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 abstract class it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet extends it.unimi.dsi.fastutil.objects.AbstractObjectSet<it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry>
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet
  super_class: it.unimi.dsi.fastutil.objects.AbstractObjectSet
{
  protected final it.unimi.dsi.fastutil.doubles.Double2IntMap map;
    descriptor: Lit/unimi/dsi/fastutil/doubles/Double2IntMap;
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL

  public void <init>(it.unimi.dsi.fastutil.doubles.Double2IntMap);
    descriptor: (Lit/unimi/dsi/fastutil/doubles/Double2IntMap;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet this
        start local 1 // it.unimi.dsi.fastutil.doubles.Double2IntMap map
         0: .line 132
            aload 0 /* this */
            invokespecial it.unimi.dsi.fastutil.objects.AbstractObjectSet.<init>:()V
         1: .line 133
            aload 0 /* this */
            aload 1 /* map */
            putfield it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet.map:Lit/unimi/dsi/fastutil/doubles/Double2IntMap;
         2: .line 134
            return
        end local 1 // it.unimi.dsi.fastutil.doubles.Double2IntMap map
        end local 0 // it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lit/unimi/dsi/fastutil/doubles/AbstractDouble2IntMap$BasicEntrySet;
            0    3     1   map  Lit/unimi/dsi/fastutil/doubles/Double2IntMap;
    MethodParameters:
      Name  Flags
      map   final

  public boolean contains(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=7, args_size=2
        start local 0 // it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet this
        start local 1 // java.lang.Object o
         0: .line 138
            aload 1 /* o */
            instanceof java.util.Map$Entry
            ifne 2
         1: .line 139
            iconst_0
            ireturn
         2: .line 140
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            instanceof it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry
            ifeq 7
         3: .line 141
            aload 1 /* o */
            checkcast it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry
            astore 2 /* e */
        start local 2 // it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry e
         4: .line 142
            aload 2 /* e */
            invokeinterface it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry.getDoubleKey:()D
            dstore 3 /* k */
        start local 3 // double k
         5: .line 143
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet.map:Lit/unimi/dsi/fastutil/doubles/Double2IntMap;
            dload 3 /* k */
            invokeinterface it.unimi.dsi.fastutil.doubles.Double2IntMap.containsKey:(D)Z
            ifeq 6
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet.map:Lit/unimi/dsi/fastutil/doubles/Double2IntMap;
            dload 3 /* k */
            invokeinterface it.unimi.dsi.fastutil.doubles.Double2IntMap.get:(D)I
            aload 2 /* e */
            invokeinterface it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry.getIntValue:()I
            if_icmpne 6
            iconst_1
            ireturn
      StackMap locals: it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry double
      StackMap stack:
         6: iconst_0
            ireturn
        end local 3 // double k
        end local 2 // it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry e
         7: .line 145
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            checkcast java.util.Map$Entry
            astore 2 /* e */
        start local 2 // java.util.Map$Entry e
         8: .line 146
            aload 2 /* e */
            invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
            astore 3 /* key */
        start local 3 // java.lang.Object key
         9: .line 147
            aload 3 /* key */
            ifnull 10
            aload 3 /* key */
            instanceof java.lang.Double
            ifne 11
        10: .line 148
      StackMap locals: java.util.Map$Entry java.lang.Object
      StackMap stack:
            iconst_0
            ireturn
        11: .line 149
      StackMap locals:
      StackMap stack:
            aload 3 /* key */
            checkcast java.lang.Double
            invokevirtual java.lang.Double.doubleValue:()D
            dstore 4 /* k */
        start local 4 // double k
        12: .line 150
            aload 2 /* e */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            astore 6 /* value */
        start local 6 // java.lang.Object value
        13: .line 151
            aload 6 /* value */
            ifnull 14
            aload 6 /* value */
            instanceof java.lang.Integer
            ifne 15
        14: .line 152
      StackMap locals: double java.lang.Object
      StackMap stack:
            iconst_0
            ireturn
        15: .line 153
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet.map:Lit/unimi/dsi/fastutil/doubles/Double2IntMap;
            dload 4 /* k */
            invokeinterface it.unimi.dsi.fastutil.doubles.Double2IntMap.containsKey:(D)Z
            ifeq 16
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet.map:Lit/unimi/dsi/fastutil/doubles/Double2IntMap;
            dload 4 /* k */
            invokeinterface it.unimi.dsi.fastutil.doubles.Double2IntMap.get:(D)I
            aload 6 /* value */
            checkcast java.lang.Integer
            invokevirtual java.lang.Integer.intValue:()I
            if_icmpne 16
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
        16: iconst_0
            ireturn
        end local 6 // java.lang.Object value
        end local 4 // double k
        end local 3 // java.lang.Object key
        end local 2 // java.util.Map$Entry e
        end local 1 // java.lang.Object o
        end local 0 // it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0   17     0   this  Lit/unimi/dsi/fastutil/doubles/AbstractDouble2IntMap$BasicEntrySet;
            0   17     1      o  Ljava/lang/Object;
            4    7     2      e  Lit/unimi/dsi/fastutil/doubles/Double2IntMap$Entry;
            5    7     3      k  D
            8   17     2      e  Ljava/util/Map$Entry<**>;
            9   17     3    key  Ljava/lang/Object;
           12   17     4      k  D
           13   17     6  value  Ljava/lang/Object;
    MethodParameters:
      Name  Flags
      o     final

