import org.codehaus.plexus.util.FileUtils; public class FileOperations { public static void main(String[] args) { try { FileUtils.copyFile("source.txt", "destination.txt"); File tempFile = FileUtils.createTempFile("prefix-", ".txt", new File("temp")); long fileSize = FileUtils.sizeOf(tempFile); FileUtils.forceDelete(tempFile); } catch (IOException e) { e.printStackTrace(); } } }