Compute CRC-32 checksum : Checksum « File « Java Tutorial






  1. Java Tutorial
  2. File
  3. Checksum
import java.util.zip.CRC32;
import java.util.zip.Checksum;

public class Main {
  public static void main(String[] argv) throws Exception {
    byte[] bytes = "some data".getBytes();

    // Compute Adler-32 checksum
    Checksum checksumEngine = new CRC32();
    checksumEngine.update(bytes, 0, bytes.length);
    long checksum = checksumEngine.getValue();

    checksumEngine.reset();
  }
}








11.69.Checksum
11.69.1.A single checksum calculation for multiple files
11.69.2.Compressing Streams: Parity Checksum
11.69.3.Compressing Streams: File Summer
11.69.4.Calculating the Checksum of a Byte Array (Compute Adler-32 checksum)
11.69.5.Compute CRC-32 checksum
11.69.6.Calculating the Checksum of a File
11.69.7.The java.util.zip package can be used to create a checksum.
11.69.8.Check sum for an InputStream