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 final class it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps
  super_class: java.lang.Object
{
  public static final it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$EmptySortedMap EMPTY_MAP;
    descriptor: Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMaps$EmptySortedMap;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 202
            new it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$EmptySortedMap
            dup
            invokespecial it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$EmptySortedMap.<init>:()V
            putstatic it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps.EMPTY_MAP:Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMaps$EmptySortedMap;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps this
         0: .line 33
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 34
            return
        end local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMaps;

  public static java.util.Comparator<? super java.util.Map$Entry<java.lang.Long, ?>> entryComparator(it.unimi.dsi.fastutil.longs.LongComparator);
    descriptor: (Lit/unimi/dsi/fastutil/longs/LongComparator;)Ljava/util/Comparator;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.LongComparator comparator
         0: .line 43
            aload 0 /* comparator */
            invokedynamic compare(Lit/unimi/dsi/fastutil/longs/LongComparator;)Ljava/util/Comparator;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Ljava/lang/Object;Ljava/lang/Object;)I
                  it/unimi/dsi/fastutil/longs/Long2ByteSortedMaps.lambda$0(Lit/unimi/dsi/fastutil/longs/LongComparator;Ljava/util/Map$Entry;Ljava/util/Map$Entry;)I (6)
                  (Ljava/util/Map$Entry;Ljava/util/Map$Entry;)I
            areturn
        end local 0 // it.unimi.dsi.fastutil.longs.LongComparator comparator
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    1     0  comparator  Lit/unimi/dsi/fastutil/longs/LongComparator;
    Signature: (Lit/unimi/dsi/fastutil/longs/LongComparator;)Ljava/util/Comparator<-Ljava/util/Map$Entry<Ljava/lang/Long;*>;>;
    MethodParameters:
            Name  Flags
      comparator  final

  public static it.unimi.dsi.fastutil.objects.ObjectBidirectionalIterator<it.unimi.dsi.fastutil.longs.Long2ByteMap$Entry> fastIterator(it.unimi.dsi.fastutil.longs.Long2ByteSortedMap);
    descriptor: (Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;)Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterator;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=2, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMap map
         0: .line 60
            aload 0 /* map */
            invokeinterface it.unimi.dsi.fastutil.longs.Long2ByteSortedMap.long2ByteEntrySet:()Lit/unimi/dsi/fastutil/objects/ObjectSortedSet;
            astore 1 /* entries */
        start local 1 // it.unimi.dsi.fastutil.objects.ObjectSortedSet entries
         1: .line 61
            aload 1 /* entries */
            instanceof it.unimi.dsi.fastutil.longs.Long2ByteSortedMap$FastSortedEntrySet
            ifeq 3
         2: .line 62
            aload 1 /* entries */
            checkcast it.unimi.dsi.fastutil.longs.Long2ByteSortedMap$FastSortedEntrySet
            invokeinterface it.unimi.dsi.fastutil.longs.Long2ByteSortedMap$FastSortedEntrySet.fastIterator:()Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterator;
            goto 4
         3: .line 63
      StackMap locals: it.unimi.dsi.fastutil.objects.ObjectSortedSet
      StackMap stack:
            aload 1 /* entries */
            invokeinterface it.unimi.dsi.fastutil.objects.ObjectSortedSet.iterator:()Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterator;
         4: .line 61
      StackMap locals:
      StackMap stack: it.unimi.dsi.fastutil.objects.ObjectBidirectionalIterator
            areturn
        end local 1 // it.unimi.dsi.fastutil.objects.ObjectSortedSet entries
        end local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMap map
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    5     0      map  Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
            1    5     1  entries  Lit/unimi/dsi/fastutil/objects/ObjectSortedSet<Lit/unimi/dsi/fastutil/longs/Long2ByteMap$Entry;>;
    Signature: (Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;)Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterator<Lit/unimi/dsi/fastutil/longs/Long2ByteMap$Entry;>;
    MethodParameters:
      Name  Flags
      map   

  public static it.unimi.dsi.fastutil.objects.ObjectBidirectionalIterable<it.unimi.dsi.fastutil.longs.Long2ByteMap$Entry> fastIterable(it.unimi.dsi.fastutil.longs.Long2ByteSortedMap);
    descriptor: (Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;)Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterable;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=2, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMap map
         0: .line 79
            aload 0 /* map */
            invokeinterface it.unimi.dsi.fastutil.longs.Long2ByteSortedMap.long2ByteEntrySet:()Lit/unimi/dsi/fastutil/objects/ObjectSortedSet;
            astore 1 /* entries */
        start local 1 // it.unimi.dsi.fastutil.objects.ObjectSortedSet entries
         1: .line 80
            aload 1 /* entries */
            instanceof it.unimi.dsi.fastutil.longs.Long2ByteSortedMap$FastSortedEntrySet
            ifeq 3
            aload 1 /* entries */
            invokedynamic iterator(Lit/unimi/dsi/fastutil/objects/ObjectSortedSet;)Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterable;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.altMetafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;[Ljava/lang/Object;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  ()Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterator;
                  it/unimi/dsi/fastutil/longs/Long2ByteSortedMaps.lambda$2(Lit/unimi/dsi/fastutil/objects/ObjectSortedSet;)Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterator; (6)
                  ()Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterator;
                  4
                  2
                  ()Lit/unimi/dsi/fastutil/objects/ObjectIterator;
                  ()Ljava/util/Iterator;
         2: .line 81
            goto 4
         3: .line 82
      StackMap locals: it.unimi.dsi.fastutil.objects.ObjectSortedSet
      StackMap stack:
            aload 1 /* entries */
         4: .line 80
      StackMap locals:
      StackMap stack: it.unimi.dsi.fastutil.objects.ObjectBidirectionalIterable
            areturn
        end local 1 // it.unimi.dsi.fastutil.objects.ObjectSortedSet entries
        end local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMap map
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    5     0      map  Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
            1    5     1  entries  Lit/unimi/dsi/fastutil/objects/ObjectSortedSet<Lit/unimi/dsi/fastutil/longs/Long2ByteMap$Entry;>;
    Signature: (Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;)Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterable<Lit/unimi/dsi/fastutil/longs/Long2ByteMap$Entry;>;
    MethodParameters:
      Name  Flags
      map   

