Re: Inserting In a List

From:
Arved Sandstrom <asandstrom2@eastlink.ca>
Newsgroups:
comp.lang.java.programmer
Date:
Tue, 02 Apr 2013 08:27:33 -0300
Message-ID:
<Fgz6t.74180$mC2.41460@newsfe29.iad>
On 04/02/2013 07:11 AM, subhabangalore@gmail.com wrote:

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.


This comes up every so often. Guava and Apache StringUtils have
join-type methods for concatenating list elements with a delimiter of
your choice.

Fact is, though, if you just want a readable debugging print of your
List, did you not simply try

System.out.println(myList);

AHS

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