Java: Deleting files that start with a specific string.

1. get the list of all files from the dir
2. loop through each file and check the file name starts with the string or 'l' + string
3. true --> delete it
4. false --> continue

I was hoping I could use something like FilenameFilterEx, however through trial and error I found out that the filter only works for file extensions.

I tested this and it seems to do what you're asking:

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import java.io.*;

public class dir {
      static private String[] files;
      static File dir=new File("./");
      
      public static void main(String[] args) {
            files=dir.list();
            for(int i=0;i<files.length;i++){
                  System.out.println(files[i]);
                  if(files[i].toString().matches("^l300.*|^300.*")){
                        File temp=new File(files[i]);
                        temp.delete();
                        System.out.println("Deleted: "+files[i]);
                  }
            }
      }
}
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That's for the current directory (./), and I guess the .toString() is unnecessary...

I didn't really think about why you would want to do this, but it would be much more efficient to weite a shell (or batch) script to do this at the os level.