final class org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView<K, V> extends org.ehcache.impl.internal.concurrent.ConcurrentHashMap$CollectionView<K, V, java.util.Map$Entry<K, V>> implements java.util.Set<java.util.Map$Entry<K, V>>, java.io.Serializable
minor version: 0
major version: 59
flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
this_class: org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView
super_class: org.ehcache.impl.internal.concurrent.ConcurrentHashMap$CollectionView
{
private static final long serialVersionUID;
descriptor: J
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
ConstantValue: 2249069246763182397
void <init>(org.ehcache.impl.internal.concurrent.ConcurrentHashMap<K, V>);
descriptor: (Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;)V
flags: (0x0000)
Code:
stack=2, locals=2, args_size=2
start local 0 start local 1 0: aload 0
aload 1
invokespecial org.ehcache.impl.internal.concurrent.ConcurrentHashMap$CollectionView.<init>:(Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;)V
return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$EntrySetView<TK;TV;>;
0 1 1 map Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap<TK;TV;>;
Signature: (Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap<TK;TV;>;)V
MethodParameters:
Name Flags
map
public boolean contains(java.lang.Object);
descriptor: (Ljava/lang/Object;)Z
flags: (0x0001) ACC_PUBLIC
Code:
stack=2, locals=6, args_size=2
start local 0 start local 1 0: aload 1
instanceof java.util.Map$Entry
ifeq 10
1: aload 1
checkcast java.util.Map$Entry
dup
astore 5
start local 5 2: invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
dup
astore 2
start local 2 3: ifnull 10
4: aload 0
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.map:Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;
aload 2
invokevirtual org.ehcache.impl.internal.concurrent.ConcurrentHashMap.get:(Ljava/lang/Object;)Ljava/lang/Object;
dup
astore 4
start local 4 5: ifnull 10
6: aload 5
invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
dup
astore 3
start local 3 7: ifnull 10
8: aload 3
aload 4
if_acmpeq 9
aload 3
aload 4
invokevirtual java.lang.Object.equals:(Ljava/lang/Object;)Z
ifeq 10
end local 5 end local 4 end local 3 end local 2 9: StackMap locals:
StackMap stack:
iconst_1
ireturn
StackMap locals:
StackMap stack:
10: iconst_0
ireturn
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 11 0 this Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$EntrySetView<TK;TV;>;
0 11 1 o Ljava/lang/Object;
3 9 2 k Ljava/lang/Object;
7 9 3 v Ljava/lang/Object;
5 9 4 r Ljava/lang/Object;
2 9 5 e Ljava/util/Map$Entry<**>;
MethodParameters:
Name Flags
o
public boolean remove(java.lang.Object);
descriptor: (Ljava/lang/Object;)Z
flags: (0x0001) ACC_PUBLIC
Code:
stack=3, locals=5, args_size=2
start local 0 start local 1 0: aload 1
instanceof java.util.Map$Entry
ifeq 8
1: aload 1
checkcast java.util.Map$Entry
dup
astore 4
start local 4 2: invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
dup
astore 2
start local 2 3: ifnull 8
4: aload 4
invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
dup
astore 3
start local 3 5: ifnull 8
6: aload 0
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.map:Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;
aload 2
aload 3
invokevirtual org.ehcache.impl.internal.concurrent.ConcurrentHashMap.remove:(Ljava/lang/Object;Ljava/lang/Object;)Z
ifeq 8
end local 4 end local 3 end local 2 7: iconst_1
ireturn
StackMap locals:
StackMap stack:
8: iconst_0
ireturn
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 9 0 this Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$EntrySetView<TK;TV;>;
0 9 1 o Ljava/lang/Object;
3 7 2 k Ljava/lang/Object;
5 7 3 v Ljava/lang/Object;
2 7 4 e Ljava/util/Map$Entry<**>;
MethodParameters:
Name Flags
o
public java.util.Iterator<java.util.Map$Entry<K, V>> iterator();
descriptor: ()Ljava/util/Iterator;
flags: (0x0001) ACC_PUBLIC
Code:
stack=7, locals=4, args_size=1
start local 0 0: aload 0
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.map:Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;
astore 1
start local 1 1: aload 1
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap.table:[Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;
dup
astore 2
start local 2 2: ifnonnull 3
iconst_0
goto 4
