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 
public class it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection extends it.unimi.dsi.fastutil.longs.AbstractLongCollection implements java.io.Serializable
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection
  super_class: it.unimi.dsi.fastutil.longs.AbstractLongCollection
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: -7046029254386353129

  protected final it.unimi.dsi.fastutil.longs.LongIterable iterable;
    descriptor: Lit/unimi/dsi/fastutil/longs/LongIterable;
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL

  protected void <init>(it.unimi.dsi.fastutil.longs.LongIterable);
    descriptor: (Lit/unimi/dsi/fastutil/longs/LongIterable;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection this
        start local 1 // it.unimi.dsi.fastutil.longs.LongIterable iterable
         0: .line 454
            aload 0 /* this */
            invokespecial it.unimi.dsi.fastutil.longs.AbstractLongCollection.<init>:()V
         1: .line 455
            aload 1 /* iterable */
            ifnonnull 3
         2: .line 456
            new java.lang.NullPointerException
            dup
            invokespecial java.lang.NullPointerException.<init>:()V
            athrow
         3: .line 457
      StackMap locals: it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection it.unimi.dsi.fastutil.longs.LongIterable
      StackMap stack:
            aload 0 /* this */
            aload 1 /* iterable */
            putfield it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection.iterable:Lit/unimi/dsi/fastutil/longs/LongIterable;
         4: .line 458
            return
        end local 1 // it.unimi.dsi.fastutil.longs.LongIterable iterable
        end local 0 // it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    5     0      this  Lit/unimi/dsi/fastutil/longs/LongCollections$IterableCollection;
            0    5     1  iterable  Lit/unimi/dsi/fastutil/longs/LongIterable;
    MethodParameters:
          Name  Flags
      iterable  final

  public int size();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection this
         0: .line 461
            iconst_0
            istore 1 /* c */
        start local 1 // int c
         1: .line 462
            aload 0 /* this */
            invokevirtual it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection.iterator:()Lit/unimi/dsi/fastutil/longs/LongIterator;
            astore 2 /* iterator */
        start local 2 // it.unimi.dsi.fastutil.longs.LongIterator iterator
         2: .line 463
            goto 5
         3: .line 464
      StackMap locals: int it.unimi.dsi.fastutil.longs.LongIterator
      StackMap stack:
            aload 2 /* iterator */
            invokeinterface it.unimi.dsi.fastutil.longs.LongIterator.nextLong:()J
            pop2
         4: .line 465
            iinc 1 /* c */ 1
         5: .line 463
      StackMap locals:
      StackMap stack:
            aload 2 /* iterator */
            invokeinterface it.unimi.dsi.fastutil.longs.LongIterator.hasNext:()Z
            ifne 3
         6: .line 467
            iload 1 /* c */
            ireturn
        end local 2 // it.unimi.dsi.fastutil.longs.LongIterator iterator
        end local 1 // int c
        end local 0 // it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    7     0      this  Lit/unimi/dsi/fastutil/longs/LongCollections$IterableCollection;
            1    7     1         c  I
            2    7     2  iterator  Lit/unimi/dsi/fastutil/longs/LongIterator;

  public boolean isEmpty();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection this
         0: .line 471
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection.iterable:Lit/unimi/dsi/fastutil/longs/LongIterable;
            invokeinterface it.unimi.dsi.fastutil.longs.LongIterable.iterator:()Lit/unimi/dsi/fastutil/longs/LongIterator;
            invokeinterface it.unimi.dsi.fastutil.longs.LongIterator.hasNext:()Z
            ifeq 1
            iconst_0
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_1
      StackMap locals:
      StackMap stack: int
         2: ireturn
        end local 0 // it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lit/unimi/dsi/fastutil/longs/LongCollections$IterableCollection;

  public it.unimi.dsi.fastutil.longs.LongIterator iterator();
    descriptor: ()Lit/unimi/dsi/fastutil/longs/LongIterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection this
         0: .line 475
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection.iterable:Lit/unimi/dsi/fastutil/longs/LongIterable;
            invokeinterface it.unimi.dsi.fastutil.longs.LongIterable.iterator:()Lit/unimi/dsi/fastutil/longs/LongIterator;
            areturn
        end local 0 // it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/longs/LongCollections$IterableCollection;

  public java.util.Iterator iterator();
    descriptor: ()Ljava/util/Iterator;
    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.LongCollections$IterableCollection.iterator:()Lit/unimi/dsi/fastutil/longs/LongIterator;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "LongCollections.java"
NestHost: it.unimi.dsi.fastutil.longs.LongCollections
InnerClasses:
  public IterableCollection = it.unimi.dsi.fastutil.longs.LongCollections$IterableCollection of it.unimi.dsi.fastutil.longs.LongCollections