Generate CRC32 Checksum For Byte Array Example

/*
	Generate CRC32 Checksum For Byte Array Example
	This Java example shows how to get the CRC32 checksum value for 
	array of bytes using CRC32 Java class.
*/
 
import java.util.zip.CRC32;
import java.util.zip.Checksum;
 
public class CalculateCRC32ForByteArray {
 
	public static void main(String args[]){
 
		String str = "Generate CRC32 Checksum For Byte Array Example";
 
		//Convert string to bytes
		byte bytes[] = str.getBytes();
 
		Checksum checksum = new CRC32();
 
		/*
		 * To compute the CRC32 checksum for byte array, use
		 * 
		 * void update(bytes[] b, int start, int length)
		 * method of CRC32 class.
		 */
 
		checksum.update(bytes,0,bytes.length);
 
		/*
		 * Get the generated checksum using
		 * getValue method of CRC32 class.
		 */
		long lngChecksum = checksum.getValue();
 
		System.out.println("CRC32 checksum for byte array is :" + lngChecksum);
	}
 
}
 
/*
Output of this program would be
CRC32 checksum for byte array is :3510043186
*/