https://github.com/cglib/cglib/cglib: cglib is a powerful, high performance and quality Code Generation Library, It is used to extend JAVA classes and implements interfaces at runtime. 
class net.sf.cglib.core.ClassNameReader$EarlyExitException extends java.lang.RuntimeException
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: net.sf.cglib.core.ClassNameReader$EarlyExitException
  super_class: java.lang.RuntimeException
{
  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // net.sf.cglib.core.ClassNameReader$EarlyExitException this
         0: .line 29
            aload 0 /* this */
            invokespecial java.lang.RuntimeException.<init>:()V
            return
        end local 0 // net.sf.cglib.core.ClassNameReader$EarlyExitException this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lnet/sf/cglib/core/ClassNameReader$EarlyExitException;
}
SourceFile: "ClassNameReader.java"
NestHost: net.sf.cglib.core.ClassNameReader
InnerClasses:
  private EarlyExitException = net.sf.cglib.core.ClassNameReader$EarlyExitException of net.sf.cglib.core.ClassNameReader