博客来源：

有时候不理解自己电脑运行时环境，那么可以以使用如下方法获取到电脑中的配置信息

 话不多说，上代码

String[] srr = {"os.name","os.arch","os.version","file.separator","path.separator","line.separator",
                "java.home","java.class.version","java.class.path","java.library.path","java.compiler"
                ,"java.io.tmpdir","java.ext.dirs","user.name","user.home","user.dir"
                , "java.version", "java.vendor", "java.vendor.url", "java.vm.specification.version", "java.vm.specification.vendor", "java.vm.specification.name","file.encoding"
                , "java.vm.version", "java.vm.vendor", "java.vm.name", "java.specification.version", "java.specification.vendor", "java.specification.name"
        };
        System.out.println(srr.length);
        for (int i = 0; i < srr.length; i++) {
            String s = (i+1)+"\t"+srr[i]+":\t"+ System.getProperty(srr[i]);
            System.out.println(s);
        }

29
1    os.name:    Windows 10
2    os.arch:    amd64
3    os.version:    10.0
4    file.separator:    \
5    path.separator:    ;
6    line.separator:    

7    java.home:    C:\Program Files\Java\jdk1.8.0_191\jre
8    java.class.version:    52.0
9    java.class.path:    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
10    java.library.path:    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
11    java.compiler:    null
12    java.io.tmpdir:    C:\Users\21052\AppData\Local\Temp\
13    java.ext.dirs:    C:\Program Files\Java\jdk1.8.0_191\jre\lib\ext;C:\WINDOWS\Sun\Java\lib\ext
14    user.name:    xxxxxxxxxxxxxxxxxxxxxxxxxx
15    user.home:    C:\Users\21052
16    user.dir:    D:\MySoftware\Spring\component
17    java.version:    1.8.0_191
18    java.vendor:    Oracle Corporation
19    java.vendor.url:    http://java.oracle.com/
20    java.vm.specification.version:    1.8
21    java.vm.specification.vendor:    Oracle Corporation
22    java.vm.specification.name:    Java Virtual Machine Specification
23    file.encoding:    UTF-8
24    java.vm.version:    25.191-b12
25    java.vm.vendor:    Oracle Corporation
26    java.vm.name:    Java HotSpot(TM) 64-Bit Server VM
27    java.specification.version:    1.8
28    java.specification.vendor:    Oracle Corporation
29    java.specification.name:    Java Platform API Specification