class com.google.common.collect.RegularImmutableMap, this=40, total=40
class [Ljava.lang.Object;, this=144, total=184
  (was array of size: 32)
class [Ljava.util.Map$Entry;, this=40, total=224
  (was array of size: 7)
class com.google.common.collect.ImmutableEntry, this=16, total=240
class com.google.common.collect.ImmutableEntry, this=16, total=256
class com.google.common.collect.ImmutableEntry, this=16, total=272
class com.google.common.collect.ImmutableEntry, this=16, total=288
class com.google.common.collect.ImmutableEntry, this=16, total=304
class com.google.common.collect.ImmutableEntry, this=16, total=320
class com.google.common.collect.ImmutableEntry, this=16, total=336

Google: 336

class java.util.HashMap, this=40, total=40
class [Ljava.util.HashMap$Entry;, this=80, total=120
  (was array of size: 16)
class java.util.HashMap$Entry, this=24, total=144
class java.util.HashMap$Entry, this=24, total=168
class java.util.HashMap$Entry, this=24, total=192
class java.util.HashMap$Entry, this=24, total=216
class java.util.HashMap$Entry, this=24, total=240
class java.util.HashMap$Entry, this=24, total=264
class java.util.HashMap$Entry, this=24, total=288

JDK: 288

Google/JDK =  1.1666666666666667