http://openjdk.java.net/projects/code-tools/jmh/jmh-core/: The jmh is a Java harness for building, running, and analysing nano/micro/macro benchmarks written in Java and other languages targeting the JVM. (Oracle)
  • Aleksey Shipilev (Oracle/Sun, Red Hat)
  • Sergey Kuksenko (Oracle/Sun)
  • Anders Astrand (Oracle/BEA)
  • Staffan Friberg (Oracle/BEA)
  • Henrik Loef (Oracle/BEA) 
public class org.openjdk.jmh.util.DelegatingMultiset<T> implements org.openjdk.jmh.util.Multiset<T>, java.io.Serializable
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.openjdk.jmh.util.DelegatingMultiset
  super_class: java.lang.Object
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: -8454789908011859615

  protected final java.util.Map<T, java.lang.Long> map;
    descriptor: Ljava/util/Map;
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL
    Signature: Ljava/util/Map<TT;Ljava/lang/Long;>;

  private long size;
    descriptor: J
    flags: (0x0002) ACC_PRIVATE

  public void <init>(java.util.Map<T, java.lang.Long>);
    descriptor: (Ljava/util/Map;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.openjdk.jmh.util.DelegatingMultiset this
        start local 1 // java.util.Map map
         0: .line 38
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 39
            aload 0 /* this */
            aload 1 /* map */
            putfield org.openjdk.jmh.util.DelegatingMultiset.map:Ljava/util/Map;
         2: .line 40
            return
        end local 1 // java.util.Map map
        end local 0 // org.openjdk.jmh.util.DelegatingMultiset this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/openjdk/jmh/util/DelegatingMultiset<TT;>;
            0    3     1   map  Ljava/util/Map<TT;Ljava/lang/Long;>;
    Signature: (Ljava/util/Map<TT;Ljava/lang/Long;>;)V
    MethodParameters:
      Name  Flags
      map   

  public void add();
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.openjdk.jmh.util.DelegatingMultiset this
        start local 1 // java.lang.Object element
         0: .line 44
            aload 0 /* this */
            aload 1 /* element */
            lconst_1
            invokevirtual org.openjdk.jmh.util.DelegatingMultiset.add:(Ljava/lang/Object;J)V
         1: .line 45
            return
        end local 1 // java.lang.Object element
        end local 0 // org.openjdk.jmh.util.DelegatingMultiset this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    2     0     this  Lorg/openjdk/jmh/util/DelegatingMultiset<TT;>;
            0    2     1  element  TT;
    Signature: (TT;)V
    MethodParameters:
         Name  Flags
      element  

  public void add(T, );
    descriptor: (Ljava/lang/Object;J)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=5, args_size=3
        start local 0 // org.openjdk.jmh.util.DelegatingMultiset this
        start local 1 // java.lang.Object element
        start local 2 // long add
         0: .line 49
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.map:Ljava/util/Map;
            aload 1 /* element */
            invokeinterface java.util.Map.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.Long
            astore 4 /* count */
        start local 4 // java.lang.Long count
         1: .line 50
            aload 4 /* count */
            ifnonnull 3
         2: .line 51
            lconst_0
            invokestatic java.lang.Long.valueOf:(J)Ljava/lang/Long;
            astore 4 /* count */
         3: .line 53
      StackMap locals: java.lang.Long
      StackMap stack:
            aload 4 /* count */
            invokevirtual java.lang.Long.longValue:()J
            lload 2 /* add */
            ladd
            invokestatic java.lang.Long.valueOf:(J)Ljava/lang/Long;
            astore 4 /* count */
         4: .line 54
            aload 0 /* this */
            dup
            getfield org.openjdk.jmh.util.DelegatingMultiset.size:J
            lload 2 /* add */
            ladd
            putfield org.openjdk.jmh.util.DelegatingMultiset.size:J
         5: .line 55
            aload 4 /* count */
            invokevirtual java.lang.Long.longValue:()J
            lconst_0
            lcmp
            ifeq 8
         6: .line 56
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.map:Ljava/util/Map;
            aload 1 /* element */
            aload 4 /* count */
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         7: .line 57
            goto 9
         8: .line 58
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.map:Ljava/util/Map;
            aload 1 /* element */
            invokeinterface java.util.Map.remove:(Ljava/lang/Object;)Ljava/lang/Object;
            pop
         9: .line 60
      StackMap locals:
      StackMap stack:
            return
        end local 4 // java.lang.Long count
        end local 2 // long add
        end local 1 // java.lang.Object element
        end local 0 // org.openjdk.jmh.util.DelegatingMultiset this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0   10     0     this  Lorg/openjdk/jmh/util/DelegatingMultiset<TT;>;
            0   10     1  element  TT;
            0   10     2      add  J
            1   10     4    count  Ljava/lang/Long;
    Signature: (TT;J)V
    MethodParameters:
         Name  Flags
      element  
      add      

  public long count();
    descriptor: (Ljava/lang/Object;)J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // org.openjdk.jmh.util.DelegatingMultiset this
        start local 1 // java.lang.Object element
         0: .line 64
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.map:Ljava/util/Map;
            aload 1 /* element */
            invokeinterface java.util.Map.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.Long
            astore 2 /* count */
        start local 2 // java.lang.Long count
         1: .line 65
            aload 2 /* count */
            ifnonnull 2
            lconst_0
            goto 3
      StackMap locals: java.lang.Long
      StackMap stack:
         2: aload 2 /* count */
            invokevirtual java.lang.Long.longValue:()J
      StackMap locals:
      StackMap stack: long
         3: lreturn
        end local 2 // java.lang.Long count
        end local 1 // java.lang.Object element
        end local 0 // org.openjdk.jmh.util.DelegatingMultiset this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lorg/openjdk/jmh/util/DelegatingMultiset<TT;>;
            0    4     1  element  TT;
            1    4     2    count  Ljava/lang/Long;
    Signature: (TT;)J
    MethodParameters:
         Name  Flags
      element  

