1. import java.io.File;
  2. import java.util.ArrayList;
  3. import java.util.List;
  5. public class ConfigFilePaginator {
  7. private final String configDir;
  8. private final int pageSize;
  10. public ConfigFilePaginator(String configDir, int pageSize) {
  11. this.configDir = configDir;
  12. this.pageSize = pageSize;
  13. }
  15. public List<String> getFiles(int pageNumber) {
  16. // Calculate the starting and ending indices for the current page
  17. int start = (pageNumber - 1) * pageSize;
  18. int end = start + pageSize;
  20. List<String> files = new ArrayList<>();
  21. File configDirFile = new File(configDir);
  23. if (!configDirFile.exists() || !configDirFile.isDirectory()) {
  24. System.err.println("Error: Config directory does not exist or is not a directory: " + configDir);
  25. return files; // Return empty list on error
  26. }
  28. File[] filesInDir = configDirFile.listFiles();
  30. if (filesInDir == null) {
  31. System.err.println("Error: Could not list files in directory: " + configDir);
  32. return files; //Return empty list on error
  33. }
  35. int fileIndex = 0;
  36. for (File file : filesInDir) {
  37. if (file.isFile() && file.getName().endsWith(".conf")) {
  38. if (fileIndex >= start && fileIndex < end) {
  39. files.add(file.getAbsolutePath());
  40. }
  41. }
  42. fileIndex++;
  43. }
  45. return files;
  46. }
  48. public static void main(String[] args) {
  49. // Example Usage
  50. String configDirectory = "/path/to/your/config/files"; // Replace with your config directory
  51. int pageSize = 5;
  53. ConfigFilePaginator paginator = new ConfigFilePaginator(configDirectory, pageSize);
  55. for (int page = 1; ; page++) {
  56. List<String> files = paginator.getFiles(page);
  57. System.out.println("Page " + page + ":");
  58. if (files.isEmpty()) {
  59. System.out.println("No files found.");
  60. break;
  61. }
  62. for (String file : files) {
  63. System.out.println(file);
  64. }
  65. System.out.println();
  66. }
  67. }
  68. }

Add your comment