http://fastutil.di.unimi.it/: fastutil extends the Java Collections Framework by providing type-specific maps, sets, lists and priority queues with a small memory footprint and fast access and insertion; provides also big (64-bit) arrays, sets and lists, and fast, practical I/O classes for binary and text files.
  • Sebastiano Vigna 
class it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator extends it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap<V>.MapIterator implements it.unimi.dsi.fastutil.objects.ObjectIterator<it.unimi.dsi.fastutil.ints.Int2ReferenceMap$Entry<V>>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator
  super_class: it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$MapIterator
{
  private final it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap<V>.MapEntry entry;
    descriptor: Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap$MapEntry;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap<TV;>.MapEntry;

  final it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap this$0;
    descriptor: Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private void <init>(it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap);
    descriptor: (Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator this
         0: .line 749
            aload 0 /* this */
            aload 1
            putfield it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator.this$0:Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap;
            aload 0 /* this */
            aload 1
            invokespecial it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$MapIterator.<init>:(Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap;)V
         1: .line 750
            aload 0 /* this */
            new it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$MapEntry
            dup
            aload 1
            invokespecial it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$MapEntry.<init>:(Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap;)V
            putfield it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator.entry:Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap$MapEntry;
         2: .line 749
            return
        end local 0 // it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap$FastEntryIterator;
    MethodParameters:
        Name  Flags
      this$0  final

  public it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap<V>.MapEntry next();
    descriptor: ()Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap$MapEntry;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator this
         0: .line 753
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator.entry:Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap$MapEntry;
            aload 0 /* this */
            invokevirtual it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator.nextEntry:()I
            putfield it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$MapEntry.index:I
         1: .line 754
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator.entry:Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap$MapEntry;
            areturn
        end local 0 // it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap$FastEntryIterator;
    Signature: ()Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap<TV;>.MapEntry;

  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 it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator.next:()Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap$MapEntry;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Lit/unimi/dsi/fastutil/ints/Int2ReferenceOpenHashMap<TV;>.MapIterator;Lit/unimi/dsi/fastutil/objects/ObjectIterator<Lit/unimi/dsi/fastutil/ints/Int2ReferenceMap$Entry<TV;>;>;
SourceFile: "Int2ReferenceOpenHashMap.java"
NestHost: it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap
InnerClasses:
  public abstract Entry = it.unimi.dsi.fastutil.ints.Int2ReferenceMap$Entry of it.unimi.dsi.fastutil.ints.Int2ReferenceMap
  private FastEntryIterator = it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$FastEntryIterator of it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap
  final MapEntry = it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$MapEntry of it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap
  private MapIterator = it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap$MapIterator of it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap