java-9

问题 I created a simple Hello World main class and a module-info.java file within a Maven project in Eclipse Oxygen.1a Release (4.7.1a), running on Java 9.0.1. When I try to start the main class with right-click - Run As Java Application I get the error: Error occurred during initialization of boot layer java.lang.module.FindException: Module com.github.gv2011.quarry.modules.moda not found I can successfully run it from the command line from the target/classes directory: java -p . -m com.github

问题 I get following error on my project in Eclipse 4.7.0. I have jdk-9_windows-x64_bin.exe Resource: pom.xml Mavan dependency Problem (1 item) clientBuilder.sslSocketFactory not supported on JDK 9+ on mvn clean install in http://repo.maven.apache.org/maven2 was cached in the local repository , resolution will not be reattempted until the update interval of central has elapsed or updates are forced and 'parent.relativePath' points at wrong local POM @ line 5, column 10 -> [Help 2] [ERROR] [ERROR]

问题 I have a text file that contains multiple reports in it. Each report starts with a literal "REPORT ID" and have a specific value i.e ABCD. For simple case, I want to extract data of only those reports which have their value ABCD for example. And for complexity, I want to extract data of only those reports which have TAG1 value (2nd line)as 1000375351 and report value is same as ABCD. I have done it using traditional way. My decideAndExtract(String line) function have the required logic. But

问题 I try to migrate a Java8 project to Java9. The auto generated module-info.java contains an entry requires log4j; and an error is shown: log4j cannot be resolved to a module => How do I correctly include log4j as a module dependency with Java9? (I have the same issue for following dependencies: requires hibernate.core; requires hibernate.jpa.2.1.api; requires jcommander; requires junit; requires reflections; ) What I did so far: Installed Java 9.0.1 Upgraded Eclipse to Oxygen.1a Release (4.7

问题 OpenJDK 9's new Unified JVM Logging can filter logs by tags, but the JEP does not provide a list of all available tags. How can I list all available arguments? 回答1: java -Xlog:help prints the argument syntax, including the list of tags available in that particular version, which may change over time. Note that logging with -Xlog:<tag> may not print everything related to that tag since it requires the log message to only have that tag. Use -Xlog:<tag>* instead to include messages containing

问题 I have installed Android studio 3.0.1 and when i run the app he gives me an error Error running App: No JDK specified Note that i have installed JDK 9 and I made two environment variable JAVA_HOME and JDK_HOME and edit path variable and in project structure I choose JDK 9 but I am also failed to run!! 回答1: Try following, it did work for me: Go to File -> Project Structure -> SDK Location and check if the path for SDK and JDK location specified by you is correct. If its not then set the

问题 I have the same question as Find actual opened logfile with JDK Logging, except that I want to use an API that's supported by Java 9. In Java 8, I currently use nearly the same reflection hack as described in the answer to that question except that I look at the actual log file name instead of parsing the lockFileName. Here's my code: private static String logFileName = null; public static String getLogFileName() { // determined on demand and cached so we only need to do all of this the first

问题 I am creating a Spring Boot application on Java 9. If I keep parent as below in pom.xml: <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.1.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> and module-info.java as: module com.journaldev.spring.SpringWebflux { requires reactor.core; requires spring.web; requires spring.context; requires spring.webflux; requires spring.boot; requires spring

问题 I am starting a new maven project that should run with Spring Boot (in case that's relevant), and it compiled fine. But then, I decided to start using Java9-modules. So, I had eclipse generate the module-info.java file that looks like this: module BirdTreeModel { exports mjl.familytree.birdtree; requires junit; requires spring.boot; requires spring.boot.autoconfigure; requires spring.boot.test; requires spring.test; } This causes a compile error, however. Eclipse says: "Syntax error on token

问题 The documentation (https://docs.oracle.com/javase/9/tools/jlink.htm#JSWOR-GUID-CECAC52B-CFEE-46CB-8166-F17A8E9280E9) says: Level 1 -> Constant String sharing Level 2 -> zip My questions are: 1). Which strings get shared ? 2). Who share these strings ? 3). Compression in Level 2 does not create a zip file. Then how it is a zip compression ? 来源： https://stackoverflow.com/questions/48180953/what-are-the-algorithms-behind-the-level-1-and-level-2-compression-using-jlink