I tried a lot, but was unable to find a solution.

```
|
|--src/main/resouces
       |
       |-updatePropertiesFile.java
       |-xyz_en_US.properties
       |-xyz_en_AF.properties
       |-xyz_en_AE.properties

```

This is my project structure.

I have a updatePropertiesFile class, to update a key for all the properties file. I have around 200 properties file.

So what I need is that, I need to write a method to update a particular key in all these properties file. Manual change is not that practically. I need to write an application which does this funtionality.

I tried using resoucebundle mechanism. But using resource bundle, we can get only one property file. I tried `ResourceBundle.getBundle(String,Locale)` and `ResourceBundle.getBundle(String)` methods. 

I need an iteration through these properties file and updation for the key.

My initial issue is fixed.

I did this as :

```
File[] files = new File("src/main/resources").listFiles();
    for (File file : files) {
    if (file.getName().endsWith("properties"))  {
     //my logic
    }

```

But when I did this, my comments in properties file got removed and the order got changed. I wnat to keep the order of the key and the comments in properties file too.

To keep the order I tried using:

```
public static class LinkedProperties extends Properties {
        private final HashSet<Object> keys = new LinkedHashSet<Object>();

        public LinkedProperties() {
        }

        public Iterable<Object> orderedKeys() {
            return Collections.list(keys());
        }

        public Enumeration<Object> keys() {
            return Collections.<Object>enumeration(keys);
        }

        public Object put(Object key, Object value) {
            keys.add(key);
            return super.put(key, value);
        }
    }

```

But this caused some changes in key-value pair in properties file. Some special character got added up.

Please help me out to maintain the comments and order