net.lenni0451.reflect

Class ClassLoaders

java.lang.Object

net.lenni0451.reflect.ClassLoaders

public class ClassLoaders
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
ClassLoaders()

Method Summary

Modifier and Type	Method and Description
static void	addToSystemClassPath(java.net.URL url) Add a URL to the system classpath
static java.lang.Class<?>	defineAnonymousClass(java.lang.Class<?> parent, byte[] bytecode) Define an anonymous class This is java version independent but in java 17+ the parent class is unused
static java.lang.Class<?>	defineClass(java.lang.ClassLoader classLoader, java.lang.String name, byte[] bytecode) Define a class using the given class loader
static java.lang.Class<?>	defineClass(java.lang.ClassLoader classLoader, java.lang.String name, byte[] bytecode, int offset, int length, java.security.ProtectionDomain protectionDomain) Define a class using the given class loader
static java.lang.Class<?>	defineClass(java.lang.ClassLoader classLoader, java.lang.String name, byte[] bytecode, java.security.ProtectionDomain protectionDomain) Define a class using the given class loader
static java.net.URL[]	getSystemClassPath() Get all URLs of the system classpath

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassLoaders

public ClassLoaders()

Method Detail

addToSystemClassPath

public static void addToSystemClassPath(java.net.URL url)

Add a URL to the system classpath

Parameters:

url - The URL to add

getSystemClassPath

public static java.net.URL[] getSystemClassPath()

Get all URLs of the system classpath

Returns:

The system classpath

defineClass

public static java.lang.Class<?> defineClass(java.lang.ClassLoader classLoader,
                                             java.lang.String name,
                                             byte[] bytecode)

Define a class using the given class loader

Parameters:

classLoader - The class loader to use

name - The name of the class

bytecode - The bytecode of the class

Returns:

The defined class

defineClass

public static java.lang.Class<?> defineClass(java.lang.ClassLoader classLoader,
                                             java.lang.String name,
                                             byte[] bytecode,
                                             java.security.ProtectionDomain protectionDomain)

Define a class using the given class loader

Parameters:

classLoader - The class loader to use

name - The name of the class

bytecode - The bytecode of the class

protectionDomain - The protection domain of the class

Returns:

The defined class

defineClass

public static java.lang.Class<?> defineClass(java.lang.ClassLoader classLoader,
                                             java.lang.String name,
                                             byte[] bytecode,
                                             int offset,
                                             int length,
                                             java.security.ProtectionDomain protectionDomain)

Define a class using the given class loader

Parameters:

classLoader - The class loader to use

name - The name of the class

bytecode - The bytecode of the class

offset - The offset of the class in the bytecode

length - The length of the class in the bytecode

protectionDomain - The protection domain of the class

Returns:

The defined class

defineAnonymousClass

public static java.lang.Class<?> defineAnonymousClass(java.lang.Class<?> parent,
                                                      byte[] bytecode)

Define an anonymous class
This is java version independent but in java 17+ the parent class is unused

Parameters:

parent - The parent class (unused in java 17+)

bytecode - The bytecode of the class

Returns:

The defined class