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.doubles.DoubleIterators$IteratorConcatenator implements it.unimi.dsi.fastutil.doubles.DoubleIterator
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator
  super_class: java.lang.Object
{
  final it.unimi.dsi.fastutil.doubles.DoubleIterator[] a;
    descriptor: [Lit/unimi/dsi/fastutil/doubles/DoubleIterator;
    flags: (0x0010) ACC_FINAL

  int offset;
    descriptor: I
    flags: (0x0000) 

  int length;
    descriptor: I
    flags: (0x0000) 

  int lastOffset;
    descriptor: I
    flags: (0x0000) 

  public void <init>(it.unimi.dsi.fastutil.doubles.DoubleIterator[], int, int);
    descriptor: ([Lit/unimi/dsi/fastutil/doubles/DoubleIterator;II)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=4, args_size=4
        start local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
        start local 1 // it.unimi.dsi.fastutil.doubles.DoubleIterator[] a
        start local 2 // int offset
        start local 3 // int length
         0: .line 690
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 689
            aload 0 /* this */
            iconst_m1
            putfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.lastOffset:I
         2: .line 691
            aload 0 /* this */
            aload 1 /* a */
            putfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.a:[Lit/unimi/dsi/fastutil/doubles/DoubleIterator;
         3: .line 692
            aload 0 /* this */
            iload 2 /* offset */
            putfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.offset:I
         4: .line 693
            aload 0 /* this */
            iload 3 /* length */
            putfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.length:I
         5: .line 694
            aload 0 /* this */
            invokevirtual it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.advance:()V
         6: .line 695
            return
        end local 3 // int length
        end local 2 // int offset
        end local 1 // it.unimi.dsi.fastutil.doubles.DoubleIterator[] a
        end local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    7     0    this  Lit/unimi/dsi/fastutil/doubles/DoubleIterators$IteratorConcatenator;
            0    7     1       a  [Lit/unimi/dsi/fastutil/doubles/DoubleIterator;
            0    7     2  offset  I
            0    7     3  length  I
    MethodParameters:
        Name  Flags
      a       final
      offset  
      length  

  private void advance();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
         0: .line 697
            goto 5
         1: .line 698
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.a:[Lit/unimi/dsi/fastutil/doubles/DoubleIterator;
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.offset:I
            aaload
            invokeinterface it.unimi.dsi.fastutil.doubles.DoubleIterator.hasNext:()Z
            ifeq 3
         2: .line 699
            goto 6
         3: .line 700
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            dup
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.length:I
            iconst_1
            isub
            putfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.length:I
         4: .line 701
            aload 0 /* this */
            dup
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.offset:I
            iconst_1
            iadd
            putfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.offset:I
         5: .line 697
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.length:I
            ifne 1
         6: .line 703
      StackMap locals:
      StackMap stack:
            return
        end local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Lit/unimi/dsi/fastutil/doubles/DoubleIterators$IteratorConcatenator;

  public boolean hasNext();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
         0: .line 707
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.length:I
            ifle 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lit/unimi/dsi/fastutil/doubles/DoubleIterators$IteratorConcatenator;

  public double nextDouble();
    descriptor: ()D
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=1
        start local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
         0: .line 711
            aload 0 /* this */
            invokevirtual it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.hasNext:()Z
            ifne 2
         1: .line 712
            new java.util.NoSuchElementException
            dup
            invokespecial java.util.NoSuchElementException.<init>:()V
            athrow
         2: .line 713
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.a:[Lit/unimi/dsi/fastutil/doubles/DoubleIterator;
            aload 0 /* this */
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.offset:I
            dup_x1
            putfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.lastOffset:I
            aaload
            invokeinterface it.unimi.dsi.fastutil.doubles.DoubleIterator.nextDouble:()D
            dstore 1 /* next */
        start local 1 // double next
         3: .line 714
            aload 0 /* this */
            invokevirtual it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.advance:()V
         4: .line 715
            dload 1 /* next */
            dreturn
        end local 1 // double next
        end local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lit/unimi/dsi/fastutil/doubles/DoubleIterators$IteratorConcatenator;
            3    5     1  next  D

  public void remove();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
         0: .line 719
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.lastOffset:I
            iconst_m1
            if_icmpne 2
         1: .line 720
            new java.lang.IllegalStateException
            dup
            invokespecial java.lang.IllegalStateException.<init>:()V
            athrow
         2: .line 721
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.a:[Lit/unimi/dsi/fastutil/doubles/DoubleIterator;
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.lastOffset:I
            aaload
            invokeinterface it.unimi.dsi.fastutil.doubles.DoubleIterator.remove:()V
         3: .line 722
            return
        end local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lit/unimi/dsi/fastutil/doubles/DoubleIterators$IteratorConcatenator;

  public int skip(int);
    descriptor: (I)I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=2
        start local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
        start local 1 // int n
         0: .line 725
            aload 0 /* this */
            iconst_m1
            putfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.lastOffset:I
         1: .line 726
            iconst_0
            istore 2 /* skipped */
        start local 2 // int skipped
         2: .line 727
            goto 8
         3: .line 728
      StackMap locals: int
      StackMap stack:
            iload 2 /* skipped */
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.a:[Lit/unimi/dsi/fastutil/doubles/DoubleIterator;
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.offset:I
            aaload
            iload 1 /* n */
            iload 2 /* skipped */
            isub
            invokeinterface it.unimi.dsi.fastutil.doubles.DoubleIterator.skip:(I)I
            iadd
            istore 2 /* skipped */
         4: .line 729
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.a:[Lit/unimi/dsi/fastutil/doubles/DoubleIterator;
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.offset:I
            aaload
            invokeinterface it.unimi.dsi.fastutil.doubles.DoubleIterator.hasNext:()Z
            ifeq 6
         5: .line 730
            goto 9
         6: .line 731
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            dup
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.length:I
            iconst_1
            isub
            putfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.length:I
         7: .line 732
            aload 0 /* this */
            dup
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.offset:I
            iconst_1
            iadd
            putfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.offset:I
         8: .line 727
      StackMap locals:
      StackMap stack:
            iload 2 /* skipped */
            iload 1 /* n */
            if_icmpge 9
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator.length:I
            ifne 3
         9: .line 734
      StackMap locals:
      StackMap stack:
            iload 2 /* skipped */
            ireturn
        end local 2 // int skipped
        end local 1 // int n
        end local 0 // it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0   10     0     this  Lit/unimi/dsi/fastutil/doubles/DoubleIterators$IteratorConcatenator;
            0   10     1        n  I
            2   10     2  skipped  I
    MethodParameters:
      Name  Flags
      n     

  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.doubles.DoubleIterator.next:()Ljava/lang/Double;
            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.DoubleConsumer
            invokeinterface java.util.PrimitiveIterator$OfDouble.forEachRemaining:(Ljava/util/function/DoubleConsumer;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "DoubleIterators.java"
NestHost: it.unimi.dsi.fastutil.doubles.DoubleIterators
InnerClasses:
  private IteratorConcatenator = it.unimi.dsi.fastutil.doubles.DoubleIterators$IteratorConcatenator of it.unimi.dsi.fastutil.doubles.DoubleIterators
  public abstract OfDouble = java.util.PrimitiveIterator$OfDouble of java.util.PrimitiveIterator