http://grizzly.java.net/grizzly-npn-bootstrap: Eclipse Enterprise for Java (EE4J) is an open source initiative to create standard APIs, implementations of those APIs, and technology compatibility kits for Java runtimes that enable development, deployment, and management of server-side and cloud-native applications. (Oracle Corporation) 
final class sun.security.ssl.NextProtocolNegotiationExtension
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: sun.security.ssl.NextProtocolNegotiationExtension
  super_class: java.lang.Object
{
  private static final java.util.LinkedHashSet<java.lang.String> EMPTY;
    descriptor: Ljava/util/LinkedHashSet;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    Signature: Ljava/util/LinkedHashSet<Ljava/lang/String;>;

  public static final int EXTENSION_ID;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 13172

  java.util.LinkedHashSet<java.lang.String> protocols;
    descriptor: Ljava/util/LinkedHashSet;
    flags: (0x0000) 
    Signature: Ljava/util/LinkedHashSet<Ljava/lang/String;>;

  private byte[] outData;
    descriptor: [B
    flags: (0x0002) ACC_PRIVATE

  public void <init>(sun.security.ssl.ExtensionType);
    descriptor: (Lsun/security/ssl/ExtensionType;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // sun.security.ssl.NextProtocolNegotiationExtension this
         0: .line 38
            new java.lang.Error
            dup
            ldc "Unresolved compilation problems: \n\tHelloExtension cannot be resolved to a type\n\tThe method length() of type NextProtocolNegotiationExtension must override or implement a supertype method\n\tThe method send(HandshakeOutStream) of type NextProtocolNegotiationExtension must override or implement a supertype method\n\tThe method toString() of type NextProtocolNegotiationExtension must override or implement a supertype method\n\tDebug cannot be resolved\n\tHandshakeInStream cannot be resolved to a type\n\tHandshakeInStream cannot be resolved to a type\n\tHandshakeInStream cannot be resolved to a type\n\tHandshakeInStream cannot be resolved to a type\n\tHandshakeInStream cannot be resolved to a type\n\tHandshakeInStream cannot be resolved to a type\n"
            invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // sun.security.ssl.NextProtocolNegotiationExtension this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/security/ssl/NextProtocolNegotiationExtension;
    MethodParameters:
               Name  Flags
      extensionType  final

  int length();
    descriptor: ()I
    flags: (0x0000) 
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // sun.security.ssl.NextProtocolNegotiationExtension this
         0: .line 59
            new java.lang.Error
            dup
            ldc "Unresolved compilation problem: \n\tThe method length() of type NextProtocolNegotiationExtension must override or implement a supertype method\n"
            invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // sun.security.ssl.NextProtocolNegotiationExtension this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/security/ssl/NextProtocolNegotiationExtension;

  void send(sun.security.ssl.HandshakeOutStream);
    descriptor: (Lsun/security/ssl/HandshakeOutStream;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // sun.security.ssl.NextProtocolNegotiationExtension this
         0: .line 68
            new java.lang.Error
            dup
            ldc "Unresolved compilation problem: \n\tThe method send(HandshakeOutStream) of type NextProtocolNegotiationExtension must override or implement a supertype method\n"
            invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // sun.security.ssl.NextProtocolNegotiationExtension this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/security/ssl/NextProtocolNegotiationExtension;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
                    Name  Flags
      handshakeOutStream  

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // sun.security.ssl.NextProtocolNegotiationExtension this
         0: .line 75
            new java.lang.Error
            dup
            ldc "Unresolved compilation problems: \n\tThe method toString() of type NextProtocolNegotiationExtension must override or implement a supertype method\n\tDebug cannot be resolved\n"
            invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // sun.security.ssl.NextProtocolNegotiationExtension this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/security/ssl/NextProtocolNegotiationExtension;

  static sun.security.ssl.NextProtocolNegotiationExtension$Builder builder();
    descriptor: ()Lsun/security/ssl/NextProtocolNegotiationExtension$Builder;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=0, args_size=0
         0: .line 87
            new java.lang.Error
            dup
            ldc "Unresolved compilation problem: \n"
            invokespecial java.lang.Error.<init>:(Ljava/lang/String;)V
            athrow
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "NextProtocolNegotiationExtension.java"
NestMembers:
  sun.security.ssl.NextProtocolNegotiationExtension$Builder
InnerClasses:
  final Builder = sun.security.ssl.NextProtocolNegotiationExtension$Builder of sun.security.ssl.NextProtocolNegotiationExtension