</p> * * <p>This method is equivalent to {@link * #instantiate(String,ObjectName,Object[],String[]) * instantiate(className, loaderName, (Object[]) null, (String[]) * null)}.</p> * * @param className The class name of the MBean to be instantiated. * @param loaderName The object name of the class loader to be used. * * @return The newly instantiated object. * * @exception ReflectionException Wraps a * <CODE>java.lang.ClassNotFoundException</CODE> or the * <CODE>java.lang.Exception</CODE> that occurred when trying to * invoke the object's constructor. * @exception MBeanException The constructor of the object has * thrown an exception. * @exception InstanceNotFoundException The specified class loader * is not registered in the MBeanServer. * @exception RuntimeOperationsException Wraps a * <CODE>java.lang.IllegalArgumentException</CODE>: The className * passed in parameter is null. */
public Object instantiate(String className, ObjectName loaderName) throws ReflectionException, MBeanException, InstanceNotFoundException;

Instantiates an object using the list of all class loaders registered in the MBean server Class Loader Repository. The object's class should have a public constructor. The call returns a reference to the newly created object. The newly created object is not registered in the MBean server.

Params:
  • className – The class name of the object to be instantiated.
  • params – An array containing the parameters of the constructor to be invoked.
  • signature – An array containing the signature of the constructor to be invoked.
Throws:
  • ReflectionException – Wraps a java.lang.ClassNotFoundException or the java.lang.Exception that occurred when trying to invoke the object's constructor.
  • MBeanException – The constructor of the object has thrown an exception
  • RuntimeOperationsException – Wraps a java.lang.IllegalArgumentException: The className passed in parameter is null.
Returns:The newly instantiated object.
/** * <p>Instantiates an object using the list of all class loaders * registered in the MBean server {@link * javax.management.loading.ClassLoaderRepository Class Loader * Repository}. The object's class should have a public * constructor. The call returns a reference to the newly created * object. The newly created object is not registered in the * MBean server.</p> * * @param className The class name of the object to be instantiated. * @param params An array containing the parameters of the * constructor to be invoked. * @param signature An array containing the signature of the * constructor to be invoked. * * @return The newly instantiated object. * * @exception ReflectionException Wraps a * <CODE>java.lang.ClassNotFoundException</CODE> or the * <CODE>java.lang.Exception</CODE> that occurred when trying to * invoke the object's constructor. * @exception MBeanException The constructor of the object has * thrown an exception * @exception RuntimeOperationsException Wraps a * <CODE>java.lang.IllegalArgumentException</CODE>: The className * passed in parameter is null. */
public Object instantiate(String className, Object params[], String signature[]) throws ReflectionException, MBeanException;

Instantiates an object. The class loader to be used is identified by its object name. If the object name of the loader is null, the ClassLoader that loaded the MBean server will be used. The object's class should have a public constructor. The call returns a reference to the newly created object. The newly created object is not registered in the MBean server.

Params:
  • className – The class name of the object to be instantiated.
  • params – An array containing the parameters of the constructor to be invoked.
  • signature – An array containing the signature of the constructor to be invoked.
  • loaderName – The object name of the class loader to be used.
Throws:
  • ReflectionException – Wraps a java.lang.ClassNotFoundException or the java.lang.Exception that occurred when trying to invoke the object's constructor.
  • MBeanException – The constructor of the object has thrown an exception
  • InstanceNotFoundException – The specified class loader is not registered in the MBean server.
  • RuntimeOperationsException – Wraps a java.lang.IllegalArgumentException: The className passed in parameter is null.
Returns:The newly instantiated object.
/** * <p>Instantiates an object. The class loader to be used is * identified by its object name. If the object name of the loader * is null, the ClassLoader that loaded the MBean server will be * used. The object's class should have a public constructor. * The call returns a reference to the newly created object. The * newly created object is not registered in the MBean server.</p> * * @param className The class name of the object to be instantiated. * @param params An array containing the parameters of the * constructor to be invoked. * @param signature An array containing the signature of the * constructor to be invoked. * @param loaderName The object name of the class loader to be used. * * @return The newly instantiated object. * * @exception ReflectionException Wraps a <CODE>java.lang.ClassNotFoundException</CODE> or the <CODE>java.lang.Exception</CODE> that * occurred when trying to invoke the object's constructor. * @exception MBeanException The constructor of the object has * thrown an exception * @exception InstanceNotFoundException The specified class loader * is not registered in the MBean server. * @exception RuntimeOperationsException Wraps a * <CODE>java.lang.IllegalArgumentException</CODE>: The className * passed in parameter is null. */
public Object instantiate(String className, ObjectName loaderName, Object params[], String signature[]) throws ReflectionException, MBeanException, InstanceNotFoundException;

