Java 1.6 – determine symbolic links

by

The technique used in Apache Commons uses the canonical path to the parent directory, not the file itself. I don’t think that you can guarantee that a mismatch is due to a symbolic link, but it’s a good indication that the file needs special treatment.

This is Apache code (subject to their license), modified for compactness.

public static boolean isSymlink(File file) throws IOException {
  if (file == null)
    throw new NullPointerException("File must not be null");
  File canon;
  if (file.getParent() == null) {
    canon = file;
  } else {
    File canonDir = file.getParentFile().getCanonicalFile();
    canon = new File(canonDir, file.getName());
  }
  return !canon.getCanonicalFile().equals(canon.getAbsoluteFile());
}

More Related Contents:

  1. Is it possible to read the value of a annotation in java?
  2. How to set specific Java version to Maven?
  3. Using File.listFiles with FileNameExtensionFilter
  4. How to use TLS 1.2 in Java 6
  5. Getting the name of a method parameter
  6. Generic support for ISO 8601 format in Java 6
  7. Simple Java HTTPS server
  8. Which JDK version (Language Level) is required for Android Studio?
  9. How to tell why a file deletion fails in Java?
  10. WatchService for Java 6 [closed]
  11. intern() behaving differently in Java 6 and Java 7
  12. UnsupportedClassVersionError: JVMCFRE003 bad major version in WebSphere AS 7
  13. Varargs in method overloading in Java
  14. Eclipse crashes at startup; Exit code=13
  15. Java nested generic type mismatch
  16. Difference between ArrayList and Array of object [duplicate]
  17. java code problem
  18. How to parse dates in multiple formats using SimpleDateFormat
  19. How to compare two double values in Java?
  20. How to deploy a JavaFX 11 Desktop application with a JRE
  21. Swing Worker : function get()
  22. Android – Activity Constructor vs onCreate
  23. Why does this Java regex cause “illegal escape character” errors?
  24. “The Struts dispatcher cannot be found” error while deploying application on WebLogic 12.1.3
  25. How to resume Android Activity programmatically from background
  26. How to use invokeAll() to let all thread pool do their task?
  27. using a variable in constructor in a method outside of constructor
  28. How to convert a date in this format (Tue Jul 13 00:00:00 CEST 2010) to a Java Date (The string comes from an alfresco property)
  29. How to Reuse HttpUrlConnection? [duplicate]
  30. Converting number representing a date in Excel to a Java Date object

Leave a Comment