DefineClassHelper (Javassist API)

java.lang.Object
- javassist.util.proxy.DefineClassHelper

```
public class DefineClassHelper
extends java.lang.Object
```
Helper class for invoking ClassLoader.defineClass(String,byte[],int,int).

Since:

3.22

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static java.lang.Class<?>`	`toClass(java.lang.String className, java.lang.ClassLoader loader, java.security.ProtectionDomain domain, byte[] bcode)`	Loads a class file by a given class loader.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - toClass
```
public static java.lang.Class<?> toClass(java.lang.String className,
                                         java.lang.ClassLoader loader,
                                         java.security.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