StackMap locals: org.ehcache.impl.internal.concurrent.ConcurrentHashMap org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node[]
StackMap stack:
3: aload 2
arraylength
StackMap locals:
StackMap stack: int
4: istore 3
start local 3 5: new org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntryIterator
dup
aload 2
iload 3
iconst_0
iload 3
aload 1
invokespecial org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntryIterator.<init>:([Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;IIILorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;)V
areturn
end local 3 end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 6 0 this Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$EntrySetView<TK;TV;>;
1 6 1 m Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap<TK;TV;>;
2 6 2 t [Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;
5 6 3 f I
Signature: ()Ljava/util/Iterator<Ljava/util/Map$Entry<TK;TV;>;>;
public boolean add(java.util.Map$Entry<K, V>);
descriptor: (Ljava/util/Map$Entry;)Z
flags: (0x0001) ACC_PUBLIC
Code:
stack=4, locals=2, args_size=2
start local 0 start local 1 0: aload 0
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.map:Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;
aload 1
invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
aload 1
invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
iconst_0
invokevirtual org.ehcache.impl.internal.concurrent.ConcurrentHashMap.putVal:(Ljava/lang/Object;Ljava/lang/Object;Z)Ljava/lang/Object;
ifnonnull 1
iconst_1
ireturn
StackMap locals:
StackMap stack:
1: iconst_0
ireturn
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 2 0 this Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$EntrySetView<TK;TV;>;
0 2 1 e Ljava/util/Map$Entry<TK;TV;>;
Signature: (Ljava/util/Map$Entry<TK;TV;>;)Z
MethodParameters:
Name Flags
e
public boolean addAll(java.util.Collection<? extends java.util.Map$Entry<K, V>>);
descriptor: (Ljava/util/Collection;)Z
flags: (0x0001) ACC_PUBLIC
Code:
stack=2, locals=5, args_size=2
start local 0 start local 1 0: iconst_0
istore 2
start local 2 1: aload 1
invokeinterface java.util.Collection.iterator:()Ljava/util/Iterator;
astore 4
goto 5
StackMap locals: org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView java.util.Collection int top java.util.Iterator
StackMap stack:
2: aload 4
invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
checkcast java.util.Map$Entry
astore 3
start local 3 3: aload 0
aload 3
invokevirtual org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.add:(Ljava/util/Map$Entry;)Z
ifeq 5
4: iconst_1
istore 2
end local 3 5: StackMap locals:
StackMap stack:
aload 4
invokeinterface java.util.Iterator.hasNext:()Z
ifne 2
6: iload 2
ireturn
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 7 0 this Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$EntrySetView<TK;TV;>;
0 7 1 c Ljava/util/Collection<+Ljava/util/Map$Entry<TK;TV;>;>;
1 7 2 added Z
3 5 3 e Ljava/util/Map$Entry<TK;TV;>;
Signature: (Ljava/util/Collection<+Ljava/util/Map$Entry<TK;TV;>;>;)Z
MethodParameters:
Name Flags
c
public boolean removeIf(java.util.function.Predicate<? super java.util.Map$Entry<K, V>>);
descriptor: (Ljava/util/function/Predicate;)Z
flags: (0x0001) ACC_PUBLIC
Code:
stack=2, locals=2, args_size=2
start local 0 start local 1 0: aload 0
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.map:Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;
aload 1
invokevirtual org.ehcache.impl.internal.concurrent.ConcurrentHashMap.removeEntryIf:(Ljava/util/function/Predicate;)Z
ireturn
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$EntrySetView<TK;TV;>;
0 1 1 filter Ljava/util/function/Predicate<-Ljava/util/Map$Entry<TK;TV;>;>;
Signature: (Ljava/util/function/Predicate<-Ljava/util/Map$Entry<TK;TV;>;>;)Z
MethodParameters:
Name Flags
filter
public final int hashCode();
descriptor: ()I
flags: (0x0011) ACC_PUBLIC, ACC_FINAL
Code:
stack=6, locals=5, args_size=1
start local 0 0: iconst_0
istore 1
start local 1 1: aload 0
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.map:Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap.table:[Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;
dup
astore 2
start local 2 2: ifnull 8
3: new org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Traverser
dup
aload 2
aload 2
arraylength
iconst_0
aload 2
arraylength
