Module openj9.dtfj

Package com.ibm.dtfj.java.j9

Class JavaClassLoader

java.lang.Object

com.ibm.dtfj.java.j9.JavaClassLoader

All Implemented Interfaces:

JavaClassLoader

public class JavaClassLoader
extends Object
implements JavaClassLoader

Constructor Summary

Constructors

Constructor	Description
JavaClassLoader(JavaRuntime runtime, ImagePointer id, ImagePointer obj)

Method Summary

Modifier and Type	Method	Description
void	addClassID(long id)
boolean	equals(Object obj)	Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
JavaClass	findClass(String name)	Find a named class within this class loader.
Iterator	getCachedClasses()	When a ClassLoader successfully delegates a findClass() request to another ClassLoader, the result of the delegation must be cached within the internal structure so that the VM does not make repeated requests for the same class.
Iterator	getDefinedClasses()	Get the set of classes which are defined in this JavaClassLoader.
long	getID()
JavaObject	getObject()	Get the java.lang.ClassLoader instance associated with this class loader.
int	hashCode()	Answers an integer hash code for the receiver.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JavaClassLoader

public JavaClassLoader(JavaRuntime runtime,
 ImagePointer id,
 ImagePointer obj)

Method Details

getDefinedClasses

public Iterator getDefinedClasses()

Description copied from interface: JavaClassLoader

Get the set of classes which are defined in this JavaClassLoader.

Specified by:

getDefinedClasses in interface JavaClassLoader

Returns:

an iterator over the collection of classes which are defined in this JavaClassLoader

See Also:

• JavaClass
• CorruptData

getCachedClasses

public Iterator getCachedClasses()

Description copied from interface: JavaClassLoader

When a ClassLoader successfully delegates a findClass() request to another ClassLoader, the result of the delegation must be cached within the internal structure so that the VM does not make repeated requests for the same class.

Specified by:

getCachedClasses in interface JavaClassLoader

Returns:

an iterator over the collection of classes which are defined in this JavaClassLoader or which were found by delegation to other JavaClassLoaders

See Also:

• JavaClass
• CorruptData

findClass

public JavaClass findClass(String name)
                    throws CorruptDataException

Description copied from interface: JavaClassLoader

Find a named class within this class loader. The class may have been defined in this class loader, or this class loader may have delegated the load to another class loader and cached the result.

Specified by:

findClass in interface JavaClassLoader

Parameters:

name - of the class to find. Packages should be separated by '/' instead of '.'

Returns:

the JavaClass instance, or null if it is not found

Throws:

CorruptDataException

getObject

public JavaObject getObject()
                     throws CorruptDataException

Description copied from interface: JavaClassLoader

Get the java.lang.ClassLoader instance associated with this class loader.

Specified by:

getObject in interface JavaClassLoader

Returns:

a JavaObject representing the java.lang.ClassLoader instance associated with this class loader, or null if there is no Java class loader associated with this low-level class loader.

Throws:

CorruptDataException

See Also:

• JavaObject
• ClassLoader

getID

public long getID()

addClassID

public void addClassID(long id)

equals

public boolean equals(Object obj)

Description copied from class: java.lang.Object

Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison. The implementation in Object answers true only if the argument is the exact same object as the receiver (==).

Specified by:

equals in interface JavaClassLoader

Overrides:

equals in class Object

Parameters:

obj -

Returns:

True if the given object refers to the same Java Class Loader in the image

See Also:

• Object.hashCode()

hashCode

public int hashCode()

Description copied from class: java.lang.Object

Answers an integer hash code for the receiver. Any two objects which answer true when passed to .equals must answer the same value for this method.

Specified by:

hashCode in interface JavaClassLoader

Overrides:

hashCode in class Object

Returns:

the receiver's hash.

See Also:

• Object.equals(java.lang.Object)