Uses of Package
lib.pwss.hash.file_hash_handler.parallel

Calculate all three hashes for a file in parallel

package org.pwss;

import lib.pwss.hash.ParallelFileHash;
import lib.pwss.hash.file_hash_handler.BigFileHashHandler;
import lib.pwss.hash.file_hash_handler.parallel.ParallelFileHashHandler;
import lib.pwss.hash.model.HashForFilesOutput;

import java.io.File;

public class Main {
    public static void main(String[] args) {

        File file = new File("C:\\Users\\my_user\\downloads\\folder_with_big_files\\a_big_file.mp4");

        // -1L means: attempt hashing regardless of file size
        ParallelFileHash parallelFileHash = new ParallelFileHashHandler(new BigFileHashHandler(-1L));

        HashForFilesOutput computedHashes = parallelFileHash.GetAllHashesInParallel(file);

        System.out.printf("Alg 1: %s\nAlg 2: %s\nAlg 3: %s",computedHashes.sha256(),computedHashes.sha3(),computedHashes.blake2());

        // Optional: shutdown internal thread pool
        parallelFileHash.shutdownThreadPool();

    }
}

Safe cleanup usage

package org.pwss;

import lib.pwss.hash.ParallelFileHash;
import lib.pwss.hash.file_hash_handler.BigFileHashHandler;
import lib.pwss.hash.file_hash_handler.parallel.ParallelFileHashHandler;
import lib.pwss.hash.model.HashForFilesOutput;

import java.io.File;

public class Main {
    public static void main(String[] args) {

        File file = new File("C:\\Users\\my_user\\downloads\\folder_with_big_files\\a_big_file.mp4");

        ParallelFileHash parallelFileHash = new ParallelFileHashHandler(new BigFileHashHandler(-1L));

        try {
            HashForFilesOutput computedHashes = parallelFileHash.GetAllHashesInParallel(file);

            System.out.println(computedHashes);

        } finally {
            // Optional: shutdown internal thread pool
            parallelFileHash.shutdownThreadPool();
        }

    }
}

lib.pwss.hash.file_hash_handler.parallel