Java如何获取系统属性信息？
package org.nhooo.example.management;
import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
import java.util.Map;
import java.util.Set;
public class GetSystemProperties {
public static void main(String[] args) {
RuntimeMXBean bean = ManagementFactory.getRuntimeMXBean();
//返回所有系统的名称和值的映射
//属性。此方法调用System.getProperties()
//获取所有系统属性。其属性
//名称或值不是字符串将被省略。
Map<String, String> systemProperties = bean.getSystemProperties();
Set<String> keys = systemProperties.keySet();
for (String key : keys) {
String value = systemProperties.get(key);
System.out.printf("Property[%s] = %s.%n", key, value);
}
}
}上面的代码片段捕获的一些属性信息是：
Property[java.vm.vendor] = Oracle Corporation. Property[sun.arch.data.model] = 64. Property[java.vendor.url] = http://java.oracle.com/. Property[user.timezone] = . Property[user.country.format] = ID. Property[os.name] = Mac OS X. Property[java.vm.specification.version] = 1.8. Property[user.country] = US. Property[sun.java.launcher] = SUN_STANDARD. Property[sun.boot.library.path] = /Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/jre/lib. Property[sun.java.command] = org.nhooo.example.management.GetSystemProperties. Property[http.nonProxyHosts] = local|*.local|169.254/16|*.169.254/16. Property[sun.cpu.endian] = little. Property[user.home] = /Users/wsaryada. Property[user.language] = en. Property[java.specification.vendor] = Oracle Corporation. Property[java.home] = /Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/jre. Property[file.separator] = /. Property[line.separator] = . Property[java.vm.specification.vendor] = Oracle Corporation. Property[java.specification.name] = Java Platform API Specification. Property[java.awt.graphicsenv] = sun.awt.CGraphicsEnvironment.