I was looking for a nice solution to measure the code coverage in my Spring Boot biking project. It should support Java 8, Maven and for added bonus, my IDE. I ended up using JaCoCo respectively the Maven plugin. If you expect a lengthier post, i must disappoint you. All that was need to turn […]
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 fourth Post in my series Developing a web application with Spring Boot, AngularJS and Java 8. I’m more a backend and database guy than a frontend developer, but i know how to write valid HTML and add some unobtrusive JavaScript to it, for example in my daily photo project. Daily Fratze is […]
This is the third Post in my series Developing a web application with Spring Boot, AngularJS and Java 8. My old application had a J2ME(!) companion on my dump phone that send my location to the app, showing it on the page. This was 2009… Before my iPhone time. Planning a longer bike tour in […]