I wrote a method to parse Metrics data and at first faced a problem with the type of transactionMap which is a java.util.Map. And I solved it using JavaConverters.
I have this:but that doesn't compile, it says:is there is a good way to get around this?I think you can convert your array to a list first. Maybe something like
I have a collection like : List<List<Object>> firstListI want to group together a similar list of pattern : List<List<Object>> secondList but grouped by indexes.
I would like to convert this for loop in Java 8 way. It could be better if using a stream. Output will be the "set" object with contains the Character.
I'm learning Java 8 - Java 11 and I got a code that I'm converting to java-streams. I have the following classes:
I have a List of students with their names, grades.. I need to calculate the average grade for all students, but in this List many duplicate names with the different grade, for example:
I have a problem grouping two values with Java 8.My main problem is about grouping two fields, I group correctly one field called getNameOfCountryOrRegion() but now I am interested in groupingBy another field that is called leagueDTO as well.
I want to split the below string and store it in a HashMap:I want my output to be store in map, like first string before hyphen (-)(firstName) and first string after (=)(firstName1),......... i.e.,
I'm having a problem with Stream API... again. The functionality I'm trying to implement isn't the hardest thing, but I'm having difficulties filtering since there are incompatible types and I don't how to make the comparison right. The idea is to get information about departments which the given sections are...
I want to know how to extract a List<D> from a HashMap<E,R> considering these constraints: