Examples of java.io.BufferedInputStream.available()

java.io.BufferedInputStream.available()
Returns an estimate of the number of bytes that can be read (or skipped over) from this input stream without blocking by the next invocation of a method for this input stream. The next invocation might be the same thread or another thread. A single read or skip of this many bytes will not block, but may read or skip fewer bytes.
This method returns the sum of the number of bytes remaining to be read in the buffer (count - pos) and the result of calling the {@link java.io.FilterInputStream#in in}.available(). @return an estimate of the number of bytes that can be read (or skippedover) from this input stream without blocking. @exception IOException if this input stream has been closed byinvoking its {@link #close()} method,or an I/O error occurs.


            try
            {
                fis = new FileInputStream(file);
                BufferedInputStream bis = new BufferedInputStream(fis);
                int bytes = bis.available();
                byte[] raw = new byte[bytes];


                bis.read(raw);
                content = new String(raw, "UTF-8");
                content = content.replaceAll("\r\n","\n");

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    }
    BufferedInputStream bufferedInputStream = new BufferedInputStream(
        f.getContents());
    ByteArrayOutputStream stream = new ByteArrayOutputStream((int) 10000);
    try {
      while (bufferedInputStream.available() >= 0) {
        int k = bufferedInputStream.read();
        if (k == -1) {
          break;
        } else {
          stream.write(k);

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          InputStream contents = new BufferedInputStream(fl
              .getContents(true));


          try {


            while (contents.available() >= 0) {
              int read = contents.read();
              if (read != -1) {
                b.write(read);


              } else {

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        if (open != null) {
          try {
            FileInputStream fs = new FileInputStream(open);
            BufferedInputStream bs = new BufferedInputStream(fs);
            ByteArrayOutputStream s = new ByteArrayOutputStream();
            while (bs.available() >= 0) {
              int k = bs.read();
              if (k == -1) {
                break;
              }
              s.write(k);

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  private byte[] getBytesFromStream(InputStream stream) {
    if (stream == null)
      return null;
    BufferedInputStream bis = new BufferedInputStream(stream);
    try {
      int size = (int) bis.available();
      byte[] b = new byte[size];
      int rb = 0;
      int chunk = 0;


      while (((int) size - rb) > 0) {

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//    if(filename==null || filename.equals(""))
//    {
//      throw new NullPointerException("��Ч���ļ�·��");
//    }
    BufferedInputStream bufferedInputStream=new BufferedInputStream(Util.class.getResourceAsStream("DES.properties"));
    long len = bufferedInputStream.available();
    byte[] bytes = new byte[(int)len];


    int r = bufferedInputStream.read( bytes );
    if (r != len)
      throw new IOException("��ȡ�ļ�����ȷ");

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   * @throws IOException
   * @return byte[]
   */
  public byte[] readFileJar(String filename) throws IOException {
    BufferedInputStream bufferedInputStream=new BufferedInputStream(getClass().getResource(filename).openStream());
    int len=bufferedInputStream.available();
    byte[] bytes=new byte[len];
    int r=bufferedInputStream.read(bytes);
    if(len!=r)
    {
      bytes=null;

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      Process process = Runtime.getRuntime().exec(command);
      
      // check error stream
      BufferedInputStream errorStream = new BufferedInputStream(process.getErrorStream());
      if (errorStream.available() > 0) {
        BufferedReader errorReader = new BufferedReader(new InputStreamReader(errorStream));
        while ((line = errorReader.readLine()) != null) {
          System.out.println(line);
          error = true;
        }

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        // Test that a closed stream throws an IOE for available()
        BufferedInputStream bis = new BufferedInputStream(
                new ByteArrayInputStream(new byte[] { 'h', 'e', 'l', 'l', 'o',
                        ' ', 't', 'i', 'm' }));
        int available = bis.available();
        bis.close();
        assertTrue(available != 0);


        try {
            bis.available();

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        int available = bis.available();
        bis.close();
        assertTrue(available != 0);


        try {
            bis.available();
            fail("Expected test to throw IOE.");
        } catch (IOException ex) {
            // expected
        }
    }

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