how to convert a set into a string

HI

from a getKeys(false) I get a set, which contains the Keys of a Yaml-file. how can i get a String, which contains all the keys of the set? I need something like:

Key1, Key2, Key3, Key4, ...

I hope you can help me.

 

Code:

            StringBuilder sb = new StringBuilder();
 
            for(java.util.Map.Entry<String,Object> entry : mySet.entryset())
            {
                //add a "," before every entry, except for the first one
                if(sb.toString().length() > 0)
                    sb.append(", ");
                //append the string
                sb.append(entry.getKey());
            }
         
            //work with string
            String myConatinatedString = sb.toString();

You may have to adjust the Entry's typeparameter for your needs.

 

Thank you, I hope this works. Could you please explain this a bit further? I don't want wo use code, that I don't understand.

 

just use
Set<String> keys = config.getKeys(false);
String newString = keys.toString().subString(1, keys.size()-1 );