OpenJDK 27 · java.lang.instrument.ClassDefinition · APIdia, the JavaDoc alternative

This class serves as a parameter block to the Instrumentation.redefineClasses method. Serves to bind the Class that needs redefining together with the new class file bytes.

Field Summary

Modifier and Type	Field and Description
private final Class<?>	mClass The class to redefine
private final byte[]	mClassFile The replacement class file bytes

Constructor Summary

Access	Constructor and Description
public	ClassDefinition(Class<?> the `Class` that needs redefining theClass, byte[] the new class file bytes theClassFile) Creates a new `ClassDefinition` binding using the supplied class and class file bytes.

Method Summary

Modifier and Type	Method and Description
public Class<?>	Returns: the `Class` object referred to. getDefinitionClass() Returns the class.
public byte[]	Returns: the class file bytes. getDefinitionClassFile() Returns the array of bytes that contains the new class file.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

mClass	back to summary
private final Class<?> mClass The class to redefine

mClassFile	back to summary
private final byte[] mClassFile The replacement class file bytes

Constructor Detail

ClassDefinition back to summary

ClassDefinition	back to summary
public ClassDefinition(Class<?> theClass, byte[] theClassFile) Creates a new `ClassDefinition` binding using the supplied class and class file bytes. Does not copy the supplied buffer, just captures a reference to it. Parameters theClass:Class<?> the `Class` that needs redefining theClassFile:byte[] the new class file bytes Exceptions NullPointerException: if the supplied class or array is `null`.

public ClassDefinition(Class<?> theClass, byte[] theClassFile)

Creates a new ClassDefinition binding using the supplied class and class file bytes. Does not copy the supplied buffer, just captures a reference to it.

Parameters

theClass:Class<?>: the Class that needs redefining
theClassFile:byte[]: the new class file bytes

Exceptions

NullPointerException:: if the supplied class or array is null.

Method Detail

getDefinitionClass back to summary

getDefinitionClass	back to summary
public Class<?> getDefinitionClass() Returns the class. Returns:Class<?> the `Class` object referred to.

public Class<?> getDefinitionClass()

Returns the class.

Returns:Class<?>: the Class object referred to.

getDefinitionClassFile	back to summary
public byte[] getDefinitionClassFile() Returns the array of bytes that contains the new class file. Returns:byte[] the class file bytes.

getDefinitionClassFile

back to summary

public byte[] getDefinitionClassFile()

Returns the array of bytes that contains the new class file.