响应式网站要多久,大连建设网缴费查询,做俄罗斯生意网站,宁波是哪个省前言
弄了一下终于成功装上了#xff0c;这里对此进行一下总结
安装虚拟机
VMware虚拟机安装Ubuntu#xff08;超详细图文教程#xff09;_vmware安装ubuntu-CSDN博客https://blog.csdn.net/qq_43374681/article/details/129248167Download Ubuntu Desktop | Download | …前言
弄了一下终于成功装上了这里对此进行一下总结
安装虚拟机
VMware虚拟机安装Ubuntu超详细图文教程_vmware安装ubuntu-CSDN博客https://blog.csdn.net/qq_43374681/article/details/129248167Download Ubuntu Desktop | Download | Ubuntuhttps://ubuntu.com/download/desktop安装redhat虚拟机_怎么安装redhat的虚拟机-CSDN博客https://blog.csdn.net/weixin_64066303/article/details/130287039?spm1001.2014.3001.5501有了前面安装红帽的经验我相信Ubuntu的安装是得心应手了。 安装Java
Ubuntu下安装Java_ubuntu安装java-CSDN博客https://blog.csdn.net/JqlScala/article/details/133462691直接可以指令安装
更新所有软件包
sudo apt update安装默认Java运行时环境JRE sudo apt install default-jre安装Java开发工具包JDK sudo apt install default-jdk验证是否安装成功
rootfeng-virtual-machine:~# java -version
openjdk version 11.0.22 2024-01-16
OpenJDK Runtime Environment (build 11.0.227-post-Ubuntu-0ubuntu222.04.1)
OpenJDK 64-Bit Server VM (build 11.0.227-post-Ubuntu-0ubuntu222.04.1, mixed mode, sharing)安装Scala
All Available Versions | The Scala Programming Language (scala-lang.org)https://www.scala-lang.org/download/all.htmlSpark学习进度十五虚拟机ubuntu安装scala和使用 - 细胞何 - 博客园 (cnblogs.com)https://www.cnblogs.com/hwh000/p/12310651.html 然后按照他的步骤解压和配置环境。
添加/usr/local/scala是自己的安装路径
export SCALA_HOME/usr/local/scala
export PATH${SCALA_HOME}/bin:$PATH 使环境变量生效
source /etc/profile
rootfeng-virtual-machine:~# scala -version
Scala code runner version 2.11.8 -- Copyright 2002-2016, LAMP/EPFL但是结果出现了
rootfeng-virtual-machine:/usr/local/scala# ./bin/scala
Exception in thread main java.lang.NoClassDefFoundError: javax/script/Compilableat scala.tools.nsc.interpreter.ILoop.createInterpreter(ILoop.scala:118)at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:911)at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)at scala.reflect.internal.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:97)at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:909)at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:74)./bin/scala出错Exception in thread “main“java. lang . NoClassDefFoundError: javax/script/Compilable_exception in thread main java.lang.noclassdeffou-CSDN博客https://blog.csdn.net/weixin_52350007/article/details/120569898推测是版本不兼容的问题然后我找到了一个选择版本的
JDK Compatibility | Scala Documentation (scala-lang.org)https://docs.scala-lang.org/overviews/jdk-compatibility/overview.html 因为JDK显示是11之后我安装了2.11.12版本的Scala还是失败了然后安装3.0.0的没有明显的下载文件只有一个GitHub的地址。 所以我选择下载2.13.0的版本。 按照同样的方法结果又可以了。
rootfeng-virtual-machine:/usr/local/scala/bin# scala
Welcome to Scala 2.13.0 (OpenJDK 64-Bit Server VM, Java 11.0.22).
Type in expressions for evaluation. Or try :help.scala println(Hello World!)
