java-11

Hi I am new with java modules so this might be a dumb question. I was trying to sign my jar file with keystore and got the following error. user@Ubuntu:libs(master)$ jarsigner -keystore keyStoreFileName Test.jar alias Enter Passphrase for keystore: jarsigner: unable to sign jar: java.util.zip.ZipException: duplicate entry: module-info.class I couldn't find any documentation of how to avoid this. So I did jar -tf to check the content of the jar and yes, it does have multiple module-info.class files Is there any option to combine them? and how? my module-info.java contains the following. module

I've created a Spring Boot application using version 2.2.0.BUILD-SNAPSHOT with Java 11 (POM below): <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.0.BUILD-SNAPSHOT</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId

I'm trying to run a sample JavaFX app on Mac OS. build.gradle apply plugin: 'java' apply plugin: 'application' repositories { mavenCentral() } dependencies { compile "org.openjfx:javafx-base:11" compile "org.openjfx:javafx-graphics:11" compile "org.openjfx:javafx-controls:11" } compileJava { doFirst { println "CLASSPATH IS $classpath.asPath" options.compilerArgs = [ '--module-path', classpath.asPath, '--add-modules', 'javafx.graphics' ] classpath = files() } } Java class package com.test; import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Label;

The code compiles fine with JDK 8 (1.8.0_212) but fails to compile using JDK 11 (11.0.3) both Oracle jdk and open jdk (aws corretto) Tried compiling using javac and with Maven (maven version 3.6.1 and maven-compiler-plugin version 3.8.0) it compiles for JDK 8 and fails for JDK 11. import java.net.URL; import java.util.List; import java.util.ArrayList; import java.util.Arrays; import java.util.function.Function; import java.util.stream.Stream; public class AppDemo { public static void main(String[] args) { // NO error here giveMeStream("http://foo.com").map(wrap(url -> new URL(url))); List

In OpenJDK 8, it was possible to access sun.misc.VM and call isDirectMemoryPageAligned and maxDirectMemory . isDirectMemoryPageAligned is used to size correctly the direct memory to allocate, as done by DirectByteBuffer . maxDirectMemory is used to report memory statistics as well as access giving the value configured for -XX:MaxDirectMemorySize . Internally, it will set a limit to the allowed consumption of direct memory. Since OpenJDK 9, the class VM has been moved to jdk.internal.misc and is not available unless --add-export java.base/jdk.internal.misc=xyz is used when running the

Am trying to upgrade maven Struts 1.3 built using Java 1.7 to Java 1.8 and was able to successfully launch the application after changing all possible library files. Now, it has been instructed to upgrade the application to Java 11 or 12. Does Java 11 or 12 supports Struts 1.3 ? Can I proceed to make this changes? Your thoughts please. 来源： https://stackoverflow.com/questions/56521038/does-java-11-or-12-supports-struts-1-3