Find files in a folder using Java

Question

What I need to do if Search a folder say C:\example

I then need to go through each file and check to see if it matches a few start characters so if files start

temp****.txt tempONE.txt tempTWO.txt 

So if the file starts with temp and has an extension .txt I would like to then put that file name into a File file = new File("C:/example/temp***.txt); so I can then read in the file, the loop then needs to move onto the next file to check to see if it meets as above.

Answer 1

What you want is File.listFiles(FileNameFilter filter).

That will give you a list of the files in the directory you want that match a certain filter.

The code will look similar to:

// your directory File f = new File("C:\\example"); File[] matchingFiles = f.listFiles(new FilenameFilter() {     public boolean accept(File dir, String name) {         return name.startsWith("temp") && name.endsWith("txt");     } });