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import java.net.URL;
import java.net.URLDecoder;
public class PathUtil
{
 /**
  * Get the env of windir, such as "C:\WINDOWS".
  * @return the env of windir value.
  */
 public static String getWindir(){
  return System.getenv("windir");
 }
 
 /**
  * Get file separator, such as "/" on unix.
  *
  * @return the separator of file.
  */
 public static String getFileSeparator()
 {
  return System.getProperty("file.separator");
 }
 /**
  * Get line separator, such as "\n" on unix.
  *
  * @return the separator of line.
  */
 public static String getLineSeparator()
 {
  return System.getProperty("line.separator");
 }
 /**
  * Get programPath
  *
  * @return programPath
  */
 public static String getProgramPath()
 {
  Class<PathUtil> cls = PathUtil.class;
  ClassLoader loader = cls.getClassLoader();
  //
  // Get the full name of the class.
  //
  String clsName = cls.getName() + ".class";
  //
  // Get the package that include the class.
  //
  Package pack = cls.getPackage();
  String path = "";
  //
  // Transform package name to path.
  //
  if(pack != null)
  {
   String packName = pack.getName();
   //
   // Get the class's file name.
   //
   clsName = clsName.substring(packName.length() + 1);
   //
   // If package is simple transform package name to path directly,
   // else transform package name to path by package name's
   // constituent.
   //
   path = packName;
   if(path.ind


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