                        课程
                    
                        /后端开发
                        
                            /Java
                        
                        /模式的秘密——工厂模式

关于工厂模式的配置文件代码的问题

//读取配置文件,单例模式
public class PropertiesReader {
private static Map<String,String> map = null;
private PropertiesReader(){}

public static Map<String,String> getProperties(){
if(map == null){
map = new HashMap<>();
Properties properties = new Properties();
// InputStream in = getClass().getResourceAsStream("type.properties");
InputStream in = PropertiesReader.class.getResourceAsStream("type.properties");
try {
properties.load(in);
Enumeration en = properties.propertyNames();
while (en.hasMoreElements()){
String key = (String) en.nextElement();
String value = properties.getProperty(key);
map.put(key,value);
}
} catch (IOException e) {
e.printStackTrace();
}
}
return map;
}
}