| Package | Description | 
|---|---|
| java.io | Provides for system input and output through data streams,
serialization and the file system. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ObjectInputStreamAn ObjectInputStream deserializes primitive data and objects previously
 written using an ObjectOutputStream. | 
| class  | ObjectOutputStreamAn ObjectOutputStream writes primitive data types and graphs of Java objects
 to an OutputStream. | 
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