(Java) Compute Glacier SHA256 Linear Hash of a File

Computes the Amazon Glacier SHA256 linear hash for a file.

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkCrypt2 crypt = new CkCrypt2();

    // The "linear hash" is simply the SHA256 hash of the file bytes.
    crypt.put_HashAlgorithm("sha256");

    // Return the hash in lowercase hexidecimal format.
    crypt.put_EncodingMode("hexlower");

    String linearHashHex = crypt.hashFileENC("qa_data/jpg/penguins.jpg");
    System.out.println("SHA256 linear hash = " + linearHashHex);
  }
}