Java: Copy a directory recursively to a new location

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;

public class DirectoryCopy {
      public static void main(String[] args) {
            try {
                  DirectoryCopy runner = new DirectoryCopy();
                  runner.copyFile("R:\\FileDepot", "C:\\MyFiles\\ProjectDesign");
            }catch(IOException e) {
                  e.printStackTrace();
            }
      }

      public void copyFile(String sourceDir, String desDir) throws IOException {
        File file = new File(sourceDir);
        File file2 = new File(desDir);
        if (file.isDirectory()) {
            if (!file2.exists()) {
                file2.mkdir();
            }
            String[] allFiles = file.list();
            for (String f : allFiles) {
                copyFile(sourceDir+"\\"+f, desDir+"\\"+f);
            }
        } else {
            if (!file2.exists()) {
                file2.createNewFile();
            }
            Files.copy(file.toPath(), file2.toPath(), StandardCopyOption.REPLACE_EXISTING);
        }

    }
}

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