https://github.com/eclipse/eclipse-collections/eclipse-collections: Eclipse Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
  • Craig P. Motlin
  • Donald Raab
  • Mohammad A. Rezaei
  • Hiroshi Ito
  • Nikhil J. Nanivadekar
  • Sirisha Pratha 
public final class org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator implements java.util.Spliterator$OfDouble
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator
  super_class: java.lang.Object
{
  private final double elem;
    descriptor: D
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private boolean visited;
    descriptor: Z
    flags: (0x0002) ACC_PRIVATE

  public void <init>(double);
    descriptor: (D)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator this
        start local 1 // double elem
         0: .line 27
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 25
            aload 0 /* this */
            iconst_0
            putfield org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator.visited:Z
         2: .line 29
            aload 0 /* this */
            dload 1 /* elem */
            putfield org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator.elem:D
         3: .line 30
            return
        end local 1 // double elem
        end local 0 // org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/eclipse/collections/impl/stream/primitive/DoubleSingletonSpliterator;
            0    4     1  elem  D
    MethodParameters:
      Name  Flags
      elem  

  public java.util.Spliterator$OfDouble trySplit();
    descriptor: ()Ljava/util/Spliterator$OfDouble;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator this
         0: .line 35
            aconst_null
            areturn
        end local 0 // org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/stream/primitive/DoubleSingletonSpliterator;

  public long estimateSize();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator this
         0: .line 41
            aload 0 /* this */
            getfield org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator.visited:Z
            ifeq 2
         1: .line 43
            lconst_0
            lreturn
         2: .line 45
      StackMap locals:
      StackMap stack:
            lconst_1
            lreturn
        end local 0 // org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/eclipse/collections/impl/stream/primitive/DoubleSingletonSpliterator;

  public int characteristics();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator this
         0: .line 51
            sipush 17489
            ireturn
        end local 0 // org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/stream/primitive/DoubleSingletonSpliterator;

  public boolean tryAdvance(java.util.function.DoubleConsumer);
    descriptor: (Ljava/util/function/DoubleConsumer;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator this
        start local 1 // java.util.function.DoubleConsumer action
         0: .line 57
            aload 0 /* this */
            getfield org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator.visited:Z
            ifeq 2
         1: .line 59
            iconst_0
            ireturn
         2: .line 62
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iconst_1
            putfield org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator.visited:Z
         3: .line 63
            aload 1 /* action */
            aload 0 /* this */
            getfield org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator.elem:D
            invokeinterface java.util.function.DoubleConsumer.accept:(D)V
         4: .line 64
            iconst_1
            ireturn
        end local 1 // java.util.function.DoubleConsumer action
        end local 0 // org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    5     0    this  Lorg/eclipse/collections/impl/stream/primitive/DoubleSingletonSpliterator;
            0    5     1  action  Ljava/util/function/DoubleConsumer;
    MethodParameters:
        Name  Flags
      action  

  public boolean tryAdvance(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    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
            invokevirtual org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator.tryAdvance:(Ljava/util/function/DoubleConsumer;)Z
            ireturn
      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.Spliterator$OfDouble.forEachRemaining:(Ljava/util/function/DoubleConsumer;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public java.util.Spliterator trySplit();
    descriptor: ()Ljava/util/Spliterator;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator.trySplit:()Ljava/util/Spliterator$OfDouble;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public java.util.Spliterator$OfPrimitive trySplit();
    descriptor: ()Ljava/util/Spliterator$OfPrimitive;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual org.eclipse.collections.impl.stream.primitive.DoubleSingletonSpliterator.trySplit:()Ljava/util/Spliterator$OfDouble;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "DoubleSingletonSpliterator.java"
InnerClasses:
  public abstract OfDouble = java.util.Spliterator$OfDouble of java.util.Spliterator
  public abstract OfPrimitive = java.util.Spliterator$OfPrimitive of java.util.Spliterator