In both Java 9 and Java 10, the API has been made a little clearer. Finally, in Java 11, isEmpty() another method is added. This brings more consistency to other APIs like those of Collection and String. Extension in class OptionalĪs mentioned in the text for Java 10, the class represents a tremendous enrichment of the JDK in Java 8. I treat both innovations in separate sections. In the next part, I introduce the HTTP / 2 API, which left the incubator state with Java 11 and was added to the full-fledged API in the JDK. Such is also found in the classes as well as in -Unit. In this series part I introduce a smaller extension in the class. In addition, I showed various convenience functions, first in the utility class. The previous part of the series was about the innovations in various APIs of Java 11, especially new methods in the class. The following example demonstrates testing for an empty or whitespace-only string:Īn introduction to Extensions in the classes Optional, Predicate & TimeUnit. Strings used to be laborious or only external libraries could be used to check if they contained only whitespaces. As a remedy Java 11 introduced the method isBlank() based on Character.isWhitespace(int). Let’s have a look at simple examples for a better understanding. The class has existed since JDK 1.0 and has since experienced few API changes. This changes with Java 11 – the following methods have been introduced: Java 11 New helper methods in class String

I treat both innovations in separate sections. Finally, I introduce the HTTP / 2 API, which left the incubator state with Java 11 and was added to the full-fledged API in the JDK. In the following series part I introduce a smaller extension in the class. Then I show various convenience functions, first in the utility class. There are some noteworthy things about API improvements: First, I’ll talk about the new methods in the class. In this section we’ll start with the new features in various Java 11 APIs. Java 11 new helper methods in the class String and the utility class Files. Function trimmer = ( var str) -> str.trim() Īlthough this adaptation in the syntax is only small, but fine, because more consistency is achieved and – as demonstrated in the example – the possibilities for specifying additional information about a variable is possible.

Java 11 install