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.JCEIESCipher$IES extends org.bouncycastle.jce.provider.JCEIESCipher
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.jce.provider.JCEIESCipher$IES
  super_class: org.bouncycastle.jce.provider.JCEIESCipher
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=9, locals=1, args_size=1
        start local 0 // org.bouncycastle.jce.provider.JCEIESCipher$IES this
         0: .line 394
            aload 0 /* this */
            new org.bouncycastle.crypto.engines.IESEngine
            dup
         1: .line 395
            new org.bouncycastle.crypto.agreement.DHBasicAgreement
            dup
            invokespecial org.bouncycastle.crypto.agreement.DHBasicAgreement.<init>:()V
         2: .line 396
            new org.bouncycastle.crypto.generators.KDF2BytesGenerator
            dup
            new org.bouncycastle.crypto.digests.SHA1Digest
            dup
            invokespecial org.bouncycastle.crypto.digests.SHA1Digest.<init>:()V
            invokespecial org.bouncycastle.crypto.generators.KDF2BytesGenerator.<init>:(Lorg/bouncycastle/crypto/Digest;)V
         3: .line 397
            new org.bouncycastle.crypto.macs.HMac
            dup
            new org.bouncycastle.crypto.digests.SHA1Digest
            dup
            invokespecial org.bouncycastle.crypto.digests.SHA1Digest.<init>:()V
            invokespecial org.bouncycastle.crypto.macs.HMac.<init>:(Lorg/bouncycastle/crypto/Digest;)V
         4: .line 394
            invokespecial org.bouncycastle.crypto.engines.IESEngine.<init>:(Lorg/bouncycastle/crypto/BasicAgreement;Lorg/bouncycastle/crypto/DerivationFunction;Lorg/bouncycastle/crypto/Mac;)V
            invokespecial org.bouncycastle.jce.provider.JCEIESCipher.<init>:(Lorg/bouncycastle/crypto/engines/IESEngine;)V
         5: .line 398
            return
        end local 0 // org.bouncycastle.jce.provider.JCEIESCipher$IES this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lorg/bouncycastle/jce/provider/JCEIESCipher$IES;
}
SourceFile: "JCEIESCipher.java"
NestHost: org.bouncycastle.jce.provider.JCEIESCipher
InnerClasses:
  public IES = org.bouncycastle.jce.provider.JCEIESCipher$IES of org.bouncycastle.jce.provider.JCEIESCipher