"Java" Java byte[], File, InputStream convert each other

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In the process of use, be sure to note that close () off each read-write stream!!!!!

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1. Convert file, FileInputStream to byte array:

The "New file (parameter) parameter can write absolute path, or you can write a file name, this file will be generated in this directory of the project or from the root directory of this project to query whether there is this file"

New File ("test.txt"new  fileinputstream (file); byte New byte [Input.available ()];input.read (byt);

2. Convert byte array to InputStream:

byte New byte [1024x768new bytearrayinputstream (byt);

3. Convert a byte array to file:

New File ("newnew  bufferedoutputstream (output); Bufferedoutput.write (byt);

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Reference Address: https://www.cnblogs.com/DylanZ/p/6269042.html

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"Java" Java byte[], File, InputStream convert each other