https://www.graalvm.org/ 
class org.graalvm.component.installer.jar.JarArchive$EntryIterator implements java.util.Iterator<org.graalvm.component.installer.Archive$FileEntry>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.graalvm.component.installer.jar.JarArchive$EntryIterator
  super_class: java.lang.Object
{
  private final java.util.Enumeration<java.util.jar.JarEntry> enEntries;
    descriptor: Ljava/util/Enumeration;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/Enumeration<Ljava/util/jar/JarEntry;>;

  void <init>(java.util.Enumeration<java.util.jar.JarEntry>);
    descriptor: (Ljava/util/Enumeration;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.graalvm.component.installer.jar.JarArchive$EntryIterator this
        start local 1 // java.util.Enumeration enEntries
         0: .line 106
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 107
            aload 0 /* this */
            aload 1 /* enEntries */
            putfield org.graalvm.component.installer.jar.JarArchive$EntryIterator.enEntries:Ljava/util/Enumeration;
         2: .line 108
            return
        end local 1 // java.util.Enumeration enEntries
        end local 0 // org.graalvm.component.installer.jar.JarArchive$EntryIterator this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    3     0       this  Lorg/graalvm/component/installer/jar/JarArchive$EntryIterator;
            0    3     1  enEntries  Ljava/util/Enumeration<Ljava/util/jar/JarEntry;>;
    Signature: (Ljava/util/Enumeration<Ljava/util/jar/JarEntry;>;)V
    MethodParameters:
           Name  Flags
      enEntries  

  public boolean hasNext();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.component.installer.jar.JarArchive$EntryIterator this
         0: .line 112
            aload 0 /* this */
            getfield org.graalvm.component.installer.jar.JarArchive$EntryIterator.enEntries:Ljava/util/Enumeration;
            invokeinterface java.util.Enumeration.hasMoreElements:()Z
            ireturn
        end local 0 // org.graalvm.component.installer.jar.JarArchive$EntryIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/component/installer/jar/JarArchive$EntryIterator;

  public org.graalvm.component.installer.jar.JarArchive$JarEntryImpl next();
    descriptor: ()Lorg/graalvm/component/installer/jar/JarArchive$JarEntryImpl;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.graalvm.component.installer.jar.JarArchive$EntryIterator this
         0: .line 117
            new org.graalvm.component.installer.jar.JarArchive$JarEntryImpl
            dup
            aload 0 /* this */
            getfield org.graalvm.component.installer.jar.JarArchive$EntryIterator.enEntries:Ljava/util/Enumeration;
            invokeinterface java.util.Enumeration.nextElement:()Ljava/lang/Object;
            checkcast java.util.jar.JarEntry
            invokespecial org.graalvm.component.installer.jar.JarArchive$JarEntryImpl.<init>:(Ljava/util/jar/JarEntry;)V
            areturn
        end local 0 // org.graalvm.component.installer.jar.JarArchive$EntryIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/component/installer/jar/JarArchive$EntryIterator;

  public java.lang.Object next();
    descriptor: ()Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual org.graalvm.component.installer.jar.JarArchive$EntryIterator.next:()Lorg/graalvm/component/installer/jar/JarArchive$JarEntryImpl;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Ljava/util/Iterator<Lorg/graalvm/component/installer/Archive$FileEntry;>;
SourceFile: "JarArchive.java"
NestHost: org.graalvm.component.installer.jar.JarArchive
InnerClasses:
  public abstract FileEntry = org.graalvm.component.installer.Archive$FileEntry of org.graalvm.component.installer.Archive
  private EntryIterator = org.graalvm.component.installer.jar.JarArchive$EntryIterator of org.graalvm.component.installer.jar.JarArchive
  private JarEntryImpl = org.graalvm.component.installer.jar.JarArchive$JarEntryImpl of org.graalvm.component.installer.jar.JarArchive