Inserting In a List

Dear Group,

I am taking out the files in my desktop folder, as,

File folder = new File("C:\\Users\\subhabrata\\Desktop");

Next, I am trying to take them out one by one as using for loop and name
of each file is converted to String,

for( File name :folder.listFiles()){
String s1=name.toString();
System.out.println("####"+s1);
System.out.print( name );
}

Till this there is no issue, now I am trying to insert name of all the files in an array, generally it can be done, as,

ArrayList<String> myList = new ArrayList<String>();
        myList.add(s1);

But the problem I am facing is, if I put it as,

for( File name :folder.listFiles()){
String s1=name.toString();
System.out.println("####"+s1);
System.out.print( name );
ArrayList<String> myList = new ArrayList<String>();
        myList.add(s1);
}

I am getting name of files individually but I want to see them as the whole bunch like,

myList=["string1","string2","string3",...."StringN"]

My aim is to check the names then in another for loop and if match is not found with some defined name update the list.

I am slightly new in Java so if anyone can kindly suggest how I should address it.

Regards,
Subhabrata.