JAVA開発メモ
Commons-IO のバックアップの現在との差分(No.3)
 

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  #freeze
  *[[Jakarta Commons IO:http://jakarta.apache.org/commons/io/]]

  #contents
  
  #amazonkey2(jakarta)
  


  

  |InputStream|OutputStream|
  |Reader|Writer|
  |InputStream|Writer|
  |Reader|OutputStream|
  |String|OutputStream|
  |String|Writer|
  |byte[]|Writer|
  |byte[]|OutputStream|
  
   try {
       InputStream in = new FileInputStream("C:\\tmp\\org.txt");
       OutputStream out = new FileOutputStream("C:\\tmp\\copy.txt");

       CopyUtils.copy(in, out);
   } catch (Exception e) {
       e.printStackTrace();
   }
  


   InputStream in = null;
   try {
       in = new URL("http://www.moriwaki.net/wiki/").openStream();

       System.out.println(IOUtils.toString(in));
   } catch (Exception e) {
       e.printStackTrace();
   } finally {

       IOUtils.closeQuietly(in);
   }
  


  

   File dir = new File("C:\\tmp\\work");
   try {
       FileUtils.cleanDirectory(dir);
   } catch (IOException e) {
       e.printStackTrace();
   }
  

   File file1 = new File("C:\\tmp\\test.txt");
   File file2 = new File("C:\\tmp\\copy.txt");
       try {
   FileUtils.copyFile(file1, file2);
   } catch (IOException e) {
       e.printStackTrace();
   }
  

   File dir = new File("C:\\tmp");
   String[] extensions = {"txt", "html"};

   Collection files = FileUtils.listFiles(dir, extensions, recursive);
   System.out.println(files);
  

   File dir = new File("C:\\tmp");
   long size = FileUtils.sizeOfDirectory(dir);
   System.out.println(size + " bytes");
   System.out.println(FileUtils.byteCountToDisplaySize(size));

   693928711 bytes
   661 MB
  

  -void ''touch''(File)

  -File[] ''convertFileCollectionToFileArray''(Collection)

  -Collection ''listFiles''(File, IOFileFilter, IOFileFilter)

  -boolean ''contentEquals''(File, File)

  -File ''toFile''(URL)

  -URL[] ''toURLs''(File[])

  -String ''readFileToString''(File, String)

  -void ''writeStringToFile''(File, String, String)

  -void ''forceDelete''(File)

  -boolean ''isFileNewer''(File, File)

  


  
   File dir = new File("C:\\tmp");

   IOFileFilter fileFilter1 = FileFilterUtils.prefixFileFilter("test");

   IOFileFilter fileFilter2 = FileFilterUtils.suffixFileFilter("html");

   IOFileFilter fileFilter =
       FileFilterUtils.andFileFilter(fileFilter1, fileFilter2);
  

   IOFileFilter dirFilter = FileFilterUtils.trueFileFilter();

   dirFilter = FileFilterUtils.makeCVSAware(dirFilter);
  

   files = FileUtils.listFiles(dir, fileFilter, dirFilter);
   System.out.println(files);
  

   [C:\tmp\test.html, C:\tmp\test2.html]
  
  

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Modified by MT22(Moriwaki Takashi)

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