The Java Developers Almanac 1.4

e15. Getting an Absolute Filename Path from a Relative Filename Path

    File file = new File("filename.txt");
    file = file.getAbsoluteFile();  // c:\temp\filename.txt
    
    file = new File("dir"+File.separatorChar+"filename.txt");
    file = file.getAbsoluteFile();  // c:\temp\dir\filename.txt
    
    file = new File(".."+File.separatorChar+"filename.txt");
    file = file.getAbsoluteFile();  // c:\temp\..\filename.txt
    
    // Note that filename.txt does not need to exist

Related Examples

e13. Constructing a Filename Path
e14. Converting Between a Filename Path and a URL
e16. Determining If Two Filename Paths Refer to the Same File
e17. Getting the Parents of a Filename Path
e18. Determining If a Filename Path Is a File or a Directory

See also: Directories    Encodings    Files    Parsing    Reading and Writing    Serialization

© 2002 Addison-Wesley.