• System 对象解析


    System 对象解析

    - 一个xxx对象 ,有什么作用
    
    • 1

    property

    KeyValue
    java.runtime.nameJava运行时名称Java™ SE Runtime Environment
    sun.boot.library.path库路径C:\Program Files\Java\jdk1.8.0_202\jre\bin
    java.vm.version125.202-b08
    java.vm.vendor1Oracle Corporation
    java.vendor.url1http://java.oracle.com/
    path.separator1;
    java.vm.name1Java HotSpot™ 64-Bit Server VM
    file.encoding.pkg1sun.io
    user.script1
    user.country1CN
    sun.java.launcher1SUN_STANDARD
    sun.os.patch.level1
    java.vm.specification.name1Java Virtual Machine Specification
    user.dir1D:\软极\RJproject\utils
    java.runtime.version11.8.0_202-b08
    java.awt.graphicsenv1sun.awt.Win32GraphicsEnvironment
    java.endorsed.dirs1C:\Program Files\Java\jdk1.8.0_202\jre\lib\endorsed
    os.arch1amd64
    java.io.tmpdir1C:\Users\hejia\AppData\Local\Temp\
    line.separator1
    java.vm.specification.vendor1Oracle Corporation
    user.variant1
    os.name操作系统名称Windows 10
    sun.jnu.encoding字符集GBK
    java.library.path1C:\Program Files\Java\jdk1.8.0_202\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;D:\App\vmware\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\Program Files\Java\jdk1.8.0_202\bin;D:\App\Data\javaDev\apache-maven-3.8.3\bin;D:\App\git\Git\cmd;D:\JAVA\apache-tomcat-8.5.76-windows-x64\apache-tomcat-8.5.76\bin;D:\JAVA\apache-tomcat-8.5.76-windows-x64\apache-tomcat-8.5.76\lib;;C:\Program Files (x86)\Tencent\微信web开发者工具\dll;C:\Users\hejia\AppData\Local\Microsoft\WindowsApps;;D:\App\Microsoft VS Code\bin;C:\Users\hejia\AppData\Local\Programs\Fiddler;.
    java.specification.name1Java Platform API Specification
    java.class.version版本52.0
    sun.management.compiler1HotSpot 64-Bit Tiered Compilers
    os.version110.0
    user.home1C:\Users\hejia
    user.timezone1
    java.awt.printerjob1sun.awt.windows.WPrinterJob
    file.encoding文件字符集UTF-8
    java.specification.version11.8
    user.name当前系统账户hejia
    java.class.path1C:\Program Files\Java\jdk1.8.0_202\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\rt.jar;D:\软极\RJproject\utils\target\classes;D:\App\Data\javaDev\MavenRepository\org\springframework\boot\spring-boot-starter\2.7.2\spring-boot-starter-2.7.2.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\boot\spring-boot\2.7.2\spring-boot-2.7.2.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\spring-context\5.3.22\spring-context-5.3.22.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\boot\spring-boot-autoconfigure\2.7.2\spring-boot-autoconfigure-2.7.2.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\boot\spring-boot-starter-logging\2.7.2\spring-boot-starter-logging-2.7.2.jar;D:\App\Data\javaDev\MavenRepository\ch\qos\logback\logback-classic\1.2.11\logback-classic-1.2.11.jar;D:\App\Data\javaDev\MavenRepository\ch\qos\logback\logback-core\1.2.11\logback-core-1.2.11.jar;D:\App\Data\javaDev\MavenRepository\org\apache\logging\log4j\log4j-to-slf4j\2.17.2\log4j-to-slf4j-2.17.2.jar;D:\App\Data\javaDev\MavenRepository\org\apache\logging\log4j\log4j-api\2.17.2\log4j-api-2.17.2.jar;D:\App\Data\javaDev\MavenRepository\org\slf4j\jul-to-slf4j\1.7.36\jul-to-slf4j-1.7.36.jar;D:\App\Data\javaDev\MavenRepository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\spring-core\5.3.22\spring-core-5.3.22.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\spring-jcl\5.3.22\spring-jcl-5.3.22.jar;D:\App\Data\javaDev\MavenRepository\org\yaml\snakeyaml\1.30\snakeyaml-1.30.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\boot\spring-boot-starter-web\2.7.2\spring-boot-starter-web-2.7.2.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\boot\spring-boot-starter-json\2.7.2\spring-boot-starter-json-2.7.2.jar;D:\App\Data\javaDev\MavenRepository\com\fasterxml\jackson\core\jackson-databind\2.13.3\jackson-databind-2.13.3.jar;D:\App\Data\javaDev\MavenRepository\com\fasterxml\jackson\core\jackson-annotations\2.13.3\jackson-annotations-2.13.3.jar;D:\App\Data\javaDev\MavenRepository\com\fasterxml\jackson\core\jackson-core\2.13.3\jackson-core-2.13.3.jar;D:\App\Data\javaDev\MavenRepository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.13.3\jackson-datatype-jdk8-2.13.3.jar;D:\App\Data\javaDev\MavenRepository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.13.3\jackson-datatype-jsr310-2.13.3.jar;D:\App\Data\javaDev\MavenRepository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.13.3\jackson-module-parameter-names-2.13.3.