[7] Getting an Absolute Filename Path from a Relative Filename Path

[7] 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

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