RuntimeDelegate.HeaderDelegate (Jakarta EE Web Profile API)

Type Parameters:

T - a JAX-RS type that corresponds to the value of a HTTP header.

Enclosing class:

RuntimeDelegate
```
public static interface RuntimeDelegate.HeaderDelegate<T>
```
Defines the contract for a delegate that is responsible for converting between the String form of a HTTP header and the corresponding JAX-RS type T.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`T`	`fromString(String value)`	Parse the supplied value and create an instance of `T`.
`String`	`toString(T value)`	Convert the supplied value to a String.

- Method Detail
  - fromString
```
T fromString(String value)
```
    Parse the supplied value and create an instance of T.
    
    Parameters:
    
    value - the string value.
    
    Returns:
    
    the newly created instance of T.
    
    Throws:
    
    IllegalArgumentException - if the supplied string cannot be parsed or is null.
  - toString
```
String toString(T value)
```
    Convert the supplied value to a String.
    
    Parameters:
    
    value - the value of type T.
    
    Returns:
    
    a String representation of the value.
    
    Throws:
    
    IllegalArgumentException - if the supplied object cannot be serialized or is null.