Examples of java.io.FileInputStream.available()

java.io.FileInputStream.available()
Returns an estimate of the number of remaining 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.
In some cases, a non-blocking read (or skip) may appear to be blocked when it is merely slow, for example when reading large files over slow networks. @return an estimate of the number of remaining bytes that can be read(or skipped over) from this input stream without blocking. @exception IOException if this file input stream has been closed by calling{@code close} or an I/O error occurs.

     */
    public String readHTMLFile(String fileLoc) {
        String errorPage = null;
        try {
            FileInputStream fis = new FileInputStream(fileLoc);
            int x = fis.available();
            byte b[] = new byte[x];
            fis.read(b);
            errorPage = new String(b);
            //close buffers
            fis.close();

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                return;
            }
            FileInputStream is = new FileInputStream(f);
            byte[] b = new byte[1024];
            int q = 0;
            while((q = is.available()) > 0) {
                if(q > 1024) q = 1024;
                q = is.read(b, 0, q);
                jos.write(b, 0, q);
            }
            is.close();

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    try
    {
      String configFile = getClass().getResource("listenerFile.xml").getFile();
      FileInputStream input = new FileInputStream(configFile);
      byte[] data = new byte[input.available()];
      
      input.read(data);


      ParamRepositoryFactory.getInstance().add("test", new String(data));

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        String copyofhardtokensn = data.getProperty("COPYOFHARDTOKENSN");
        String hardtokensn = data.getProperty("HARDTOKENSN");
        int validity = Integer.parseInt(data.getProperty("VALIDITY"));    
        String hardtokensnprefix = data.getProperty("HARDTOKENSNPREFIX");
        FileInputStream fis = new FileInputStream(templatefilename);
        byte[] byteData = new byte[fis.available()];
          fis.read(byteData);
          String sVGData = new String(byteData,"UTF8");
          PrinterManager.print(printername, templatefilename, sVGData, 1, validity, userdata, pins, puks, hardtokensnprefix, hardtokensn, copyofhardtokensn);  
      } catch(Exception e) {
        getLogger().error(e.getMessage());

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  private String getRequestData(String regestDataPath) {
    String retval=null;
    try {
      FileInputStream fis = new FileInputStream(regestDataPath);
      byte[] contents = new byte[fis.available()];
      fis.read(contents);      
      fis.close();
      retval = new String(contents);
    } catch (FileNotFoundException e) {
      getPrintStream().println("Error : request data file couln't be found.");

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  private String getPKCS10(String pkcs10Path) {
    String retval=null;
    try {
      FileInputStream fis = new FileInputStream(pkcs10Path);
      byte[] contents = new byte[fis.available()];
      fis.read(contents);      
      fis.close();
      retval = new String(contents);
    } catch (FileNotFoundException e) {
      getPrintStream().println("Error : PKCS10 file couln't be found.");

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  private String getPKCS10(String pkcs10Path) {
    String retval=null;
    try {
      FileInputStream fis = new FileInputStream(pkcs10Path);
      byte[] contents = new byte[fis.available()];
      fis.read(contents);      
      fis.close();
      retval = new String(contents);
    } catch (FileNotFoundException e) {
      getPrintStream().println("Error : PKCS10 file couln't be found.");

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          + " filename=\"" + exsistingFileName + "\"" + lineEnd);
      dos.writeBytes(lineEnd);


      // create a buffer of maximum size


      bytesAvailable = fileInputStream.available();
      bufferSize = Math.min(bytesAvailable, maxBufferSize);
      buffer = new byte[bufferSize];


      // read file and write it into form...

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      bytesRead = fileInputStream.read(buffer, 0, bufferSize);


      while (bytesRead > 0) {
        dos.write(buffer, 0, bufferSize);
        bytesAvailable = fileInputStream.available();
        bufferSize = Math.min(bytesAvailable, maxBufferSize);
        bytesRead = fileInputStream.read(buffer, 0, bufferSize);
      }


      // send multipart form data necesssary after file data...

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          + " filename=\"" + exsistingFileName + "\"" + lineEnd);
      dos.writeBytes(lineEnd);


      // create a buffer of maximum size


      bytesAvailable = fileInputStream.available();
      bufferSize = Math.min(bytesAvailable, maxBufferSize);
      buffer = new byte[bufferSize];


      // read file and write it into form...

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