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]);
}
}
}