  public java.util.Collection<java.util.Map$Entry<T, java.lang.Long>> entrySet();
    descriptor: ()Ljava/util/Collection;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.openjdk.jmh.util.DelegatingMultiset this
         0: .line 70
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.map:Ljava/util/Map;
            invokeinterface java.util.Map.entrySet:()Ljava/util/Set;
            areturn
        end local 0 // org.openjdk.jmh.util.DelegatingMultiset this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/openjdk/jmh/util/DelegatingMultiset<TT;>;
    Signature: ()Ljava/util/Collection<Ljava/util/Map$Entry<TT;Ljava/lang/Long;>;>;

  public boolean isEmpty();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.openjdk.jmh.util.DelegatingMultiset this
         0: .line 75
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.map:Ljava/util/Map;
            invokeinterface java.util.Map.isEmpty:()Z
            ireturn
        end local 0 // org.openjdk.jmh.util.DelegatingMultiset this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/openjdk/jmh/util/DelegatingMultiset<TT;>;

  public long size();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.openjdk.jmh.util.DelegatingMultiset this
         0: .line 80
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.size:J
            lreturn
        end local 0 // org.openjdk.jmh.util.DelegatingMultiset this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/openjdk/jmh/util/DelegatingMultiset<TT;>;

  public java.util.Collection<T> keys();
    descriptor: ()Ljava/util/Collection;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.openjdk.jmh.util.DelegatingMultiset this
         0: .line 85
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.map:Ljava/util/Map;
            invokeinterface java.util.Map.keySet:()Ljava/util/Set;
            invokestatic java.util.Collections.unmodifiableCollection:(Ljava/util/Collection;)Ljava/util/Collection;
            areturn
        end local 0 // org.openjdk.jmh.util.DelegatingMultiset this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/openjdk/jmh/util/DelegatingMultiset<TT;>;
    Signature: ()Ljava/util/Collection<TT;>;

  public boolean equals(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=2
        start local 0 // org.openjdk.jmh.util.DelegatingMultiset this
        start local 1 // java.lang.Object o
         0: .line 90
            aload 0 /* this */
            aload 1 /* o */
            if_acmpne 1
            iconst_1
            ireturn
         1: .line 91
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            ifnull 2
            aload 0 /* this */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            aload 1 /* o */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            if_acmpeq 3
      StackMap locals:
      StackMap stack:
         2: iconst_0
            ireturn
         3: .line 94
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            checkcast org.openjdk.jmh.util.DelegatingMultiset
            astore 2 /* that */
        start local 2 // org.openjdk.jmh.util.DelegatingMultiset that
         4: .line 96
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.size:J
            aload 2 /* that */
            getfield org.openjdk.jmh.util.DelegatingMultiset.size:J
            lcmp
            ifeq 5
            iconst_0
            ireturn
         5: .line 97
      StackMap locals: org.openjdk.jmh.util.DelegatingMultiset
      StackMap stack:
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.map:Ljava/util/Map;
            aload 2 /* that */
            getfield org.openjdk.jmh.util.DelegatingMultiset.map:Ljava/util/Map;
            invokeinterface java.util.Map.equals:(Ljava/lang/Object;)Z
            ifne 6
            iconst_0
            ireturn
         6: .line 99
      StackMap locals:
      StackMap stack:
            iconst_1
            ireturn
        end local 2 // org.openjdk.jmh.util.DelegatingMultiset that
        end local 1 // java.lang.Object o
        end local 0 // org.openjdk.jmh.util.DelegatingMultiset this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Lorg/openjdk/jmh/util/DelegatingMultiset<TT;>;
            0    7     1     o  Ljava/lang/Object;
            4    7     2  that  Lorg/openjdk/jmh/util/DelegatingMultiset<TT;>;
    MethodParameters:
      Name  Flags
      o     

  public int hashCode();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=2, args_size=1
        start local 0 // org.openjdk.jmh.util.DelegatingMultiset this
         0: .line 104
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.map:Ljava/util/Map;
            invokeinterface java.util.Map.hashCode:()I
            istore 1 /* result */
        start local 1 // int result
         1: .line 105
            bipush 31
            iload 1 /* result */
            imul
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.size:J
            aload 0 /* this */
            getfield org.openjdk.jmh.util.DelegatingMultiset.size:J
            bipush 32
            lushr
            lxor
            l2i
            iadd
            istore 1 /* result */
         2: .line 106
            iload 1 /* result */
            ireturn
        end local 1 // int result
        end local 0 // org.openjdk.jmh.util.DelegatingMultiset this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    3     0    this  Lorg/openjdk/jmh/util/DelegatingMultiset<TT;>;
            1    3     1  result  I
}
Signature: <T:Ljava/lang/Object;>Ljava/lang/Object;Lorg/openjdk/jmh/util/Multiset<TT;>;Ljava/io/Serializable;
SourceFile: "DelegatingMultiset.java"
InnerClasses:
  public abstract Entry = java.util.Map$Entry of java.util.Map