[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

I want to find all files of a certain extension

Posted on 2006-06-20
6
Medium Priority
?
205 Views
Last Modified: 2010-03-31
I've got my zip utility working.  But I'm hardcoding the file names, like:

String[] files = new String[2];

files[0] = "C:\\Temp\\file1.txt";
files[1] = "C:\\Temp\\file2.txt";

I want to loop through a given dir, like C:\Temp, and pick up all files with a certain extension and put them in an array.

All the examples on the web aren't really what I want.

I'd like to keep this to a simple method if I can.
0
Comment
Question by:arctanx
  • 2
  • 2
  • 2
6 Comments
 
LVL 86

Assisted Solution

by:CEHJ
CEHJ earned 200 total points
ID: 16946261
0
 
LVL 14

Expert Comment

by:StillUnAware
ID: 16946293
String[] all = new File("dir").list();
ArrayList<String> al = new ArrayList<String>();
for(String name : al)
    if(name.toUpperCase().endsWith(".TXT"))
        al.add(name);
String[] files = al.toArray(new String[0]);
0
 
LVL 2

Author Comment

by:arctanx
ID: 16946600
So this is what I've got so far:

        String dir = "C:\\Temp";
        File path = new File(dir);
        String[] list = path.list();
        for(int i=0;i<list.length;i++)
        {
            f.listFiles( WHAT GOES HERE );
        }

How exactly do I use FileFilter?

StillUnAware I can't use that 1.5 code we're using 1.4.  Thanks though.
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 14

Accepted Solution

by:
StillUnAware earned 200 total points
ID: 16946642
Actually, You should use the technique, mentioned by CEHJ:

String[] files = new File("C:\\Temp").list(new FilenameFilter() {
  public boolean accept(File dir, String name) {
    if(name.toUpperCase().endsWith(".TXT"))
      return true;
    return false;
  }
});
0
 
LVL 2

Author Comment

by:arctanx
ID: 16946691
That's gravy!!
I'd like to split points, I going to use your code, but CEHJ had the idea.
I hope 50/50 is cool.
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 16946716
:-)

return name.toUpperCase().endsWith(".TXT");

will do in fact
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

An old method to applying the Singleton pattern in your Java code is to check if a static instance, defined in the same class that needs to be instantiated once and only once, is null and then create a new instance; otherwise, the pre-existing insta…
This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…
This tutorial explains how to use the VisualVM tool for the Java platform application. This video goes into detail on the Threads, Sampler, and Profiler tabs.
Suggested Courses
Course of the Month20 days, 8 hours left to enroll

868 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question