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 
final class it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator extends it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap<V>.TreeIterator implements it.unimi.dsi.fastutil.longs.LongListIterator
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator
  super_class: it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$TreeIterator
{
  final it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap this$0;
    descriptor: Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  public void <init>(it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap);
    descriptor: (Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator this
         0: .line 1214
            aload 0 /* this */
            aload 1
            putfield it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator.this$0:Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap;
            aload 0 /* this */
            aload 1
            invokespecial it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$TreeIterator.<init>:(Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap;)V
         1: .line 1215
            return
        end local 0 // it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap$KeyIterator;
    MethodParameters:
        Name  Flags
      this$0  final

  public void <init>(it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap, long);
    descriptor: (Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap;J)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=4, args_size=3
        start local 0 // it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator this
        start local 2 // long k
         0: .line 1216
            aload 0 /* this */
            aload 1
            putfield it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator.this$0:Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap;
         1: .line 1217
            aload 0 /* this */
            aload 1
            lload 2 /* k */
            invokespecial it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$TreeIterator.<init>:(Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap;J)V
         2: .line 1218
            return
        end local 2 // long k
        end local 0 // it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap$KeyIterator;
            0    3     2     k  J
    MethodParameters:
        Name  Flags
      this$0  final
      k       final

  public long nextLong();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator this
         0: .line 1221
            aload 0 /* this */
            invokevirtual it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator.nextEntry:()Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap$Entry;
            getfield it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$Entry.key:J
            lreturn
        end local 0 // it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap$KeyIterator;

  public long previousLong();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator this
         0: .line 1225
            aload 0 /* this */
            invokevirtual it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator.previousEntry:()Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap$Entry;
            getfield it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$Entry.key:J
            lreturn
        end local 0 // it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap$KeyIterator;

  public void set(java.lang.Object);
    descriptor: (Ljava/lang/Object;)V
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast java.lang.Long
            invokeinterface it.unimi.dsi.fastutil.longs.LongListIterator.set:(Ljava/lang/Long;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  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
            invokeinterface it.unimi.dsi.fastutil.longs.LongListIterator.next:()Ljava/lang/Long;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public java.lang.Object previous();
    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
            invokeinterface it.unimi.dsi.fastutil.longs.LongListIterator.previous:()Ljava/lang/Long;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void forEachRemaining(java.lang.Object);
    descriptor: (Ljava/lang/Object;)V
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast java.util.function.LongConsumer
            invokeinterface java.util.PrimitiveIterator$OfLong.forEachRemaining:(Ljava/util/function/LongConsumer;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void add(java.lang.Object);
    descriptor: (Ljava/lang/Object;)V
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast java.lang.Long
            invokeinterface it.unimi.dsi.fastutil.longs.LongListIterator.add:(Ljava/lang/Long;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Lit/unimi/dsi/fastutil/longs/Long2ReferenceAVLTreeMap<TV;>.TreeIterator;Lit/unimi/dsi/fastutil/longs/LongListIterator;
SourceFile: "Long2ReferenceAVLTreeMap.java"
NestHost: it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap
InnerClasses:
  private final Entry = it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$Entry of it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap
  private final KeyIterator = it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$KeyIterator of it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap
  private TreeIterator = it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap$TreeIterator of it.unimi.dsi.fastutil.longs.Long2ReferenceAVLTreeMap
  public abstract OfLong = java.util.PrimitiveIterator$OfLong of java.util.PrimitiveIterator