遍历Properties的值

第一种遍历：

	Properties p=System.getProperties();
	for(Enumeration e=p.propertyNames(); e.hasMoreElements();){
		String key=(String) e.nextElement();
		System.out.println(key+"===>"+p.getProperty(key));
	}

第二种遍历：

	Properties p=System.getProperties();
		for(Object t:p.keySet()){
			System.out.println(t+"="+p.getProperty(t.toString()));
		}

import java.util.*;
class TestSystem 
{
	public static void main(String[] args) 
	{

		Map<String ,String> map = System.getenv();
		//System.out.println(map);
	    // 遍历系统Map中system
		for(String name:map.keySet()){
		System.out.println(name+"->>>>>>>>"+map.get(name));
		}
        System.out.println(System.getenv("JAVA_HOME"));
        
		Properties p=System.getProperties();

         //遍历一下properties里面的值
         for(Enumeration e=p.propertyNames(); e.hasMoreElements();){  
         String key=(String) e.nextElement();  
         System.out.println(key+"===>"+p.getProperty(key));  
          }  

	
         // System.out.println(p);
		System.out.println(System.getProperty("os.name"));

	}
}