  public boolean remove(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=8, args_size=2
        start local 0 // it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet this
        start local 1 // java.lang.Object o
         0: .line 158
            aload 1 /* o */
            instanceof java.util.Map$Entry
            ifne 2
         1: .line 159
            iconst_0
            ireturn
         2: .line 160
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            instanceof it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry
            ifeq 5
         3: .line 161
            aload 1 /* o */
            checkcast it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry
            astore 2 /* e */
        start local 2 // it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry e
         4: .line 162
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet.map:Lit/unimi/dsi/fastutil/doubles/Double2IntMap;
            aload 2 /* e */
            invokeinterface it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry.getDoubleKey:()D
            aload 2 /* e */
            invokeinterface it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry.getIntValue:()I
            invokeinterface it.unimi.dsi.fastutil.doubles.Double2IntMap.remove:(DI)Z
            ireturn
        end local 2 // it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry e
         5: .line 164
      StackMap locals:
      StackMap stack:
            aload 1 /* o */
            checkcast java.util.Map$Entry
            astore 2 /* e */
        start local 2 // java.util.Map$Entry e
         6: .line 165
            aload 2 /* e */
            invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
            astore 3 /* key */
        start local 3 // java.lang.Object key
         7: .line 166
            aload 3 /* key */
            ifnull 8
            aload 3 /* key */
            instanceof java.lang.Double
            ifne 9
         8: .line 167
      StackMap locals: java.util.Map$Entry java.lang.Object
      StackMap stack:
            iconst_0
            ireturn
         9: .line 168
      StackMap locals:
      StackMap stack:
            aload 3 /* key */
            checkcast java.lang.Double
            invokevirtual java.lang.Double.doubleValue:()D
            dstore 4 /* k */
        start local 4 // double k
        10: .line 169
            aload 2 /* e */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            astore 6 /* value */
        start local 6 // java.lang.Object value
        11: .line 170
            aload 6 /* value */
            ifnull 12
            aload 6 /* value */
            instanceof java.lang.Integer
            ifne 13
        12: .line 171
      StackMap locals: double java.lang.Object
      StackMap stack:
            iconst_0
            ireturn
        13: .line 172
      StackMap locals:
      StackMap stack:
            aload 6 /* value */
            checkcast java.lang.Integer
            invokevirtual java.lang.Integer.intValue:()I
            istore 7 /* v */
        start local 7 // int v
        14: .line 173
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet.map:Lit/unimi/dsi/fastutil/doubles/Double2IntMap;
            dload 4 /* k */
            iload 7 /* v */
            invokeinterface it.unimi.dsi.fastutil.doubles.Double2IntMap.remove:(DI)Z
            ireturn
        end local 7 // int v
        end local 6 // java.lang.Object value
        end local 4 // double k
        end local 3 // java.lang.Object key
        end local 2 // java.util.Map$Entry e
        end local 1 // java.lang.Object o
        end local 0 // it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0   15     0   this  Lit/unimi/dsi/fastutil/doubles/AbstractDouble2IntMap$BasicEntrySet;
            0   15     1      o  Ljava/lang/Object;
            4    5     2      e  Lit/unimi/dsi/fastutil/doubles/Double2IntMap$Entry;
            6   15     2      e  Ljava/util/Map$Entry<**>;
            7   15     3    key  Ljava/lang/Object;
           10   15     4      k  D
           11   15     6  value  Ljava/lang/Object;
           14   15     7      v  I
    MethodParameters:
      Name  Flags
      o     final

  public int size();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet this
         0: .line 177
            aload 0 /* this */
            getfield it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet.map:Lit/unimi/dsi/fastutil/doubles/Double2IntMap;
            invokeinterface it.unimi.dsi.fastutil.doubles.Double2IntMap.size:()I
            ireturn
        end local 0 // it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/doubles/AbstractDouble2IntMap$BasicEntrySet;
}
Signature: Lit/unimi/dsi/fastutil/objects/AbstractObjectSet<Lit/unimi/dsi/fastutil/doubles/Double2IntMap$Entry;>;
SourceFile: "AbstractDouble2IntMap.java"
NestHost: it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap
InnerClasses:
  public abstract BasicEntrySet = it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap$BasicEntrySet of it.unimi.dsi.fastutil.doubles.AbstractDouble2IntMap
  public abstract Entry = it.unimi.dsi.fastutil.doubles.Double2IntMap$Entry of it.unimi.dsi.fastutil.doubles.Double2IntMap
  public abstract Entry = java.util.Map$Entry of java.util.Map