java.lang.management
Interface ClassLoadingMXBean


public interface ClassLoadingMXBean

The management interface for the class loading system of the Java virtual machine.

A Java virtual machine has a single instance of the implementation class of this interface. This instance implementing this interface is an MXBean that can be obtained by calling the ManagementFactory.getClassLoadingMXBean() sample code for java.lang.management.ManagementFactory.getClassLoadingMXBean() definition code for java.lang.management.ManagementFactory.getClassLoadingMXBean() method or from the platform MBeanServer sample code for java.lang.management.ManagementFactory.getPlatformMBeanServer() definition code for java.lang.management.ManagementFactory.getPlatformMBeanServer() method.

The ObjectName for uniquely identifying the MXBean for the class loading system within an MBeanServer is:

java.lang:type=ClassLoading sample code for java.lang.management.ManagementFactory.CLASS_LOADING_MXBEAN_NAME definition code for java.lang.management.ManagementFactory.CLASS_LOADING_MXBEAN_NAME

Since:
1.5
See Also:
JMX Specification., Ways to Access MXBeans

Method Summary
 int getLoadedClassCount sample code for java.lang.management.ClassLoadingMXBean.getLoadedClassCount() definition code for java.lang.management.ClassLoadingMXBean.getLoadedClassCount() ()
          Returns the number of classes that are currently loaded in the Java virtual machine.
 long getTotalLoadedClassCount sample code for java.lang.management.ClassLoadingMXBean.getTotalLoadedClassCount() definition code for java.lang.management.ClassLoadingMXBean.getTotalLoadedClassCount() ()
          Returns the total number of classes that have been loaded since the Java virtual machine has started execution.
 long getUnloadedClassCount sample code for java.lang.management.ClassLoadingMXBean.getUnloadedClassCount() definition code for java.lang.management.ClassLoadingMXBean.getUnloadedClassCount() ()
          Returns the total number of classes unloaded since the Java virtual machine has started execution.
 boolean isVerbose sample code for java.lang.management.ClassLoadingMXBean.isVerbose() definition code for java.lang.management.ClassLoadingMXBean.isVerbose() ()
          Tests if the verbose output for the class loading system is enabled.
 void setVerbose sample code for java.lang.management.ClassLoadingMXBean.setVerbose(boolean) definition code for java.lang.management.ClassLoadingMXBean.setVerbose(boolean) (boolean value)
          Enables or disables the verbose output for the class loading system.
 

Method Detail

getTotalLoadedClassCount sample code for java.lang.management.ClassLoadingMXBean.getTotalLoadedClassCount() definition code for java.lang.management.ClassLoadingMXBean.getTotalLoadedClassCount()

long getTotalLoadedClassCount()
Returns the total number of classes that have been loaded since the Java virtual machine has started execution.

Returns:
the total number of classes loaded.

getLoadedClassCount sample code for java.lang.management.ClassLoadingMXBean.getLoadedClassCount() definition code for java.lang.management.ClassLoadingMXBean.getLoadedClassCount()

int getLoadedClassCount()
Returns the number of classes that are currently loaded in the Java virtual machine.

Returns:
the number of currently loaded classes.

getUnloadedClassCount sample code for java.lang.management.ClassLoadingMXBean.getUnloadedClassCount() definition code for java.lang.management.ClassLoadingMXBean.getUnloadedClassCount()

long getUnloadedClassCount()
Returns the total number of classes unloaded since the Java virtual machine has started execution.

Returns:
the total number of unloaded classes.

isVerbose sample code for java.lang.management.ClassLoadingMXBean.isVerbose() definition code for java.lang.management.ClassLoadingMXBean.isVerbose()

boolean isVerbose()
Tests if the verbose output for the class loading system is enabled.

Returns:
true if the verbose output for the class loading system is enabled; false otherwise.

setVerbose sample code for java.lang.management.ClassLoadingMXBean.setVerbose(boolean) definition code for java.lang.management.ClassLoadingMXBean.setVerbose(boolean)

void setVerbose(boolean value)
Enables or disables the verbose output for the class loading system. The verbose output information and the output stream to which the verbose information is emitted are implementation dependent. Typically, a Java virtual machine implementation prints a message each time a class file is loaded.

This method can be called by multiple threads concurrently. Each invocation of this method enables or disables the verbose output globally.

Parameters:
value - true to enable the verbose output; false to disable.
Throws:
SecurityException sample code for java.lang.SecurityException definition code for java.lang.SecurityException - if a security manager exists and the caller does not have ManagementPermission("control").