Skip to content

Tag: java-stream

Search for all po files in a directory and its subdirectories and create a Hashmap containing the filepaths as value and its directory as key

I want to search for all .po files in a directory and add them to a HashMap. My directories looks like the following: How can I represent/search these files with the help of java-Streams and HashMap<String, List<File>>, with en/de/it.po as a List<File> type and the respective directory root of these files dir1subdir-1**subdir-n as a key? I’ve tried the following solution

Java Sort List Based Off Intersections

I’m trying to see how I can sort a list using streams where items that exist in a separate hashset are moved to the front of the list. Example: I’m assuming I can use a lambda in streams.sorted() for this but I’m not able to figure out what this would look like. Answer You can compare the boolean values which

Why this lambda function does not remember type, in Java? [closed]

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed last month. Improve this question I

Tranforming a Map containing Sets into a Map of Set-Sizes [closed]

Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed last month. Improve this question This is my hash map: How can I get a new HashMap that will

Create a SortedMap from a List objects with the Value represented as a list of N lowest object’s attributes mapped to a particular Key

I am working with a CSV file which includes some information about accidents. I’ve created the Accident type: I’ve also created a function that reads all the CSV file, converts all the accidents to a List<Accident> and saves it to this type AccidentArchive: So, we are working with streams which I don’t understand entirely yet, and I’ve been stuck in

Ruducing a List of objects using Stream.reduce()

I have a list of objects, and I need to group objects having status equal to my customizedStatusto a single customized one with count = sumOfSameObjectsCount . We have class MyObject Suggested implementation : Things work like a charm in case there are multiple objects with status equal to my customizedStatus. Input : Output : In case there is one