invokespecial org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Traverser.<init>:([Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;III)V
astore 3
start local 3 4: goto 6
start local 4 5: StackMap locals: org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView int org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node[] org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Traverser org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node
StackMap stack:
iload 1
aload 4
invokevirtual org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node.hashCode:()I
iadd
istore 1
end local 4 6: StackMap locals:
StackMap stack:
aload 3
invokevirtual org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Traverser.advance:()Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;
dup
astore 4
start local 4 7: ifnonnull 5
end local 4 end local 3 8: StackMap locals:
StackMap stack:
iload 1
ireturn
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 9 0 this Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$EntrySetView<TK;TV;>;
1 9 1 h I
2 9 2 t [Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;
4 8 3 it Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Traverser<TK;TV;>;
5 6 4 p Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node<TK;TV;>;
7 8 4 p Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node<TK;TV;>;
public final boolean equals(java.lang.Object);
descriptor: (Ljava/lang/Object;)Z
flags: (0x0011) ACC_PUBLIC, ACC_FINAL
Code:
stack=2, locals=3, args_size=2
start local 0 start local 1 0: aload 1
instanceof java.util.Set
ifeq 5
1: aload 1
checkcast java.util.Set
dup
astore 2
start local 2 2: aload 0
if_acmpeq 4
3: aload 0
aload 2
invokevirtual org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.containsAll:(Ljava/util/Collection;)Z
ifeq 5
aload 2
aload 0
invokeinterface java.util.Set.containsAll:(Ljava/util/Collection;)Z
ifeq 5
end local 2 4: StackMap locals:
StackMap stack:
iconst_1
ireturn
StackMap locals:
StackMap stack:
5: iconst_0
ireturn
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 6 0 this Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$EntrySetView<TK;TV;>;
0 6 1 o Ljava/lang/Object;
2 4 2 c Ljava/util/Set<*>;
MethodParameters:
Name Flags
o
public java.util.Spliterator<java.util.Map$Entry<K, V>> spliterator();
descriptor: ()Ljava/util/Spliterator;
flags: (0x0001) ACC_PUBLIC
Code:
stack=10, locals=6, args_size=1
start local 0 0: aload 0
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.map:Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;
astore 2
start local 2 1: aload 2
invokevirtual org.ehcache.impl.internal.concurrent.ConcurrentHashMap.sumCount:()J
lstore 3
start local 3 2: aload 2
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap.table:[Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;
dup
astore 1
start local 1 3: ifnonnull 4
iconst_0
goto 5
StackMap locals: org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node[] org.ehcache.impl.internal.concurrent.ConcurrentHashMap long
StackMap stack:
4: aload 1
arraylength
StackMap locals:
StackMap stack: int
5: istore 5
start local 5 6: new org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySpliterator
dup
aload 1
iload 5
iconst_0
iload 5
lload 3
lconst_0
lcmp
ifge 7
lconst_0
goto 8
StackMap locals: org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node[] org.ehcache.impl.internal.concurrent.ConcurrentHashMap long int
StackMap stack: new 6 new 6 org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node[] int int int
7: lload 3
StackMap locals: org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node[] org.ehcache.impl.internal.concurrent.ConcurrentHashMap long int
StackMap stack: new 6 new 6 org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node[] int int int long
8: aload 2
invokespecial org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySpliterator.<init>:([Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;IIIJLorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;)V
areturn
end local 5 end local 3 end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 9 0 this Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$EntrySetView<TK;TV;>;
3 9 1 t [Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;
1 9 2 m Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap<TK;TV;>;
2 9 3 n J
6 9 5 f I
Signature: ()Ljava/util/Spliterator<Ljava/util/Map$Entry<TK;TV;>;>;
public void forEach(java.util.function.Consumer<? super java.util.Map$Entry<K, V>>);
