JavaTM 2 Platform Std. Ed. v1.6.0
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() method or
from the platform MBeanServer method.
The ObjectName for uniquely identifying the MXBean for
the class loading system within an MBeanServer is:
java.lang:type=ClassLoading
- Since:
- 1.5
- See Also:
-
JMX Specification.,
Ways to Access MXBeans
Method Summary |
int |
getLoadedClassCount()
Returns the number of classes that are currently loaded in the
Java virtual machine. |
long |
getTotalLoadedClassCount()
Returns the total number of classes that have been loaded since
the Java virtual machine has started execution. |
long |
getUnloadedClassCount()
Returns the total number of classes unloaded since the Java virtual machine
has started execution. |
boolean |
isVerbose()
Tests if the verbose output for the class loading system is enabled. |
void |
setVerbose(boolean value)
Enables or disables the verbose output for the class loading
system. |
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
int getLoadedClassCount()
- Returns the number of classes that are currently loaded in the
Java virtual machine.
- Returns:
- the number of currently loaded classes.
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
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
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 - if a security manager
exists and the caller does not have
ManagementPermission("control").
Copyright 2003 Sun Microsystems, Inc. All rights reserved
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