This removes duplicated information when instantiating variables, and increases the readability. For example:

```Java
EnumMap<CallableHandles, HandleAssociation> handleMap =
      new EnumMap<CallableHandles, HandleAssociation>(CallableHandles.class);
```

becomes

```Java
EnumMap<CallableHandles, HandleAssociation> handleMap =
            new EnumMap<>(CallableHandles.class);
```

and

```Java
private static final EnumMap<SSType.Category, EnumSet<JDBCType.Category>> conversionMap =
            new EnumMap<SSType.Category, EnumSet<JDBCType.Category>>(SSType.Category.class);
```

becomes

```Java
private static final EnumMap<SSType.Category, EnumSet<JDBCType.Category>> conversionMap =
                new EnumMap<>(SSType.Category.class);
```