Discrepancies between Java 11 and Java 8 DecimalFormat behaviour

I’ve got a weird issue with Java 11. I’m porting a huge project, and I have some tests which use DecimalFormat failing on the 11 build, but not on the 8 build. DecimalFormat in Java 11 gives me a …

Is it possible to make a generic functional interface with optional parameter(s)?

I’m trying to create a functional interface in Java with a single method (of course) that can take any type of parameter(s) and return any data type (i.e. a generic method). This is what I have so far:…

Is it possible to exclude field-sets in AspectJ

Is it possible to exclude fiel-sets in AspectJ pointcuts, so instrumentation does not stumble over final fields in Java 11? When weaving the following aspect (the full example is here: https://github….

org.json cannot be resolved to a module?

I’m learning Java. To read JSON in my application, I downloaded this JSON library; which is an automatic module. I included that library in my module descriptor like: module art { exports art….

Eclipse(2020 09) Java Installation issue || Windows 10 OS

I am new to Java programming. I have installed Java SE 11 (LTS) (JDK 11.0.8) on my OS. Note that former Java also has jre folder in it. But Java 11 onward there come only JDK folder. So, I have set …

LocalDate.parse results in “DateTimeParseException…could not be parsed: null”

I am attempting to parse a date time stamp and extract only the date. Like so: import java.time.LocalDate; import java.time.format.DateTimeFormatter; class FormatterMain { public static void main(…

Where is the description of Constant Folding in the Java Language Specification, Java SE 11 Edition (JLS SE 11)?

As far as I know, Java deals with constant variables §4.12.4 by constant folding in compile time. I’ve tried my best, but I couldn’t find its description from JLS. Could anybody tell me where I could …

What is Coder in String Value?

I am reading a CSV file, by using com.opencsv.CSVReader Like below String[] headers = csvReader.readNext(); Value for header is coming like below screen shot: What’s coder here (Highlighted in …

Can’t connect to kubernetes API from inside the cluster

I’m trying to use the fabric8io/kubernetes-client in a simple example on my local minikube cluster where I get an IP of a pod import io.fabric8.kubernetes.client.Config; import io.fabric8.kubernetes….

parallelStream() java 1.8 vs 11

Consider the following code: public class StreamDemo { public static void main(String[] args) { StreamObject obj = new StreamObject(); obj.setName(“mystream”); List<...