http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project) 
public class io.netty.handler.codec.http.websocketx.WebSocketHandshakeException extends java.lang.RuntimeException
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: io.netty.handler.codec.http.websocketx.WebSocketHandshakeException
  super_class: java.lang.RuntimeException
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  public void <init>(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.http.websocketx.WebSocketHandshakeException this
        start local 1 // java.lang.String s
         0: .line 26
            aload 0 /* this */
            aload 1 /* s */
            invokespecial java.lang.RuntimeException.<init>:(Ljava/lang/String;)V
         1: .line 27
            return
        end local 1 // java.lang.String s
        end local 0 // io.netty.handler.codec.http.websocketx.WebSocketHandshakeException this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/handler/codec/http/websocketx/WebSocketHandshakeException;
            0    2     1     s  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      s     

  public void <init>(java.lang.String, java.lang.Throwable);
    descriptor: (Ljava/lang/String;Ljava/lang/Throwable;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // io.netty.handler.codec.http.websocketx.WebSocketHandshakeException this
        start local 1 // java.lang.String s
        start local 2 // java.lang.Throwable throwable
         0: .line 30
            aload 0 /* this */
            aload 1 /* s */
            aload 2 /* throwable */
            invokespecial java.lang.RuntimeException.<init>:(Ljava/lang/String;Ljava/lang/Throwable;)V
         1: .line 31
            return
        end local 2 // java.lang.Throwable throwable
        end local 1 // java.lang.String s
        end local 0 // io.netty.handler.codec.http.websocketx.WebSocketHandshakeException this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    2     0       this  Lio/netty/handler/codec/http/websocketx/WebSocketHandshakeException;
            0    2     1          s  Ljava/lang/String;
            0    2     2  throwable  Ljava/lang/Throwable;
    MethodParameters:
           Name  Flags
      s          
      throwable  
}
SourceFile: "WebSocketHandshakeException.java"