Java 基础一些代码练习笔记（Propertise环境变量）

package com.lee;import java.util.Iterator;import java.util.Properties;import java.util.Set;public class PropertiseTest{public static void main(String[] args){Properties p = System.getProperties();Set set = p.keySet();for(Iterator iter = set.iterator(); iter.hasNext();){String key = (String)iter.next();String value = (String)p.getProperty(key);System.out.println(key + "=" + value);}}}