Question

im creating a program that will compile java files, at the moment i have the program compiling numerous files at a time in one particular folder. but what i want it to do is to compile all the files in a folder structure given a folder to start (eg. if given the following address C:/files_to_be_compiled, can you search all the folders within this folder to get a list of all the .class files). I have this code that is getting all the .class files from a single folder but i need to expand this to get all the .class files from all the rest of the folders in that folder given

 String files;
        File folder = new File("C:/files_to_compile");
        File[] listOfFiles = folder.listFiles();
        {

            for (int i = 0; i < listOfFiles.length; i++) {

                if (listOfFiles[i].isFile()) {
                    files = listOfFiles[i].getName();
                    if (files.endsWith(".class") || files.endsWith(".CLASS")) {
                        System.out.println(files);
                    }
                }
            }
        }

how would i extend the code above get all the .class files from within all the folders in a given folder?

Answer 1

This answer may be of use to you.

Example code borrowed from linked answer:

public void listFilesForFolder(final File folder) {
    for (final File fileEntry : folder.listFiles()) {
        if (fileEntry.isDirectory()) {
            listFilesForFolder(fileEntry);
        } else {
            System.out.println(fileEntry.getName());
        }
    }
}

final File folder = new File("/home/you/Desktop");
listFilesForFolder(folder);