  public static it.unimi.dsi.fastutil.longs.Long2ByteSortedMap singleton(java.lang.Long, java.lang.Byte);
    descriptor: (Ljava/lang/Long;Ljava/lang/Byte;)Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // java.lang.Long key
        start local 1 // java.lang.Byte value
         0: .line 353
            new it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$Singleton
            dup
            aload 0 /* key */
            invokevirtual java.lang.Long.longValue:()J
            aload 1 /* value */
            invokevirtual java.lang.Byte.byteValue:()B
            invokespecial it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$Singleton.<init>:(JB)V
            areturn
        end local 1 // java.lang.Byte value
        end local 0 // java.lang.Long key
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0    key  Ljava/lang/Long;
            0    1     1  value  Ljava/lang/Byte;
    MethodParameters:
       Name  Flags
      key    final
      value  

  public static it.unimi.dsi.fastutil.longs.Long2ByteSortedMap singleton(java.lang.Long, java.lang.Byte, it.unimi.dsi.fastutil.longs.LongComparator);
    descriptor: (Ljava/lang/Long;Ljava/lang/Byte;Lit/unimi/dsi/fastutil/longs/LongComparator;)Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=6, locals=3, args_size=3
        start local 0 // java.lang.Long key
        start local 1 // java.lang.Byte value
        start local 2 // it.unimi.dsi.fastutil.longs.LongComparator comparator
         0: .line 373
            new it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$Singleton
            dup
            aload 0 /* key */
            invokevirtual java.lang.Long.longValue:()J
            aload 1 /* value */
            invokevirtual java.lang.Byte.byteValue:()B
            aload 2 /* comparator */
            invokespecial it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$Singleton.<init>:(JBLit/unimi/dsi/fastutil/longs/LongComparator;)V
            areturn
        end local 2 // it.unimi.dsi.fastutil.longs.LongComparator comparator
        end local 1 // java.lang.Byte value
        end local 0 // java.lang.Long key
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    1     0         key  Ljava/lang/Long;
            0    1     1       value  Ljava/lang/Byte;
            0    1     2  comparator  Lit/unimi/dsi/fastutil/longs/LongComparator;
    MethodParameters:
            Name  Flags
      key         final
      value       
      comparator  

  public static it.unimi.dsi.fastutil.longs.Long2ByteSortedMap singleton(long, byte);
    descriptor: (JB)Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=3, args_size=2
        start local 0 // long key
        start local 2 // byte value
         0: .line 391
            new it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$Singleton
            dup
            lload 0 /* key */
            iload 2 /* value */
            invokespecial it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$Singleton.<init>:(JB)V
            areturn
        end local 2 // byte value
        end local 0 // long key
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0    key  J
            0    1     2  value  B
    MethodParameters:
       Name  Flags
      key    final
      value  final

  public static it.unimi.dsi.fastutil.longs.Long2ByteSortedMap singleton(long, byte, it.unimi.dsi.fastutil.longs.LongComparator);
    descriptor: (JBLit/unimi/dsi/fastutil/longs/LongComparator;)Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=6, locals=4, args_size=3
        start local 0 // long key
        start local 2 // byte value
        start local 3 // it.unimi.dsi.fastutil.longs.LongComparator comparator
         0: .line 411
            new it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$Singleton
            dup
            lload 0 /* key */
            iload 2 /* value */
            aload 3 /* comparator */
            invokespecial it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$Singleton.<init>:(JBLit/unimi/dsi/fastutil/longs/LongComparator;)V
            areturn
        end local 3 // it.unimi.dsi.fastutil.longs.LongComparator comparator
        end local 2 // byte value
        end local 0 // long key
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    1     0         key  J
            0    1     2       value  B
            0    1     3  comparator  Lit/unimi/dsi/fastutil/longs/LongComparator;
    MethodParameters:
            Name  Flags
      key         final
      value       final
      comparator  

