Type Parameters:

T - the type
```
public interface SessionKey<T>
```
A key for an object in the session.
A key is a combination of type and name. A key must have a type, or name, or both.
A key stored in the session always has a type parameter. That is, all keys returned by SessionData.getKeys() are guaranteed to have a type parameter. A key with a name only can be used to retrieve an item from the session where the type is not known ahead of time.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`String`	`getName()`	The name.
`Class<T>`	`getType()`	The type.
`static <T> SessionKey<T>`	`of(Class<T> type)`	Creates a key of the given type with no name.
`static SessionKey<?>`	`of(String name)`	Creates a key of the given name with no type.
`static <T> SessionKey<T>`	`of(String name, Class<T> type)`	Creates a key of the given name and type.
`static <T> SessionKey<T>`	`ofType(String name, T value)`	Creates a key of the given name, and the type of the given object (as provided by `Object.getClass()`).
`static <T> SessionKey<T>`	`ofType(T value)`	Creates a key of type of the given object (as provided by `Object.getClass()`), and no name.

- Method Detail
  - getName
```
@Nullable
String getName()
```
    The name.
    
    Returns:
    
    the name
  - getType
```
@Nullable
Class<T> getType()
```
    The type.
    
    Returns:
    
    the type
  - of
```
static <T> SessionKey<T> of(Class<T> type)
```
    Creates a key of the given type with no name.
    
    Type Parameters:
    
    T - the type
    
    Parameters:
    
    type - the type
    
    Returns:
    
    a session key
  - of
```
static <T> SessionKey<T> of(@Nullable
                            String name,
                            @Nullable
                            Class<T> type)
```
    Creates a key of the given name and type.
    If both arguments are null, an IllegalArgumentException will be thrown.
    
    Type Parameters:
    
    T - the type
    
    Parameters:
    
    name - the name
    
    type - the type
    
    Returns:
    
    a session key
  - of
```
static SessionKey<?> of(String name)
```
    Creates a key of the given name with no type.
    
    Parameters:
    
    name - the name
    
    Returns:
    
    a session key
  - ofType
```
static <T> SessionKey<T> ofType(String name,
                                T value)
```
    Creates a key of the given name, and the type of the given object (as provided by Object.getClass()).
    
    Type Parameters:
    
    T - the type
    
    Parameters:
    
    name - the name
    
    value - the object who's runtime type will be used as the type of the key
    
    Returns:
    
    a session key
  - ofType
```
static <T> SessionKey<T> ofType(T value)
```
    Creates a key of type of the given object (as provided by Object.getClass()), and no name.
    
    Type Parameters:
    
    T - the type
    
    Parameters:
    
    value - the object who's runtime type will be used as the type of the key
    
    Returns:
    
    a session key

Interface SessionKey<T>

Method Summary

Method Detail

getName

getType

of

of

of

ofType

ofType