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.longs.Long2DoubleOpenHashMap$EntryIterator extends it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$MapIterator implements it.unimi.dsi.fastutil.objects.ObjectIterator<it.unimi.dsi.fastutil.longs.Long2DoubleMap$Entry>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator
  super_class: it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$MapIterator
{
  private it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$MapEntry entry;
    descriptor: Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap$MapEntry;
    flags: (0x0002) ACC_PRIVATE

  final it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap this$0;
    descriptor: Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private void <init>(it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap);
    descriptor: (Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator this
         0: .line 811
            aload 0 /* this */
            aload 1
            putfield it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator.this$0:Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap;
            aload 0 /* this */
            aload 1
            invokespecial it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$MapIterator.<init>:(Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap;)V
            return
        end local 0 // it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap$EntryIterator;
    MethodParameters:
        Name  Flags
      this$0  final

  public it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$MapEntry next();
    descriptor: ()Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap$MapEntry;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator this
         0: .line 815
            aload 0 /* this */
            new it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$MapEntry
            dup
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator.this$0:Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap;
            aload 0 /* this */
            invokevirtual it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator.nextEntry:()I
            invokespecial it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$MapEntry.<init>:(Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap;I)V
            dup_x1
            putfield it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator.entry:Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap$MapEntry;
            areturn
        end local 0 // it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap$EntryIterator;

  public void remove();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator this
         0: .line 819
            aload 0 /* this */
            invokespecial it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$MapIterator.remove:()V
         1: .line 820
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator.entry:Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap$MapEntry;
            iconst_m1
            putfield it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$MapEntry.index:I
         2: .line 821
            return
        end local 0 // it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap$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 it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator.next:()Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap$MapEntry;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Lit/unimi/dsi/fastutil/longs/Long2DoubleOpenHashMap$MapIterator;Lit/unimi/dsi/fastutil/objects/ObjectIterator<Lit/unimi/dsi/fastutil/longs/Long2DoubleMap$Entry;>;
SourceFile: "Long2DoubleOpenHashMap.java"
NestHost: it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap
InnerClasses:
  public abstract Entry = it.unimi.dsi.fastutil.longs.Long2DoubleMap$Entry of it.unimi.dsi.fastutil.longs.Long2DoubleMap
  private EntryIterator = it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$EntryIterator of it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap
  final MapEntry = it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$MapEntry of it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap
  private MapIterator = it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap$MapIterator of it.unimi.dsi.fastutil.longs.Long2DoubleOpenHashMap