这篇文章主要介绍了java 读取系统Properties代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

java读取系统Properties 属性，针对配置较多的属性值，单独打印，实现代码如下：

import java.util.*; public class PropertiesTest { public static void main(String[] args) { Properties properties = System.getProperties(); PropertiesTest pt = new PropertiesTest(); Map<String,String> map = pt.getSpecialMap(properties); //便于方便读取，配置较多的属性打印出来 pt.showMap(map); } Map<String,String> getSpecialMap(Properties properties){ Set<Map.Entry<Object,Object>> props = properties.entrySet(); Map<String,String> map = new HashMap<String, String>(); Iterator<Map.Entry<Object, Object>> it = props.iterator(); while (it.hasNext()) { Map.Entry<Object,Object> entry = it.next(); System.out.println("key= " + entry.getKey() ); System.out.println("value= " + entry.getValue()); if("java.library.path".equalsIgnoreCase("" + entry.getKey())) { map.put(entry.getKey()+"",entry.getValue()+""); } if("java.class.path".equalsIgnoreCase("" + entry.getKey())) { map.put(entry.getKey()+"",entry.getValue()+""); } if ("sun.boot.class.path".equalsIgnoreCase("" + entry.getKey())) { map.put(entry.getKey()+"",entry.getValue()+""); } if("java.ext.dirs".equalsIgnoreCase("" + entry.getKey())) { map.put(entry.getKey()+"",entry.getValue()+""); } } return map; } void showMap(Map<String,String> map) { for (Map.Entry<String, String> entry : map.entrySet()) { System.out.println("----------------------------------------------------"); System.out.println(entry.getKey() +":"); splitStr(entry.getValue()); System.out.println("----------------------------------------------------"); } } void splitStr(String string) { String[] str = string.split(";"); for (int i = 0; i < str.length; i++) { System.out.println(str[i]); } }}

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