descriptor: (Ljava/util/function/Consumer;)V
flags: (0x0001) ACC_PUBLIC
Code:
stack=6, locals=5, args_size=2
start local 0 start local 1 0: aload 1
ifnonnull 1
new java.lang.NullPointerException
dup
invokespecial java.lang.NullPointerException.<init>:()V
athrow
1: StackMap locals:
StackMap stack:
aload 0
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.map:Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap.table:[Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;
dup
astore 2
start local 2 2: ifnull 8
3: new org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Traverser
dup
aload 2
aload 2
arraylength
iconst_0
aload 2
arraylength
invokespecial org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Traverser.<init>:([Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;III)V
astore 3
start local 3 4: goto 6
start local 4 5: StackMap locals: org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node[] org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Traverser org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node
StackMap stack:
aload 1
new org.ehcache.impl.internal.concurrent.ConcurrentHashMap$MapEntry
dup
aload 4
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node.key:Ljava/lang/Object;
aload 4
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node.val:Ljava/lang/Object;
aload 0
getfield org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.map:Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;
invokespecial org.ehcache.impl.internal.concurrent.ConcurrentHashMap$MapEntry.<init>:(Ljava/lang/Object;Ljava/lang/Object;Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap;)V
invokeinterface java.util.function.Consumer.accept:(Ljava/lang/Object;)V
end local 4 6: StackMap locals:
StackMap stack:
aload 3
invokevirtual org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Traverser.advance:()Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;
dup
astore 4
start local 4 7: ifnonnull 5
end local 4 end local 3 8: StackMap locals:
StackMap stack:
return
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 9 0 this Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$EntrySetView<TK;TV;>;
0 9 1 action Ljava/util/function/Consumer<-Ljava/util/Map$Entry<TK;TV;>;>;
2 9 2 t [Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node;
4 8 3 it Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Traverser<TK;TV;>;
5 6 4 p Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node<TK;TV;>;
7 8 4 p Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$Node<TK;TV;>;
Signature: (Ljava/util/function/Consumer<-Ljava/util/Map$Entry<TK;TV;>;>;)V
MethodParameters:
Name Flags
action
public boolean add(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: aload 0
aload 1
checkcast java.util.Map$Entry
invokevirtual org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView.add:(Ljava/util/Map$Entry;)Z
ireturn
LocalVariableTable:
Start End Slot Name Signature
}
Signature: <K:Ljava/lang/Object;V:Ljava/lang/Object;>Lorg/ehcache/impl/internal/concurrent/ConcurrentHashMap$CollectionView<TK;TV;Ljava/util/Map$Entry<TK;TV;>;>;Ljava/util/Set<Ljava/util/Map$Entry<TK;TV;>;>;Ljava/io/Serializable;
SourceFile: "ConcurrentHashMap.java"
NestHost: org.ehcache.impl.internal.concurrent.ConcurrentHashMap
InnerClasses:
public abstract Entry = java.util.Map$Entry of java.util.Map
abstract CollectionView = org.ehcache.impl.internal.concurrent.ConcurrentHashMap$CollectionView of org.ehcache.impl.internal.concurrent.ConcurrentHashMap
final EntryIterator = org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntryIterator of org.ehcache.impl.internal.concurrent.ConcurrentHashMap
final EntrySetView = org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySetView of org.ehcache.impl.internal.concurrent.ConcurrentHashMap
final EntrySpliterator = org.ehcache.impl.internal.concurrent.ConcurrentHashMap$EntrySpliterator of org.ehcache.impl.internal.concurrent.ConcurrentHashMap
final MapEntry = org.ehcache.impl.internal.concurrent.ConcurrentHashMap$MapEntry of org.ehcache.impl.internal.concurrent.ConcurrentHashMap
Node = org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Node of org.ehcache.impl.internal.concurrent.ConcurrentHashMap
Traverser = org.ehcache.impl.internal.concurrent.ConcurrentHashMap$Traverser of org.ehcache.impl.internal.concurrent.ConcurrentHashMap