http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5. 
public class org.bouncycastle.jce.provider.symmetric.AES$AlgParams extends org.bouncycastle.jce.provider.JDKAlgorithmParameters$IVAlgorithmParameters
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.jce.provider.symmetric.AES$AlgParams
  super_class: org.bouncycastle.jce.provider.JDKAlgorithmParameters$IVAlgorithmParameters
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.jce.provider.symmetric.AES$AlgParams this
         0: .line 177
            aload 0 /* this */
            invokespecial org.bouncycastle.jce.provider.JDKAlgorithmParameters$IVAlgorithmParameters.<init>:()V
            return
        end local 0 // org.bouncycastle.jce.provider.symmetric.AES$AlgParams this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/jce/provider/symmetric/AES$AlgParams;

  protected java.lang.String engineToString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.jce.provider.symmetric.AES$AlgParams this
         0: .line 182
            ldc "AES IV"
            areturn
        end local 0 // org.bouncycastle.jce.provider.symmetric.AES$AlgParams this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/jce/provider/symmetric/AES$AlgParams;
}
SourceFile: "AES.java"
NestHost: org.bouncycastle.jce.provider.symmetric.AES
InnerClasses:
  public IVAlgorithmParameters = org.bouncycastle.jce.provider.JDKAlgorithmParameters$IVAlgorithmParameters of org.bouncycastle.jce.provider.JDKAlgorithmParameters
  public AlgParams = org.bouncycastle.jce.provider.symmetric.AES$AlgParams of org.bouncycastle.jce.provider.symmetric.AES