org.hotswap.agent.javassist.util.proxy

Class DefineClassHelper

java.lang.Object

org.hotswap.agent.javassist.util.proxy.DefineClassHelper

public class DefineClassHelper
extends Object

Helper class for invoking ClassLoader.defineClass(String,byte[],int,int).

Since:

3.22

Constructor Summary

Constructors

Constructor and Description
DefineClassHelper()

Method Summary

Modifier and Type	Method and Description
static Class<?>	toClass(String className, ClassLoader loader, ProtectionDomain domain, byte[] bcode) Loads a class file by a given class loader.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefineClassHelper

public DefineClassHelper()

Method Detail

toClass

public static Class<?> toClass(String className,
                               ClassLoader loader,
                               ProtectionDomain domain,
                               byte[] bcode)
                        throws CannotCompileException

Loads a class file by a given class loader.

This first tries to use sun.misc.Unsafe to load a class. Then it tries to use a protected method in java.lang.ClassLoader via PrivilegedAction. Since the latter approach is not available any longer by default in Java 9 or later, the JVM argument --add-opens java.base/java.lang=ALL-UNNAMED must be given to the JVM. If this JVM argument cannot be given, #toPublicClass(String,byte[]) should be used instead.

Parameters:

domain - if it is null, a default domain is used.

Throws:

CannotCompileException

Since:

3.22