如何将ArrayList操作与Java线程并行化？

Question

I have the Array list of passwords. And I want to check if file decrypts with that password. I want to use threads for applying the string transformations like adding the number to the end of the string. What is the best way to do this using java threads or threadpool?

for (String pass : passwordDictionary) {
               setPassword(password);
               decrypt(secret)
               setPassword(password+numbers);
               decrypt(secret)

Answer 1

One of the possible ways is to use Stream.parallel() :

passwordDictionary.stream().parallel().forEach(password -> { 
               setPassword(password);
               decrypt(secret)
               setPassword(password+numbers);
               decrypt(secret)
})