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.Int2IntArrayMap$1$1 implements it.unimi.dsi.fastutil.ints.IntIterator
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1
  super_class: java.lang.Object
{
  int pos;
    descriptor: I
    flags: (0x0000) 

  final it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1 this$1;
    descriptor: Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1);
    descriptor: (Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1 this
         0: .line 323
            aload 0 /* this */
            aload 1
            putfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.this$1:Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 324
            aload 0 /* this */
            iconst_0
            putfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.pos:I
         2: .line 323
            return
        end local 0 // it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1$1;
    MethodParameters:
        Name  Flags
      this$0  final

  public boolean hasNext();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1 this
         0: .line 327
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.pos:I
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.this$1:Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;
            invokestatic it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1.access$1:(Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;)Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap;
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap.size:I
            if_icmpge 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1$1;

  public int nextInt();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1 this
         0: .line 332
            aload 0 /* this */
            invokevirtual it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.hasNext:()Z
            ifne 2
         1: .line 333
            new java.util.NoSuchElementException
            dup
            invokespecial java.util.NoSuchElementException.<init>:()V
            athrow
         2: .line 334
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.this$1:Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;
            invokestatic it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1.access$1:(Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;)Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap;
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap.key:[I
            aload 0 /* this */
            dup
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.pos:I
            dup_x1
            iconst_1
            iadd
            putfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.pos:I
            iaload
            ireturn
        end local 0 // it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1$1;

  public void remove();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=2, args_size=1
        start local 0 // it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1 this
         0: .line 338
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.pos:I
            ifne 2
         1: .line 339
            new java.lang.IllegalStateException
            dup
            invokespecial java.lang.IllegalStateException.<init>:()V
            athrow
         2: .line 340
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.this$1:Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;
            invokestatic it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1.access$1:(Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;)Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap;
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap.size:I
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.pos:I
            isub
            istore 1 /* tail */
        start local 1 // int tail
         3: .line 341
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.this$1:Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;
            invokestatic it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1.access$1:(Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;)Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap;
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap.key:[I
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.pos:I
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.this$1:Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;
            invokestatic it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1.access$1:(Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;)Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap;
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap.key:[I
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.pos:I
            iconst_1
            isub
            iload 1 /* tail */
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
         4: .line 342
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.this$1:Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;
            invokestatic it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1.access$1:(Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;)Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap;
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap.value:[I
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.pos:I
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.this$1:Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;
            invokestatic it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1.access$1:(Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;)Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap;
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap.value:[I
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.pos:I
            iconst_1
            isub
            iload 1 /* tail */
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
         5: .line 343
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1.this$1:Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;
            invokestatic it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1.access$1:(Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1;)Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap;
            dup
            getfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap.size:I
            iconst_1
            isub
            putfield it.unimi.dsi.fastutil.ints.Int2IntArrayMap.size:I
         6: .line 344
            return
        end local 1 // int tail
        end local 0 // it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Lit/unimi/dsi/fastutil/ints/Int2IntArrayMap$1$1;
            3    7     1  tail  I

  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.ints.IntIterator.next:()Ljava/lang/Integer;
            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.IntConsumer
            invokeinterface java.util.PrimitiveIterator$OfInt.forEachRemaining:(Ljava/util/function/IntConsumer;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "Int2IntArrayMap.java"
EnclosingMethod: it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1.iterator:()Lit/unimi/dsi/fastutil/ints/IntIterator;
NestHost: it.unimi.dsi.fastutil.ints.Int2IntArrayMap
InnerClasses:
  it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1
  it.unimi.dsi.fastutil.ints.Int2IntArrayMap$1$1
  public abstract OfInt = java.util.PrimitiveIterator$OfInt of java.util.PrimitiveIterator