# Files and I/O Operations In Java: -

 The java.io package contains nearly every class you might ever need to perform input and output (I/O) in Java. All these streams represent an input source and an output destination. The stream in the java.io package supports many data such as primitives, object, localized characters, etc.)

####  Stream

 A stream can be defined as a sequence of data. There are two kinds of Streams −

*  InputStream − The InputStream is used to read data from a source.
*   OutputStream − The OutputStream is used for writing data to a destination. 

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 Java provides strong but flexible support for I/O related to files and networks but this tutorial covers very basic functionality related to streams and I/O 

**Reading and Writing Files**

 As described earlier, a stream can be defined as a sequence of data. The InputStream is used to read data from a source and the OutputStream is used for writing data to a destination.

 Here is a hierarchy of classes to deal with Input and Output streams.

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