I needed a function to sum (and therefor group) the values of a map of objects to Integers. My first solution was something like As you can see, i use the collect method with a custom supplier, accumulator and combiner. The supplier prepares a new map, the accumulator takes the map and an entry and […]
This is cool: Map.Entry#comparingByKey and Map.Entry#comparingByValue. They both take another comparator or lambda that is used as a delegate for creating a Map.Entry comparator, that can be used to sort maps or find maximum and minimum pairs in a map by key or value like in the following example: import java.time.LocalDate; import java.util.Map; import java.util.Random; […]
This is the second Post in my series Developing a web application with Spring Boot, AngularJS and Java 8. Java 8 has a major history. Many features should have been already included in Java 7 (i.e. Lambdas (anonymous functions for the elderly), modules and some stuff from project coin), which was released in 2011. Now, […]
This is the first Post in my series Developing a web application with Spring Boot, AngularJS and Java 8 and has been featured in This Week in Spring – April 15, 2014. Spring Boot makes it very easy to get you up and running with the Spring ecosystem without the need for XML configuration and […]
And if you’re feeling You’ve got everything you came for If you got everything And you don’t want no more You’ve got to just Keep on pushing Keep on pushing Push the sky away “Push The Sky Away” by Nick Cave & The Bad Seeds. This is gonna be a lengthy post about always learning […]