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How to generate Hash value of any type of file (.doc,.docx,*.pdf, etc...) in java?
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MD5 Message Digest Algorithm Here we have used the digest() method of the MessageDigest class from the java. security package to create the MD5 hash in bytes and then converted those bytes to hex format to generate the hash as text.
First we'll explain the simplest way to use it: via Windows File Explorer. In Windows File Explorer select the files you want the hash values calculated for, click the right mouse button, and select Calculate Hash Value, then select the appropriate hash type from the pop-up sub-menu (e.g. MD5).
There is a related answer posted here Getting a File's MD5 Checksum in Java
You may look into "Real's How To" Here and use your desired hashing algorithm like this
String myHash = "MD5"; // or "SHA-1" or "SHA-256"
MessageDigest complete = MessageDigest.getInstance(myHash);
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