create a folder for multiple numbers in java

1public static void main(String[] args) {
2    String dirPath = "D:\\temp\\";
3    File dir = new File(dirPath);
4
5    // Get Directory Listing
6    File[] fileList = dir.listFiles();
7
8    // Process each file
9    for(int i=0; i < fileList.length; i++)
10    {
11        if(fileList[i].isFile()) {
12            String fileName = fileList[i].getName();
13            // Split at the file extension and the classgroup
14            String[] fileParts = fileName.split("[_\\.]");
15            System.out.println("One: " + fileParts[0] + ", Two: " + fileParts[1]);
16
17            // Check directory exists
18            File newDir = new File(dirPath + fileParts[0] + "\\" + fileParts[1]);
19            if(!newDir.exists()) {
20                // Create directory
21                if(newDir.mkdirs()) {
22                    System.out.println("Directory Created");
23                }
24            } 
25
26            // Move file into directory
27            if(fileList[i].renameTo(new File(dirPath + fileParts[0] + "\\" + fileParts[1] + "\\" + fileName))) {
28                System.out.println("File Moved");
29            }
30
31        }
32    }
33}
34

1fullPathFile.getParentFile().mkdirs();
2