https://www.graalvm.org/ 
class com.oracle.truffle.nfi.test.ExceptionNFITest$MyException extends java.lang.RuntimeException
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.nfi.test.ExceptionNFITest$MyException
  super_class: java.lang.RuntimeException
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 5984933885288699021

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.nfi.test.ExceptionNFITest$MyException this
         0: .line 57
            aload 0 /* this */
            invokespecial java.lang.RuntimeException.<init>:()V
            return
        end local 0 // com.oracle.truffle.nfi.test.ExceptionNFITest$MyException this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/nfi/test/ExceptionNFITest$MyException;
}
SourceFile: "ExceptionNFITest.java"
NestHost: com.oracle.truffle.nfi.test.ExceptionNFITest
InnerClasses:
  MyException = com.oracle.truffle.nfi.test.ExceptionNFITest$MyException of com.oracle.truffle.nfi.test.ExceptionNFITest