Hello World!scala 虽然是出现了一个警告但是还是可以运行。
rootfeng-virtual-machine:~# cd /usr/local/scala
rootfeng-virtual-machine:/usr/local/scala# sudo mkdir mycode
rootfeng-virtual-machine:/usr/local/scala# cd ./mycode
rootfeng-virtual-machine:/usr/local/scala/mycode# ls
rootfeng-virtual-machine:/usr/local/scala/mycode# sudo vim HelloWorld.scala
rootfeng-virtual-machine:/usr/local/scala/mycode# ls
HelloWorld.scala
rootfeng-virtual-machine:/usr/local/scala/mycode# scalac HelloWorld.scala
warning: there was one deprecation warning (since 2.13.0); re-run with -deprecation for details
one warning found
rootfeng-virtual-machine:/usr/local/scala/mycode# ls
HelloWorld$.class HelloWorld.class HelloWorld.scala
rootfeng-virtual-machine:/usr/local/scala/mycode# scala -classpath . HelloWorld
Hello World!
rootfeng-virtual-machine:/usr/local/scala/mycode# ls
HelloWorld$.class HelloWorld.class HelloWorld.scala
rootfeng-virtual-machine:/usr/local/scala/mycode# cat HelloWorld.scalaobject HelloWorld{def main(args: Array[String]){println(Hello World!)}
}
rootfeng-virtual-machine:/usr/local/scala/mycode# 按要求加上deprecation参数显示该语法被弃用了。
rootfeng-virtual-machine:/usr/local/scala/mycode# scalac -deprecation HelloWorld.scala
HelloWorld.scala:3: warning: procedure syntax is deprecated: instead, add : Unit to explicitly declare mains return typedef main(args: Array[String]){^
one warning found按照要求修改之后就可以了,添加 :Unit
rootfeng-virtual-machine:/usr/local/scala/mycode# scalac HelloWorld.scala
rootfeng-virtual-machine:/usr/local/scala/mycode# cat HelloWorld.scala
object HelloWorld{def main(args: Array[String]): Unit{println(Hello World!)}
}
rootfeng-virtual-machine:/usr/local/scala/mycode# ls
HelloWorld$.class HelloWorld.class HelloWorld.scala
rootfeng-virtual-machine:/usr/local/scala/mycode# scala -classpath . HelloWorld
Hello World!
rootfeng-virtual-machine:/usr/local/scala/mycode# FinalShell
FinalShell官网 (hostbuf.com)https://www.hostbuf.com/这里还有一个软件感兴趣的小伙伴可以尝试一下在windows系统下连接Linux的虚拟机。
其中“名称”是自己起“主机”是用ifconfig指令查看“端口”默认是22认证是root密码就是root的密码。密码不知道可以设置一下。
【ubuntu】设置root用户密码_ubuntu设置root用户密码-CSDN博客https://blog.csdn.net/weixin_43500200/article/details/131118075我的是inet 192.168.92.130
rootfeng-virtual-machine:~# ifconfig
ens33: flags4163UP,BROADCAST,RUNNING,MULTICAST mtu 1500inet 192.168.92.130 netmask 255.255.255.0 broadcast 192.168.92.255inet6 fe80::5c97:a5d8:e86f:ce76 prefixlen 64 scopeid 0x20linkether 00:0c:29:5f:3c:62 txqueuelen 1000 (以太网)RX packets 279948 bytes 161217845 (161.2 MB)RX errors 42 dropped 42 overruns 0 frame 0TX packets 385434 bytes 102925217 (102.9 MB)TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0device interrupt 19 base 0x2000 lo: flags73UP,LOOPBACK,RUNNING mtu 65536inet 127.0.0.1 netmask 255.0.0.0inet6 ::1 prefixlen 128 scopeid 0x10hostloop txqueuelen 1000 (本地环回)RX packets 7077 bytes 854481 (854.4 KB)RX errors 0 dropped 0 overruns 0 frame 0TX packets 7077 bytes 854481 (854.4 KB)TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0当然输入密码的时候密码不会回显。
rootfeng-virtual-machine:~# sudo passwd root
新的密码
重新输入新的密码
passwd已成功更新密码
rootfeng-virtual-machine:~# 补 决定还是安装新版的ScalaJDK还是17Scala选择了3.3.3.
