Examples of java.io.File

java.io.File
File is a class which represents a file name or directory. The file may be absolute relative to the root directory of the file system or relative to the current directory in which the program is running.
This class provides methods for querying/changing information about the file and also directory listing capabilities if the File represents a directory.
When manipulating file paths, the static fields of this class may be used to determine the platform specific separators. @see java.io.Serializable @see java.lang.Comparable

      // grab a zip file entry
      ZipEntry entry = (ZipEntry) zipFileEntries.nextElement();


      String currentEntry = entry.getName();


      File destFile = new File(unzipDestinationDirectory, currentEntry);


      // grab file's parent directory structure
      File destinationParent = destFile.getParentFile();


      // create the parent directory structure if needed
      destinationParent.mkdirs();


      // extract file if not a directory
      if (!entry.isDirectory()) {
        ObjectConverterUtil.write(zipFile.getInputStream(entry),
            destFile);

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    }
    zipFile.close();
  }


  static File createTempDirectory() throws IOException {
    File temp = File.createTempFile("temp", Long.toString(System.nanoTime()));


    temp.delete();


    if (!(temp.mkdir())) {
      throw new IOException("Could not create temp directory: "
          + temp.getAbsolutePath());
    }


    return temp;
  }

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    return deploymentBaseName;
  }


  public VirtualFile applyTemplate(DeploymentTemplateInfo sourceInfo) throws Exception {
    File dsXml = File.createTempFile(getClass().getSimpleName(),TranslatorParserDeployer.TRANSLATOR_SUFFIX);
    writeTemplate(dsXml, sourceInfo);
    return VFS.getRoot(dsXml.toURI());
  }

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  public void setUseDisk(boolean flag) {
    this.useDisk = flag;
  }


  public void setDiskDirectory(String dir) {
    this.bufferDir = new File(dir, "buffer"); //$NON-NLS-1$
  }

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   * @param url
   * @return cacheFile
   */
  protected File getCacheFile(URL url) {
    // does the file exists on the filesystem ?
    File cacheFile = new File(url2Filename(url));
    if (! (cacheFile.exists() && (cacheFile.isFile()))) {
    return null;
    }
    return cacheFile;
  }

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   * simple heuristic to determine the possible MIME type.
   */
  public void removeDocument(URL u) {
  String ext = getExtension(u);
  if (ext == null) return;
  File cacheFile = getCacheFile(u);
  if (cacheFile == null) return ;
  
  cacheFile.delete();
  }

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   * to be a dynamic document.
   */
  public HttpDoc retrieveFromCache(URL u) {
  String ext = getExtension(u);
  if (ext == null) return null;
  File cacheFile = getCacheFile(u);
  if (cacheFile == null) return null;
    
    // create a buffer;
    long size = cacheFile.length();
    if (size > Integer.MAX_VALUE) {
      log.info("File too large");
      return null;
    }

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      if (filename.charAt(i) == File.separatorChar) {
  pos = i;
  i = -1;
      }
    }
    File dir = new File(filename.substring(0, pos));
    dir.mkdirs();
  }

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    // Allow a properties file in the WekaPackageManager.PROPERTIES_DIR to override
    Properties userProps = new Properties(defaultProps);
    if (!WekaPackageManager.PROPERTIES_DIR.exists()) {
      WekaPackageManager.PROPERTIES_DIR.mkdir();
    }
    File propFile = new File(WekaPackageManager.PROPERTIES_DIR.toString()
                             + File.separator
                             + resourceName);


    if (propFile.exists()) {
      try {
        userProps.load(new FileInputStream(propFile));
      } catch (Exception ex) {
        throw new Exception("Problem reading user properties: " + propFile);
      }
    }


    // Allow a properties file in the current directory to override
    Properties localProps = new Properties(userProps);
    propFile = new File(resourceName);
    if (propFile.exists()) {
      try {
        localProps.load(new FileInputStream(propFile));
      } catch (Exception ex) {
        throw new Exception("Problem reading local properties: " + propFile);
      }

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   * @param absolute the File to convert to relative path
   * @return a File with a path that is relative to the user's directory
   * @exception Exception if the path cannot be constructed
   */
  public static File convertToRelativePath(File absolute) throws Exception {
    File        result;
    String      fileStr;
    
    result = null;
    
    // if we're running windows, it could be Cygwin
    if (File.separator.equals("\\")) {
      // Cygwin doesn't like upper case drives -> try lower case drive
      try {
        fileStr = absolute.getPath();
        fileStr =   fileStr.substring(0, 1).toLowerCase() 
                  + fileStr.substring(1);
        result = createRelativePath(new File(fileStr));
      }
      catch (Exception e) {
        // no luck with Cygwin workaround, convert it like it is
        result = createRelativePath(absolute);
      }

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