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\boot\spring-boot-starter-tomcat\2.7.2\spring-boot-starter-tomcat-2.7.2.jar;D:\App\Data\javaDev\MavenRepository\org\apache\tomcat\embed\tomcat-embed-core\9.0.65\tomcat-embed-core-9.0.65.jar;D:\App\Data\javaDev\MavenRepository\org\apache\tomcat\embed\tomcat-embed-el\9.0.65\tomcat-embed-el-9.0.65.jar;D:\App\Data\javaDev\MavenRepository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.65\tomcat-embed-websocket-9.0.65.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\spring-web\5.3.22\spring-web-5.3.22.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\spring-beans\5.3.22\spring-beans-5.3.22.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\spring-webmvc\5.3.22\spring-webmvc-5.3.22.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\spring-aop\5.3.22\spring-aop-5.3.22.jar;D:\App\Data\javaDev\MavenRepository\org\springframework\spring-expression\5.3.22\spring-expression-5.3.22.jar;D:\App\Data\javaDev\MavenRepository\org\projectlombok\lombok\1.18.24\lombok-1.18.24.jar;D:\App\Data\javaDev\MavenRepository\jakarta\xml\bind\jakarta.xml.bind-api\2.3.3\jakarta.xml.bind-api-2.3.3.jar;D:\App\Data\javaDev\MavenRepository\jakarta\activation\jakarta.activation-api\1.2.2\jakarta.activation-api-1.2.2.jar;D:\App\Data\javaDev\MavenRepository\javax\mail\mail\1.4.7\mail-1.4.7.jar;D:\App\Data\javaDev\MavenRepository\javax\activation\activation\1.1\activation-1.1.jar;D:\App\Data\javaDev\MavenRepository\com\alibaba\easyexcel\3.1.1\easyexcel-3.1.1.jar;D:\App\Data\javaDev\MavenRepository\com\alibaba\easyexcel-core\3.1.1\easyexcel-core-3.1.1.jar;D:\App\Data\javaDev\MavenRepository\com\alibaba\easyexcel-support\3.1.1\easyexcel-support-3.1.1.jar;D:\App\Data\javaDev\MavenRepository\org\apache\poi\poi\4.1.2\poi-4.1.2.jar;D:\App\Data\javaDev\MavenRepository\commons-codec\commons-codec\1.15\commons-codec-1.15.jar;D:\App\Data\javaDev\MavenRepository\org\apache\commons\commons-collections4\4.4\commons-collections4-4.4.jar;D:\App\Data\javaDev\MavenRepository\org\apache\commons\commons-math3\3.6.1\commons-math3-3.6.1.jar;D:\App\Data\javaDev\MavenRepository\com\zaxxer\SparseBitSet\1.2\SparseBitSet-1.2.jar;D:\App\Data\javaDev\MavenRepository\org\apache\poi\poi-ooxml\4.1.2\poi-ooxml-4.1.2.jar;D:\App\Data\javaDev\MavenRepository\org\apache\commons\commons-compress\1.19\commons-compress-1.19.jar;D:\App\Data\javaDev\MavenRepository\com\github\virtuald\curvesapi\1.06\curvesapi-1.06.jar;D:\App\Data\javaDev\MavenRepository\org\apache\poi\poi-ooxml-schemas\4.1.2\poi-ooxml-schemas-4.1.2.jar;D:\App\Data\javaDev\MavenRepository\org\apache\xmlbeans\xmlbeans\3.1.0\xmlbeans-3.1.0.jar;D:\App\Data\javaDev\MavenRepository\org\apache\commons\commons-csv\1.8\commons-csv-1.8.jar;D:\App\Data\javaDev\MavenRepository\org\ehcache\ehcache\3.10.0\ehcache-3.10.0.jar;D:\App\Data\javaDev\MavenRepository\javax\cache\cache-api\1.1.1\cache-api-1.1.1.jar;D:\App\Data\javaDev\MavenRepository\org\glassfish\jaxb\jaxb-runtime\2.3.6\jaxb-runtime-2.3.6.jar;D:\App\Data\javaDev\MavenRepository\org\glassfish\jaxb\txw2\2.3.6\txw2-2.3.6.jar;D:\App\Data\javaDev\MavenRepository\com\sun\istack\istack-commons-runtime\3.0.12\istack-commons-runtime-3.0.12.jar;D:\App\Data\javaDev\MavenRepository\com\sun\activation\jakarta.activation\1.2.2\jakarta.activation-1.2.2.jar;D:\App\Data\javaDev\MavenRepository\org\slf4j\slf4j-api\1.7.36\slf4j-api-1.7.36.jar;D:\App\Idea\IntelliJ IDEA 2021.2.3\lib\idea_rt.jar
    java.vm.specification.version11.8
    sun.arch.data.model164
    java.home1C:\Program Files\Java\jdk1.8.0_202\jre
    sun.java.command1com.example.utils.file.FileUtil
    java.specification.vendor1Oracle Corporation
    user.language1zh
    awt.toolkit1sun.awt.windows.WToolkit
    java.vm.info1mixed mode
    java.version11.8.0_202
    java.ext.dirs1C:\Program Files\Java\jdk1.8.0_202\jre\lib\ext;C:\Windows\Sun\Java\lib\ext
    sun.boot.class.path1C:\Program Files\Java\jdk1.8.0_202\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\rt.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_202\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_202\jre\classes
    java.vendor1Oracle Corporation
    file.separator1\
    java.vendor.url.bug1http://bugreport.sun.com/bugreport/
    sun.cpu.endian1little
    sun.io.unicode.encoding1UnicodeLittle
    sun.desktop1windows
    sun.cpu.isalist1amd64
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  • 原文地址:https://blog.csdn.net/qq_41149775/article/details/126361408