  public static it.unimi.dsi.fastutil.longs.Long2ByteSortedMap synchronize(it.unimi.dsi.fastutil.longs.Long2ByteSortedMap);
    descriptor: (Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;)Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMap m
         0: .line 546
            new it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$SynchronizedSortedMap
            dup
            aload 0 /* m */
            invokespecial it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$SynchronizedSortedMap.<init>:(Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;)V
            areturn
        end local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMap m
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0     m  Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
    MethodParameters:
      Name  Flags
      m     final

  public static it.unimi.dsi.fastutil.longs.Long2ByteSortedMap synchronize(it.unimi.dsi.fastutil.longs.Long2ByteSortedMap, java.lang.Object);
    descriptor: (Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;Ljava/lang/Object;)Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMap m
        start local 1 // java.lang.Object sync
         0: .line 561
            new it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$SynchronizedSortedMap
            dup
            aload 0 /* m */
            aload 1 /* sync */
            invokespecial it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$SynchronizedSortedMap.<init>:(Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;Ljava/lang/Object;)V
            areturn
        end local 1 // java.lang.Object sync
        end local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMap m
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0     m  Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
            0    1     1  sync  Ljava/lang/Object;
    MethodParameters:
      Name  Flags
      m     final
      sync  final

  public static it.unimi.dsi.fastutil.longs.Long2ByteSortedMap unmodifiable(it.unimi.dsi.fastutil.longs.Long2ByteSortedMap);
    descriptor: (Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;)Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMap m
         0: .line 682
            new it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$UnmodifiableSortedMap
            dup
            aload 0 /* m */
            invokespecial it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$UnmodifiableSortedMap.<init>:(Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;)V
            areturn
        end local 0 // it.unimi.dsi.fastutil.longs.Long2ByteSortedMap m
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0     m  Lit/unimi/dsi/fastutil/longs/Long2ByteSortedMap;
    MethodParameters:
      Name  Flags
      m     final

  private static int lambda$0(it.unimi.dsi.fastutil.longs.LongComparator, java.util.Map$Entry, java.util.Map$Entry);
    descriptor: (Lit/unimi/dsi/fastutil/longs/LongComparator;Ljava/util/Map$Entry;Ljava/util/Map$Entry;)I
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=5, locals=3, args_size=3
        start local 1 // java.util.Map$Entry x
        start local 2 // java.util.Map$Entry y
         0: .line 43
            aload 0
            aload 1 /* x */
            invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
            checkcast java.lang.Long
            invokevirtual java.lang.Long.longValue:()J
         1: .line 44
            aload 2 /* y */
            invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
            checkcast java.lang.Long
            invokevirtual java.lang.Long.longValue:()J
         2: .line 43
            invokeinterface it.unimi.dsi.fastutil.longs.LongComparator.compare:(JJ)I
         3: .line 44
            ireturn
        end local 2 // java.util.Map$Entry y
        end local 1 // java.util.Map$Entry x
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     1     x  Ljava/util/Map$Entry<Ljava/lang/Long;*>;
            0    4     2     y  Ljava/util/Map$Entry<Ljava/lang/Long;*>;

  private static it.unimi.dsi.fastutil.objects.ObjectBidirectionalIterator<it.unimi.dsi.fastutil.longs.Long2ByteMap$Entry> lambda$2(it.unimi.dsi.fastutil.objects.ObjectSortedSet<it.unimi.dsi.fastutil.longs.Long2ByteMap$Entry>);
    descriptor: (Lit/unimi/dsi/fastutil/objects/ObjectSortedSet;)Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterator;
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            checkcast it.unimi.dsi.fastutil.longs.Long2ByteSortedMap$FastSortedEntrySet
            invokeinterface it.unimi.dsi.fastutil.longs.Long2ByteSortedMap$FastSortedEntrySet.fastIterator:()Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterator;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    Signature: (Lit/unimi/dsi/fastutil/objects/ObjectSortedSet<Lit/unimi/dsi/fastutil/longs/Long2ByteMap$Entry;>;)Lit/unimi/dsi/fastutil/objects/ObjectBidirectionalIterator<Lit/unimi/dsi/fastutil/longs/Long2ByteMap$Entry;>;
}
SourceFile: "Long2ByteSortedMaps.java"
NestMembers:
  it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$EmptySortedMap  it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$Singleton  it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$SynchronizedSortedMap  it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$UnmodifiableSortedMap
InnerClasses:
  public abstract Entry = it.unimi.dsi.fastutil.longs.Long2ByteMap$Entry of it.unimi.dsi.fastutil.longs.Long2ByteMap
  public abstract FastSortedEntrySet = it.unimi.dsi.fastutil.longs.Long2ByteSortedMap$FastSortedEntrySet of it.unimi.dsi.fastutil.longs.Long2ByteSortedMap
  public EmptySortedMap = it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$EmptySortedMap of it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps
  public Singleton = it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$Singleton of it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps
  public SynchronizedSortedMap = it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$SynchronizedSortedMap of it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps
  public UnmodifiableSortedMap = it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps$UnmodifiableSortedMap of it.unimi.dsi.fastutil.longs.Long2ByteSortedMaps
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles
  public abstract Entry = java.util.Map$Entry of java.util.Map