boolean | Boolean | byte | Byte | char |
Character | short | Short | int | Integer |
long | Long | float | Float | double |
Double | byte[] | String | BigInteger | BigDecimal |
Collection | Date | Collections.emptyList | Collections.singleton | Map |
StringBuilder | TreeMap | Collections.emptyMap | Collections.emptySet | KryoSerializable |
StringBuffer | Class | Collections.singletonList | Collections.singletonMap | Currency |
Calendar | TimeZone | Enum | EnumSet |