Java Downloads | Oraclehttps://www.oracle.com/java/technologies/downloads/#java17
# sudo dpkg -i jdk-17_linux-x64_bin.deb
# java -versionjava version 17.0.10 2024-01-16 LTS
Java(TM) SE Runtime Environment (build 17.0.1011-LTS-240)
Java HotSpot(TM) 64-Bit Server VM (build 17.0.1011-LTS-240, mixed mode, sharing)
rootfeng-virtual-machine:~# 然后使用了Scala结果报错了。
scala println(hello world)
java.io.IOError: java.lang.RuntimeException: /packages cannot be represented as URIat java.base/jdk.internal.jrtfs.JrtPath.toUri(JrtPath.java:175)at scala.tools.nsc.classpath.JrtClassPath.asURLs(DirectoryClassPath.scala:216)at scala.tools.nsc.classpath.AggregateClassPath.$anonfun$asURLs$1(AggregateClassPath.scala:63)at scala.collection.StrictOptimizedIterableOps.flatMap(StrictOptimizedIterableOps.scala:118)at scala.collection.StrictOptimizedIterableOps.flatMap$(StrictOptimizedIterableOps.scala:105)at scala.collection.immutable.Vector.flatMap(Vector.scala:113)at scala.tools.nsc.classpath.AggregateClassPath.asURLs(AggregateClassPath.scala:63)at scala.tools.nsc.interpreter.IMain.compilerClasspath(IMain.scala:93)at scala.tools.nsc.interpreter.IMain.makeClassLoader(IMain.scala:352)at scala.tools.nsc.interpreter.IMain.ensureClassLoader(IMain.scala:275)at scala.tools.nsc.interpreter.IMain.classLoader(IMain.scala:278)at scala.tools.nsc.interpreter.IMain.runtimeMirror$lzycompute(IMain.scala:168)at scala.tools.nsc.interpreter.IMain.runtimeMirror(IMain.scala:168)at scala.tools.nsc.interpreter.IMain.$anonfun$getModuleIfDefined$1(IMain.scala:177)at scala.tools.nsc.interpreter.IMain.getModuleIfDefined(IMain.scala:170)at scala.tools.nsc.interpreter.IMain.readRootPath(IMain.scala:289)at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.resolvePathToSymbol(IMain.scala:662)at scala.tools.nsc.interpreter.IMain$Request.resultSymbol$lzycompute(IMain.scala:919)at scala.tools.nsc.interpreter.IMain$Request.resultSymbol(IMain.scala:918)at scala.tools.nsc.interpreter.IMain$Request.typeOf$lzycompute(IMain.scala:930)at scala.tools.nsc.interpreter.IMain$Request.typeOf(IMain.scala:935)at scala.tools.nsc.interpreter.IMain$Request.compile(IMain.scala:897)at scala.tools.nsc.interpreter.IMain.compile(IMain.scala:493)at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:487)at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:470)at scala.tools.nsc.interpreter.shell.ILoop.interpretStartingWith(ILoop.scala:930)at scala.tools.nsc.interpreter.shell.ILoop.command(ILoop.scala:787)at scala.tools.nsc.interpreter.shell.ILoop.processLine(ILoop.scala:462)at scala.tools.nsc.interpreter.shell.ILoop.loop(ILoop.scala:485)at scala.tools.nsc.interpreter.shell.ILoop.run(ILoop.scala:1019)at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:87)at scala.tools.nsc.MainGenericRunner.run$1(MainGenericRunner.scala:91)at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:102)at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:107)at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
Caused by: java.lang.RuntimeException: /packages cannot be represented as URI... 35 moreThat entry seems to have slain the compiler. Shall I replay
your session? I can re-run each line except the last one.
[y/n]于是按照前面的要求下载的3.3.3版本的Scala。
Release 3.3.3 · lampepfl/dotty (github.com)https://github.com/lampepfl/dotty/releases/tag/3.3.3
# sudo tar -zxvf scala3-3.3.3.tar.gz -C /usr/local
# scala -version
Scala code runner version 3.3.3 -- Copyright 2002-2024, LAMP/EPFLscala println(hello world)
hello world
