jre

"C:\Program Files\Java\jdk1.8.0_191\bin\java.exe" -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=2692 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=localhost -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:D:\Program Files\JetBrains\ideaIU-2018.1.2.win\lib\idea_rt.jar=2693:D:\Program Files\JetBrains\ideaIU-2018.1.2.win\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_191\jre

Digest：今天Spring Boot 应用启动成功，访问接口出现如下错误，不知到导致问题关键所在，记录一下这个问题。 "C:\Program Files\Java\jdk1.8.0_144\bin\java.exe" -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:D:\IntelliJ IDEA 2019.1.3\lib\idea_rt.jar=59755:D:\IntelliJ IDEA 2019.1.3\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_144\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_144\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_144\jre\lib\ext

1.java发展历史 1991年 詹姆斯·高斯林 （James Gosling) SUN公司Green项目（消费类电子产品） Oak 后来叫Java 1995年 推出 Java测试版 1996年 JDK1.0 1997年 JDK1.1 1998年 JDK1.2 革命性的版本 更名 Java2 2004年 J2SE 5.0(1.5) Tiger 老虎 2006年 J2SE 6.0(1.6)Mustang 野马 2011年 J2SE 7.0 Dolphin 海豚 2014年 JavaSE 8.0 2017年 9 月 22 日，Java 9 （每 6 个月一个版本） 2018年 3 月 21 日，Java 10 正式发布 2018年 9 月 26 日，Java 11 2019年 3 月 20日，Java 12 2019年9月17日, Java13 2.Java核心优势 ，特性 跨平台 建立了强大的生态体系 IT行业“第一大语言” 安全 ，面向对象，简单，高性能，分布式，多线程，健壮性 3.Java版本 javaSE 标准版 桌面应用 javaEE 企业版 服务器端应用 javaME 微型版 消费性电子产品 4.java运行机制 编写代码-->编译---->解释运行 计算机高级语言分为编译型，解释型两种，Java是两种类型的结合。 （C，C++编译型 PHP，Javasript

JRE　　(Java Runtime Enviorment)：是Java程序的运行环境，包含JVM和运行时所需要的核心类库。 JDK　　(Java Development Kit):　　是Java程序开发的工具包,包含JRE和开发人员使用的工具包。 我们想要安装一个已有的Java程序，只需要安装JRE，想开发一个全新的Java程序，必须安装一个JDK。 来源： https://www.cnblogs.com/Water-Reincarnation/p/11779910.html

Basically, an installation of Tomcat is running under the default JRE which can be found based on environment variables ( JAVA_HOME ), or registry entries (on Windows) or the JRE is specified during installation (Tomcat is installed as a service). Sometimes we need to change the default JRE for Tomcat, either for testing purposes or to run Tomcat under a targeted version of JRE. In this article, we summarize different ways to change JRE for a Tomcat installation. To know which JRE version is used for Tomcat, go to the following URL: localhost:8080/manager/status And look at the JVM Version

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm having trouble with a brand new project in a brand new installation of Eclipse. Repro steps: Download this version of Eclipse: http://www.eclipse.org/downloads/packages/eclipse-ide-java-developers/heliosr Unzip to c:\program files\eclipse java Launch Eclipse; choose a workspace File > New > Java Project Project name: Hello World . JRE: "Use an execution environment JRE: JavaSE-1.7" Hit Next , go to the Libraries tab. The only entry is JRE System Library [JavaSE-1.7] (unbound) . What does "unbound" mean? How do I fix it? Hit Finish .

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Java JDK or JRE or both are specifications? Can anyone quote some relevant implementations? 回答1: The JDK (Java Developer Kit) and JRE (Java Runtime Environment) are (in part) both implementations of the Java Language Specification and The Java Virtual Machine Specification . JRE and JDK may or may not refer to the Sun JRE and Sun JDK depending on context. You can see this list of JVMs (Java Virtual Machines). There are also third-party java compilers, the most popular being ecj and gcj. 回答2: JDK means Java Development Kit. it provides you a

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: After setting our domain users to support AES encryption for Kerberos tokens (Windows Server 2008R2), on a web-application server side we get the following exception: GSSException: Failure unspecified at GSS-API level (Mechanism level: Encryption type AES256CTS mode with HMAC SHA1-96 is not supported/enabled) Strangely we have Java 6 (1.6.0_27) , which means that AES should be supported, according to this document: http://docs.oracle.com/javase/6/docs/technotes/guides/security/jgss/jgss-features.html Any ideas what's missing in our web

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm attempting to bundle the JRE into my exe using launch4j. My folder structure is as follows- |- test |- jre(copied from my windows installation of jre) |-bin |-lib |- jretest.jar (the jar file I am using to create my exe) |- jretest.exe (the output exe file) In Launch4j, I have set the Bundled JRE Path as jre . The exe works fine so far. However, when i copy my exe file elsewhere and run it, I get the error message This application was configured to use a bundled Java Runtime Environment but the runtime is missing or corrupted . I have

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I installed java and set path to environment and when I execute echo $JAVA_HOME I get the following output: /usr/lib/jvm/java-7-oracle/jre/bin/java I Also installed apache-maven and changed environment file and now it looks like this: JAVA_HOME="/usr/lib/jvm/java-7-oracle/jre/bin/java" M2_HOME=/usr/local/apache-maven/apache-maven-3.0.5 M2=$M2_HOME/bin MAVEN_OPTS="-Xms256m -Xmx512m" PATH=$M2:$PATH But when I execute mvn --version I get a warning: Error: JAVA_HOME is not defined correctly. We cannot execute /usr/lib/jvm/java-7-oracle/jre/bin