Decoder (Apache Tomcat 8.5.87 API Documentation)

All Known Subinterfaces:

BinaryDecoder

All Known Implementing Classes:

Base64, BaseNCodec
```
@Deprecated
public interface Decoder
```
Deprecated.
This interface is unused and will be removed in Tomcat 9

Provides the highest level of abstraction for Decoders.
This is the sister interface of Encoder. All Decoders implement this common generic interface. Allows a user to pass a generic Object to any Decoder implementation in the codec package.
One of the two interfaces at the center of the codec package.

Method Summary

All Methods Instance Methods Abstract Methods Deprecated Methods
Modifier and Type	Method	Description
`java.lang.Object`	`decode(java.lang.Object source)`	Deprecated. Decodes an "encoded" Object and returns a "decoded" Object.

- Method Detail
  - decode
```
java.lang.Object decode(java.lang.Object source)
                 throws DecoderException
```
    Deprecated.
    
    Decodes an "encoded" Object and returns a "decoded" Object. Note that the implementation of this interface will try to cast the Object parameter to the specific type expected by a particular Decoder implementation. If a ClassCastException occurs this decode method will throw a DecoderException.
    
    Parameters:
    
    source - the object to decode
    
    Returns:
    
    a 'decoded" object
    
    Throws:
    
    DecoderException - a decoder exception can be thrown for any number of reasons. Some good candidates are that the parameter passed to this method is null, a param cannot be cast to the appropriate type for a specific encoder.