Java8 打印系统参数

代码

    public static void main(String[] args) {
        System.getProperties().entrySet().stream().forEach(entity -> {
            System.out.println(String.format("%s: %s", entity.getKey(), entity.getValue()));
        });
    }

打印结果

java.runtime.name: Java(TM) SE Runtime Environment
sun.boot.library.path: /Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib
java.vm.version: 25.65-b01
user.country.format: CN
gopherProxySet: false
java.vm.vendor: Oracle Corporation
java.vendor.url: http://java.oracle.com/
path.separator: :
java.vm.name: Java HotSpot(TM) 64-Bit Server VM
file.encoding.pkg: sun.io
user.country: US
sun.java.launcher: SUN_STANDARD
sun.os.patch.level: unknown
java.vm.specification.name: Java Virtual Machine Specification
user.dir: /Users/eric/Projects/sample-java-servlet
java.runtime.version: 1.8.0_65-b17
java.awt.graphicsenv: sun.awt.CGraphicsEnvironment
java.endorsed.dirs: /Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/endorsed
os.arch: x86_64
java.io.tmpdir: /var/folders/2x/65r35n150q118b_chsszlh1c0000gn/T/
line.separator: 

java.vm.specification.vendor: Oracle Corporation
os.name: Mac OS X
sun.jnu.encoding: UTF-8
java.library.path: /Users/eric/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.
java.specification.name: Java Platform API Specification
java.class.version: 52.0
sun.management.compiler: HotSpot 64-Bit Tiered Compilers
os.version: 10.13.3
user.home: /Users/eric
user.timezone: 
java.awt.printerjob: sun.lwawt.macosx.CPrinterJob
file.encoding: UTF-8
java.specification.version: 1.8
java.class.path: /Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/jfxswt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/lib/packager.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/lib/tools.jar:/Users/eric/Projects/sample-java-servlet/out/production/classes:/Users/eric/.gradle/caches/modules-2/files-2.1/com.aukletapm.go/go-servlet/1.4.0/e0e52216e6566c40cd92c212aa6287497e2bc3c5/go-servlet-1.4.0.jar:/Users/eric/.gradle/caches/modules-2/files-2.1/com.aukletapm.go/go/1.4.0/7ff2aa8a8c77c6f6bfcca35084e001e21369b97a/go-1.4.0.jar:/Users/eric/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-databind/2.8.8/bf88c7b27e95cbadce4e7c316a56c3efffda8026/jackson-databind-2.8.8.jar:/Users/eric/.gradle/caches/modules-2/files-2.1/org.slf4j/slf4j-api/1.7.25/da76ca59f6a57ee3102f8f9bd9cee742973efa8a/slf4j-api-1.7.25.jar:/Users/eric/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk8/1.2.21/86407aed2dc197bd5f61d16e759c4ff43678732a/kotlin-stdlib-jdk8-1.2.21.jar:/Users/eric/.gradle/caches/modules-2/files-2.1/com.google.guava/guava/19.0/6ce200f6b23222af3d8abb6b6459e6c44f4bb0e9/guava-19.0.jar:/Users/eric/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-annotations/2.8.0/45b426f7796b741035581a176744d91090e2e6fb/jackson-annotations-2.8.0.jar:/Users/eric/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-core/2.8.8/d478fb6de45a7c3d2cad07c8ad70c7f0a797a020/jackson-core-2.8.8.jar:/Users/eric/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.2.21/d64187eb2d9d1521be3421aa8c6774a8625cdde8/kotlin-stdlib-1.2.21.jar:/Users/eric/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk7/1.2.21/88bfff5aa470143a83b0bc5ec00c0be8cabd7cad/kotlin-stdlib-jdk7-1.2.21.jar:/Users/eric/.gradle/caches/modules-2/files-2.1/org.jetbrains/annotations/13.0/919f0dfe192fb4e063e7dacadee7f8bb9a2672a9/annotations-13.0.jar:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar
user.name: eric
java.vm.specification.version: 1.8
sun.java.command: com.aukletapm.go.sample.App
java.home: /Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre
sun.arch.data.model: 64
user.language: en
java.specification.vendor: Oracle Corporation
awt.toolkit: sun.lwawt.macosx.LWCToolkit
java.vm.info: mixed mode
java.version: 1.8.0_65
java.ext.dirs: /Users/eric/Library/Java/Extensions:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java
sun.boot.class.path: /Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/sunrsasign.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/classes
java.vendor: Oracle Corporation
file.separator: /
java.vendor.url.bug: http://bugreport.sun.com/bugreport/
sun.io.unicode.encoding: UnicodeBig
sun.cpu.endian: little
sun.cpu.isalist: