JDK属性获取
import java.io.ByteArrayOutputStream;
import java.io.OutputStreamWriter;
import java.nio.charset.Charset;
public class JDK {
public static void main(String[] args) {
System.out.println("Java的运行环境版本:" + System.getProperty("java.version"));
System.out.println("Java的运行环境供应商:" + System.getProperty("java.vendor"));
System.out.println("Java供应商的URL:" + System.getProperty("java.vendor.url"));
System.out.println("Java的安装路径:" + System.getProperty("java.home"));
System.out.println("Java的虚拟机规范版本:" + System.getProperty("java.vm.specification.version"));
System.out.println("Java的虚拟机规范供应商:" + System.getProperty("java.vm.specification.vendor"));
System.out.println("Java的虚拟机规范名称:" + System.getProperty("java.vm.specification.name"));
System.out.println("Java的虚拟机实现版本:" + System.getProperty("java.vm.version"));
System.out.println("Java的虚拟机实现供应商:" + System.getProperty("java.vm.vendor"));
System.out.println("Java的虚拟机实现名称:" + System.getProperty("java.vm.name"));
System.out.println("Java运行时环境规范版本:" + System.getProperty("java.specification.version"));
System.out.println("Java运行时环境规范供应商:" + System.getProperty("java.specification.vender"));
System.out.println("Java运行时环境规范名称:" + System.getProperty("java.specification.name"));
System.out.println("Java的类格式版本号:" + System.getProperty("java.class.version"));
System.out.println("Java的类路径:" + System.getProperty("java.class.path"));
System.out.println("加载库时搜索的路径列表:" + System.getProperty("java.library.path"));
System.out.println("默认的临时文件路径:" + System.getProperty("java.io.tmpdir"));
System.out.println("一个或多个扩展目录的路径:" + System.getProperty("java.ext.dirs"));
System.out.println("操作系统的名称:" + System.getProperty("os.name"));
System.out.println("操作系统的构架:" + System.getProperty("os.arch"));
System.out.println("操作系统的版本:" + System.getProperty("os.version"));
System.out.println("文件分隔符:" + System.getProperty("file.separator"));
System.out.println("路径分隔符:" + System.getProperty("path.separator"));
System.out.println("行分隔符:" + System.getProperty("line.separator"));
System.out.println("用户的账户名称:" + System.getProperty("user.name"));
System.out.println("用户的主目录:" + System.getProperty("user.home"));
System.out.println("用户的当前工作目录:" + System.getProperty("user.dir"));
System.out.println("mian入口类的文件编码:" + System.getProperty("file.encoding"));
System.out.println("系统文件编码:" + Charset.defaultCharset());
System.out.println("输出文件编码:" + new OutputStreamWriter(new ByteArrayOutputStream()).getEncoding());
}
}