java-15

问题 I have installed following version of Java on Windows 8.1. JAVA_HOME environment variable points to newly installed JDK library. java 15 2020-09-15 Java(TM) SE Runtime Environment (build 15+36-1562) Java HotSpot(TM) 64-Bit Server VM (build 15+36-1562, mixed mode, sharing) When I've started SoapUI 5.6, I have got following error message: java.lang.UnsupportedClassVersionError: com/eviware/soapui/SoapUI has been compiled by a more recent version of the Java Runtime (class file version 53.0),

问题 Accidentally I have stumbled into a change in jdk-15 that I was not aware of. Suppose I have a very simple question: what is the size of an array of 3 intergers? For this, I use JOL. The code is fairly trivial: import org.openjdk.jol.info.ClassLayout; import org.openjdk.jol.vm.VM; public class Array { public static void main(String [] args){ int [] array = new int[3]; System.out.println(ClassLayout.parseInstance(array).toPrintable()); } } I run this with jdk-13 : java -Djdk.attach

问题 I have an existing Spring Boot application that is non-modular and uses Nashorn. The application works well on Java 14. After adding the Maven coordinates of the new Nashorn available for Java 15, the application fails while starting the script engine. public static void main(String[] args) throws ScriptException { ScriptEngineManager factory = new ScriptEngineManager(); ScriptEngine engine = factory.getEngineByName("nashorn"); engine.eval("print('Hello, World!');"); } Error message:

问题 I have an existing Spring Boot application that is non-modular and uses Nashorn. The application works well on Java 14. After adding the Maven coordinates of the new Nashorn available for Java 15, the application fails while starting the script engine. public static void main(String[] args) throws ScriptException { ScriptEngineManager factory = new ScriptEngineManager(); ScriptEngine engine = factory.getEngineByName("nashorn"); engine.eval("print('Hello, World!');"); } Error message:

问题 I have an existing Spring Boot application that is non-modular and uses Nashorn. The application works well on Java 14. After adding the Maven coordinates of the new Nashorn available for Java 15, the application fails while starting the script engine. public static void main(String[] args) throws ScriptException { ScriptEngineManager factory = new ScriptEngineManager(); ScriptEngine engine = factory.getEngineByName("nashorn"); engine.eval("print('Hello, World!');"); } Error message:

问题 I have an existing Spring Boot application that is non-modular and uses Nashorn. The application works well on Java 14. After adding the Maven coordinates of the new Nashorn available for Java 15, the application fails while starting the script engine. public static void main(String[] args) throws ScriptException { ScriptEngineManager factory = new ScriptEngineManager(); ScriptEngine engine = factory.getEngineByName("nashorn"); engine.eval("print('Hello, World!');"); } Error message:

问题 I'm trying to run the new Java 15 features under Eclipse 2020-09. I have installed OpenJDK 15 and set it under "Installed JRE": Nevertheless I cannot set this version as compiler version (only till version 14): What am I doing wrong? 回答1: Eclipse needs a dedicated plugin to support Java 15. This marketplace solution provides Java 15 support for Eclipse 2020-09 (4.17) 来源： https://stackoverflow.com/questions/64119888/how-to-use-java-version-15-in-eclipse-2020-09

来源： https://stackoverflow.com/questions/63972130/what-is-the-difference-between-a-final-and-a-non-sealed-class-in-java-15s-seale

来源： https://stackoverflow.com/questions/63687580/how-can-i-add-variables-inside-java-15-text-block-feature

来源： https://stackoverflow.com/questions/63687580/how-can-i-add-variables-inside-java-15-text-block-feature