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InputStream,how to use

linus dale
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Joined: Jul 01, 2009
Posts: 44


why is this line correct
i is of class InputStream,how can it become object of FileInputStream

generally we write

or



Also is there a class like FileInputStreamReader
or FileInputStreamWriter
or FileOutputStreamReader
or FileOutputStreamWriter






Ulises Pulido
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Joined: Jul 24, 2008
Posts: 81
Is correct because InputStream is a superclass of FileInputStream.

You can assign directly a reference of a child class to a parent class.


As far as I know there are not such classes you are asking for

But there are FileReader and FileWriter.


SCJP 5.0, SCWCD 5.0, SCBCD 5.0, SCJD, SCEA in progress
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linus dale
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Joined: Jul 01, 2009
Posts: 44
Ulises Pulido wrote:Is correct because InputStream is a superclass of FileInputStream.

You can assign directly a reference of a child class to a parent class.


As far as I know there are not such classes you are asking for

But there are FileReader and FileWriter.



thanks
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: InputStream,how to use
 
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