Questions tagged as 'java-stream'

I am working with Streams (Java 8) and when I use the .stream() method it is not clear to me the difference between .map and .flatMap . What are the differences between these methods?     

Dear, I have an initial student array and an array of new students. How can I do to obtain an array of new students that are not in the initial student array? This using java lambdas. UPDATE List listaFinal = new ArrayList(); for (Alum...

The problem is that when I inspect the attributes of an entity (Hibernate) inside a ParallelStream, sessions are created to the database in each Thread created by the Stream. These sessions can not be closed since I can not access the session. c...

I would like to reverse the order of a text string using Java Java API Java 8. This is what I have tried, but it does not make the investment. import java.util.Comparator; import java.util.stream.Collectors; import java.util.stream.Stream;...

I'm making an application with swing and I need to link data that I enter for that application to a * .dat file. The fact is that I have three packages and each package with its * .java: Package 1: Class Vehicles with their attributes and met...