De-serializes a byte array in the context of the class loader of an MBean.

Params:
  • name – The name of the MBean whose class loader should be used for the de-serialization.
  • data – The byte array to be de-sererialized.
Throws:
Implementation Requirements:This method throws UnsupportedOperationException by default.
Returns:The de-serialized object stream.
Deprecated:Use getClassLoaderFor to obtain the appropriate class loader for deserialization.
/** * <p>De-serializes a byte array in the context of the class loader * of an MBean.</p> * * @param name The name of the MBean whose class loader should be * used for the de-serialization. * @param data The byte array to be de-sererialized. * * @implSpec This method throws {@link UnsupportedOperationException} by default. * * @return The de-serialized object stream. * * @exception InstanceNotFoundException The MBean specified is not * found. * @exception OperationsException Any of the usual Input/Output * related exceptions. * * @deprecated Use {@link #getClassLoaderFor getClassLoaderFor} to * obtain the appropriate class loader for deserialization. */
@Deprecated(since="1.5") default public ObjectInputStream deserialize(ObjectName name, byte[] data) throws InstanceNotFoundException, OperationsException { throw new UnsupportedOperationException("Not supported."); }

De-serializes a byte array in the context of a given MBean class loader. The class loader is found by loading the class className through the Class Loader Repository. The resultant class's class loader is the one to use.

Params:
  • className – The name of the class whose class loader should be used for the de-serialization.
  • data – The byte array to be de-sererialized.
Throws:
Implementation Requirements:This method throws UnsupportedOperationException by default.
Returns: The de-serialized object stream.
Deprecated:Use getClassLoaderRepository to obtain the class loader repository and use it to deserialize.
/** * <p>De-serializes a byte array in the context of a given MBean * class loader. The class loader is found by loading the class * <code>className</code> through the {@link * javax.management.loading.ClassLoaderRepository Class Loader * Repository}. The resultant class's class loader is the one to * use. * * @param className The name of the class whose class loader should be * used for the de-serialization. * @param data The byte array to be de-sererialized. * * @implSpec This method throws {@link UnsupportedOperationException} by default. * * @return The de-serialized object stream. * * @exception OperationsException Any of the usual Input/Output * related exceptions. * @exception ReflectionException The specified class could not be * loaded by the class loader repository * * @deprecated Use {@link #getClassLoaderRepository} to obtain the * class loader repository and use it to deserialize. */
@Deprecated(since="1.5") default public ObjectInputStream deserialize(String className, byte[] data) throws OperationsException, ReflectionException { throw new UnsupportedOperationException("Not supported."); }

De-serializes a byte array in the context of a given MBean class loader. The class loader is the one that loaded the class with name "className". The name of the class loader to be used for loading the specified class is specified. If null, the MBean Server's class loader will be used.

Params:
  • className – The name of the class whose class loader should be used for the de-serialization.
  • data – The byte array to be de-sererialized.
  • loaderName – The name of the class loader to be used for loading the specified class. If null, the MBean Server's class loader will be used.
Throws:
Implementation Requirements:This method throws UnsupportedOperationException by default.
Returns: The de-serialized object stream.
Deprecated:Use getClassLoader to obtain the class loader for deserialization.
/** * <p>De-serializes a byte array in the context of a given MBean * class loader. The class loader is the one that loaded the * class with name "className". The name of the class loader to * be used for loading the specified class is specified. If null, * the MBean Server's class loader will be used.</p> * * @param className The name of the class whose class loader should be * used for the de-serialization. * @param data The byte array to be de-sererialized. * @param loaderName The name of the class loader to be used for * loading the specified class. If null, the MBean Server's class * loader will be used. * * @implSpec This method throws {@link UnsupportedOperationException} by default. * * @return The de-serialized object stream. * * @exception InstanceNotFoundException The specified class loader * MBean is not found. * @exception OperationsException Any of the usual Input/Output * related exceptions. * @exception ReflectionException The specified class could not be * loaded by the specified class loader. * * @deprecated Use {@link #getClassLoader getClassLoader} to obtain * the class loader for deserialization. */
@Deprecated(since="1.5") default public ObjectInputStream deserialize(String className, ObjectName loaderName, byte[] data) throws InstanceNotFoundException, OperationsException, ReflectionException { throw new UnsupportedOperationException("Not supported."); }

Return the ClassLoader that was used for loading the class of the named MBean.

Params:
  • mbeanName – The ObjectName of the MBean.
Throws:
Returns:The ClassLoader used for that MBean. If l is the MBean's actual ClassLoader, and r is the returned value, then either: What this means is that the ClassLoader may be wrapped in another ClassLoader for security or other reasons.
/** * <p>Return the {@link java.lang.ClassLoader} that was used for * loading the class of the named MBean.</p> * * @param mbeanName The ObjectName of the MBean. * * @return The ClassLoader used for that MBean. If <var>l</var> * is the MBean's actual ClassLoader, and <var>r</var> is the * returned value, then either: * * <ul> * <li><var>r</var> is identical to <var>l</var>; or * <li>the result of <var>r</var>{@link * ClassLoader#loadClass(String) .loadClass(<var>s</var>)} is the * same as <var>l</var>{@link ClassLoader#loadClass(String) * .loadClass(<var>s</var>)} for any string <var>s</var>. * </ul> * * What this means is that the ClassLoader may be wrapped in * another ClassLoader for security or other reasons. * * @exception InstanceNotFoundException if the named MBean is not found. * */
public ClassLoader getClassLoaderFor(ObjectName mbeanName) throws InstanceNotFoundException;

Return the named ClassLoader.

Params:
  • loaderName – The ObjectName of the ClassLoader. May be null, in which case the MBean server's own ClassLoader is returned.
Throws:
Returns:The named ClassLoader. If l is the actual ClassLoader with that name, and r is the returned value, then either: What this means is that the ClassLoader may be wrapped in another ClassLoader for security or other reasons.
/** * <p>Return the named {@link java.lang.ClassLoader}.</p> * * @param loaderName The ObjectName of the ClassLoader. May be * null, in which case the MBean server's own ClassLoader is * returned. * * @return The named ClassLoader. If <var>l</var> is the actual * ClassLoader with that name, and <var>r</var> is the returned * value, then either: * * <ul> * <li><var>r</var> is identical to <var>l</var>; or * <li>the result of <var>r</var>{@link * ClassLoader#loadClass(String) .loadClass(<var>s</var>)} is the * same as <var>l</var>{@link ClassLoader#loadClass(String) * .loadClass(<var>s</var>)} for any string <var>s</var>. * </ul> * * What this means is that the ClassLoader may be wrapped in * another ClassLoader for security or other reasons. * * @exception InstanceNotFoundException if the named ClassLoader is * not found. * */
public ClassLoader getClassLoader(ObjectName loaderName) throws InstanceNotFoundException;

Return the ClassLoaderRepository for this MBeanServer.

Returns:The ClassLoaderRepository for this MBeanServer.
/** * <p>Return the ClassLoaderRepository for this MBeanServer. * @return The ClassLoaderRepository for this MBeanServer. * */
public ClassLoaderRepository getClassLoaderRepository(); }