1. import java.io.*;
  2. import java.time.LocalDateTime;
  3. import java.time.format.DateTimeFormatter;
  4. import java.util.ArrayList;
  5. import java.util.List;
  7. public class FileBackup {
  9. private static final String SOURCE_DIR = "/path/to/source/directory"; // Replace with the source directory
  10. private static final String BACKUP_DIR = "/path/to/backup/directory"; // Replace with the backup directory
  12. public static void main(String[] args) {
  13. // Ensure backup directory exists
  14. File backupDir = new File(BACKUP_DIR);
  15. if (!backupDir.exists()) {
  16. backupDir.mkdirs();
  17. }
  19. backupFiles();
  20. }
  22. public static void backupFiles() {
  23. File sourceDir = new File(SOURCE_DIR);
  24. File[] files = sourceDir.listFiles();
  26. if (files != null) {
  27. for (File file : files) {
  28. if (file.isFile()) { // Only backup files
  29. backupFile(file);
  30. } else if (file.isDirectory()) { //Recursively backup directories
  31. backupDirectory(file);
  32. }
  33. }
  34. }
  35. }
  37. private static void backupFile(File file) {
  38. try {
  39. String fileName = file.getName();
  40. String backupFileName = LocalDateTime.now().format(DateTimeFormatter.ISO_DATE_TIME) + "_" + fileName;
  41. File backupFile = new File(BACKUP_DIR, backupFileName);
  43. // Copy the file
  44. try (InputStream inputStream = new FileInputStream(file);
  45. OutputStream outputStream = new FileOutputStream(backupFile)) {
  47. byte[] buffer = new byte[1024];
  48. int len;
  49. while ((len = inputStream.read(buffer)) > 0) {
  50. outputStream.write(buffer, 0, len);
  51. }
  52. } catch (IOException e) {
  53. System.err.println("Error backing up file " + fileName + ": " + e.getMessage());
  54. }
  55. } catch (Exception e) {
  56. System.err.println("Error processing file " + file.getName() + ": " + e.getMessage());
  57. }
  58. }
  60. private static void backupDirectory(File dir) {
  61. try {
  62. String dirName = dir.getName();
  63. String backupDirName = LocalDateTime.now().format(DateTimeFormatter.ISO_DATE_TIME) + "_" + dirName;
  64. File backupDir = new File(BACKUP_DIR, backupDirName);
  66. if (!backupDir.exists()) {
  67. backupDir.mkdirs();
  68. }
  70. File[] files = dir.listFiles();
  71. if (files != null) {
  72. for (File file : files) {
  73. if (file.isFile()) {
  74. File backupFile = new File(backupDir, file.getName());
  76. try (InputStream inputStream = new FileInputStream(file);
  77. OutputStream outputStream = new FileOutputStream(backupFile)) {
  79. byte[] buffer = new byte[1024];
  80. int len;
  81. while ((len = inputStream.read(buffer)) > 0) {
  82. outputStream.write(buffer, 0, len);
  83. }
  84. } catch (IOException e) {
  85. System.err.println("Error backing up file " + file.getName() + ": " + e.getMessage());
  86. }
  87. } else if (file.isDirectory()) {
  88. backupDirectory(file); // Recursive call for subdirectories
  89. }
  90. }
  91. }
  92. } catch (Exception e) {
  93. System.err.println("Error backing up directory " + dir.getName() + ": " + e.getMessage());
  94. }
  95. }
  96. }

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