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How to get the Checksum of a Byte Array in Java?
Create a Byte Array for which you want the Checksum −
byte[] arr = "This is it!".getBytes();
Now, create a Checksum object −
Checksum checksum = new Adler32(); checksum.update(arr, 0, arr.length);
The update() above updates the current checksum with the specified array of bytes.
Now, get the checksum with getValue() method, which gives the current checksum value.
Example
import java.util.zip.Adler32;
import java.util.zip.Checksum;
public class Demo {
public static void main(String[] argv) throws Exception {
byte[] arr = "This is it!".getBytes();
Checksum checksum = new Adler32();
checksum.update(arr, 0, arr.length);
long res = checksum.getValue();
System.out.println("Checksum of a Byte array = "+res);
}
}Output
Checksum of a Byte array = 391709619
Updated on: 30-Jul-2019
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