I am having a list that looks like below What i would like to achieve is to filter like for example on date 2022-08-27 and also on date 2022-08-26 respectively i only return one record which is having the maximum currentSpeed such that my final list looks like below Below is how my code looks like and the way…
Tag: filter
How to filter a hashmap with specific conditions
I have the following initial hashmap: LatS=[59, 48, 59, 12, 48] LatD=[41, 42, 46, 42] EW=[W, W, W, W] NS=[N, N, N, N] LonM=[39, 23, 30, 48] State=[OH, SD, WA, MA] LatM=[5, 52, 35, 16] City=[Youngstown, Yankton, Yakima, Worcester] LonS=[0, 23, 36, 0] LonD=[80, 97, 120, 71] I want to filter the Hashmap using th…
Spring boot filter is ignored
I m trying to create a filter, but it is ignored Did I forget to do smth? Answer The problem was in the absent of pom dependency Instead the Filter was loaded from some java library and therefor compilation was successful (can be removed in module settings)
How to use Spring Specification to filter through many to many realtionship?
I decided to create filters in my application with Spring Specification. Everything was going well but I don’t know to do filter User events. Which filter events by user login. My entities look like this: I read many subjects on stack but still don’t know to how to implement my filter logic and fi…
Remove a specific row from a 2D Array
Given a 2D array and a string, how can I remove a row which does not contain a specific string? So far, I created a nested for loop which iterates through the array, adding all adjacent elements(except the string itself) to an ArrayList. However, I do not want to include elements from rows that exclude the sp…
TreeContentProvider just getting every Directory of my path. (File Filter)
im trying to get every folder of my path. Now Im getting just folders but as soon as some other file comes up it gives me a JavaNullPointerException. I know its beacuse of listFiles() but I dont know how to let it work otherwise. Can someone help me? “ Answer File.listFiles() returns null if the file is…
Collect a stream after an objects attribute exceeds a certain threshold
Assume I have a list of custom objects MaDate with a field temp of type int. I want to use streams to get all items after the first hits a certain threshold MaDate.temp >= 10 . And Ideally the result list should contain the last 3 elements having temp values [10,3,9]. I can not use filter because this woul…
Does the order of applying comparators and predicates matter?
We have a web page, where the user can select an arbitrary number of rules for filtering and sorting a group of items. With each rule, he sets a priority for it, with which the user defines the order of how the rules should be applied. From this group of rules I extract Comparator (if the rule was sorting) an…
How do I filter data in a restful way using Spring?
As the title says. I basically would love to do requests like Is there any ready spring way of achieving such? Something akin to the Page/Pageable mechanism would be great. If there is none I think I could implement it using Hibernate Criteria Queries & Argument Re-solvers. Basically allowing me to write …