The List type returned by asList is Arrays$ArrayList. The toArray method in JDK 8 on that class is: @Override public Object[] toArray() { return a.clone(); } But in JDK 9+ it is: @Override public Object[] toArray() { return Arrays.copyOf(a, a.length, Object[].class); } In both cases a String[] is passed to asList, but in the JDK … Read more
According to http://www.oracle.com/technetwork/java/javase/9-deprecated-features-3745636.html Java Deployment Technologies are deprecated and will be removed in a future release Java Applet and WebStart functionality, including the Applet API, The Java plug-in, the Java Applet Viewer, JNLP and Java Web Start including the javaws tool are all deprecated in JDK 9 and will be removed in a future release. … Read more
(Note that GC tuning is extremely dependant on the environment, so there is no magic recipe.) Had a very similar issue with G1. By default, it seems to be rather badly suited for REST endpoints (again, this is only what I experienced in my direct neighborhood). What helped me was experimenting with the GC flags, … Read more
You need to add the JAXB dependency (as not provided any longer by default in Java 9) and you have to use Spring Boot 2 : <dependency> <groupId>javax.xml.bind</groupId> <artifactId>jaxb-api</artifactId> <version>2.3.0</version> </dependency> Note that if you use Java 10, you would have exactly the same issue as the JAXB dependency removal was not done just for … Read more
I think this is an XY problem. Accessing the URLs of all resources on the classpath is not a supported operation in Java and is not a good thing to try to do. As you have already seen in this question, you will be fighting against the framework all the way if you try to … Read more
First, to set the record straight, I neither said nor wrote the text quoted above. I’d never have put it that way. That’s just sloppy reporting on the part of the publications involved. The most important thing to understand about class loading and resource lookup in Java 9 is that, at a fundamental level, they … Read more
In May 2019 commented to watch the OpenWebStart project. Now (October 2019) it is time to give OpenWebStart serious consideration. While not yet feature complete, a alpha beta release of OpenWebStart is now available for download under a “GPL with Classpath exception” license. The OpenWebStart Technical Details page states: OpenWebStart is based on Iced-Tea-Web and … Read more
I don’t say it’s a nice solution, but it seems to be a way through. Map<Long, String> dayOfWeekTexts = Map.of(1L, “Mo”, 2L, “Di”, 3L, “Mi”, 4L, “Do”, 5L, “Fr”, 6L, “Sa”, 7L, “So”); Map<Long, String> monthTexts = Map.ofEntries(Map.entry(1L, “Jan”), Map.entry(2L, “Feb”), Map.entry(3L, “Mär”), Map.entry(4L, “Apr”), Map.entry(5L, “Mai”), Map.entry(6L, “Jun”), Map.entry(7L, “Jul”), Map.entry(8L, “Aug”), Map.entry(9L, “Sep”), … Read more
Very simplified answer After Jigsaw, public will be public only within the JAR scope. To see the class outside the JAR it must be exported. Java will force modularization because any inter module interaction will have to be specified in the module-info file. For example, if you produce a WAR it will remain almost unchanged … Read more
What exactly is the sjavac tool? The sjavac tool is an (allegedly smart) wrapper around javac, developed at Oracle and intended to provide the following features: incremental compiles – recompile only what’s necessary parallel compilation – utilize more than one core during compilation keep compiler in a hot VM – reuse a JIT’ed javac instance … Read more