Singleton

```
@Target(TYPE)
@Retention(RUNTIME)
public @interface Singleton
```
Component-defining annotation for a singleton session bean.

Since:

EJB 3.1

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`java.lang.String`	`description`	A string describing the singleton session bean.
`java.lang.String`	`mappedName`	A product specific name(for example, global JNDI name) that this session bean should be mapped to.
`java.lang.String`	`name`	The ejb-name for this bean.

- Element Detail
  - name
```
java.lang.String name
```
    The ejb-name for this bean. Defaults to the unqualified name of the singleton session bean class.
    
    Returns:
    
    a String object.
    
    Default:
    
    ""
- - mappedName
```
java.lang.String mappedName
```
    A product specific name(for example, global JNDI name) that this session bean should be mapped to. Application servers are not required to support any particular form or type of mapped name, nor the ability to use mapped names. The mapped name is product-dependent and often installation-dependent. No use of a mapped name is portable.
    
    Returns:
    
    a String object.
    
    Default:
    
    ""
- - description
```
java.lang.String description
```
    A string describing the singleton session bean.
    
    Returns:
    
    a String object.
    
    Default:
    
    ""