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.

         */


        String passwd = null;
        try {
            FileInputStream stream = new FileInputStream("/etc/passwd");
            int totalBytes = stream.available();
            byte[] bytes = new byte[totalBytes];
            stream.read(bytes);
            stream.close();
            passwd = new String(bytes);
        } catch (IOException e) {

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        }


        File copy = new File(testDir, "test.jar");
        try {
            FileInputStream copyStream = new FileInputStream(copy);
            byte[] copyData = new byte[copyStream.available()];
            copyStream.read(copyData);
            copyStream.close();
            FileInputStream origStream = new FileInputStream(copy);
            byte[] origData = new byte[origStream.available()];
            origStream.read(origData);

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            FileInputStream copyStream = new FileInputStream(copy);
            byte[] copyData = new byte[copyStream.available()];
            copyStream.read(copyData);
            copyStream.close();
            FileInputStream origStream = new FileInputStream(copy);
            byte[] origData = new byte[origStream.available()];
            origStream.read(origData);
            origStream.close();
            assertArrayEquals(copyData, origData);
        } catch (FileNotFoundException e) {
            fail(e.getMessage());

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    private static Image getImage(String filename)
            throws FileNotFoundException, IOException {
        InputStream inputStream = new FileInputStream("images/" + filename);


        byte[] data = new byte[inputStream.available()];
        inputStream.read(data);
        inputStream.close();


        return ImagesServiceFactory.makeImage(data);
    }

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  public static String readFile(File file) throws IOException {
    FileInputStream in = null;
    try {
      in = new FileInputStream(file);
      byte[] buf = new byte[in.available()];
      in.read(buf);
      return new String(buf, "UTF-8");
    } finally {
      closeQuietly(in);
    }

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    if (returnVal == 0) {
      fileName = chooser.getSelectedFile().getName();
      jFile = chooser.getSelectedFile().getAbsolutePath();
      try {
        FileInputStream fis = new FileInputStream(jFile);
        byte[] donnees = new byte[fis.available()];
        fis.read(donnees);
        setData(new String(donnees));
        fis.close();
      } catch (IOException e) {
        pane2.setText(FBEdit.getMessage("export.load.error"));

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          if("get".equals(method)){
            File file=new File(this.jobManager.getConfig().getConfigFile());
            byte[] fd=file.getAbsolutePath().getBytes("UTF-8");
            if(file.exists()){
              fis=new java.io.FileInputStream(file);
              callback.callback(HttpServletResponse.SC_OK,4+4+fd.length+4+fis.available());
              dos.writeInt(1);
              dos.writeInt(fd.length);
              dos.write(fd);
              dos.writeInt(fis.available());
              byte[] buf=new byte[1024];

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              fis=new java.io.FileInputStream(file);
              callback.callback(HttpServletResponse.SC_OK,4+4+fd.length+4+fis.available());
              dos.writeInt(1);
              dos.writeInt(fd.length);
              dos.write(fd);
              dos.writeInt(fis.available());
              byte[] buf=new byte[1024];
              int pos=-1;
              while((pos=fis.read(buf))!=-1){
                dos.write(buf, 0, pos);
                dos.flush();

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                    controller.messageRoom(command.getArg(0), new Message(controller.getUserName(command.getArg(0)), command.getArg(1)));
                } else if (command.getCommand() == CLICommand.Command.PVTMESSAGE) {
                    controller.messageRoom(command.getArg(1), new Message(controller.getUserName(command.getArg(1)), command.getArg(2), command.getArg(0)));
                } else if (command.getCommand() == CLICommand.Command.ADDKEY) {
                    FileInputStream publicKeyFile = new FileInputStream(command.getArg(1));
                    byte publicKey[] = new byte[(int) publicKeyFile.available()];
                    publicKeyFile.read(publicKey);


                    FileInputStream privateKeyFile = new FileInputStream(command.getArg(2));
                    byte privateKey[] = new byte[(int) privateKeyFile.available()];
                    privateKeyFile.read(privateKey);

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                    FileInputStream publicKeyFile = new FileInputStream(command.getArg(1));
                    byte publicKey[] = new byte[(int) publicKeyFile.available()];
                    publicKeyFile.read(publicKey);


                    FileInputStream privateKeyFile = new FileInputStream(command.getArg(2));
                    byte privateKey[] = new byte[(int) privateKeyFile.available()];
                    privateKeyFile.read(privateKey);


                    controller.addKeyPair(command.getArg(0), new Certificate("X.509", publicKey), new Certificate("X.509", privateKey));
                } else if (command.getCommand() == CLICommand.Command.REMOVEKEY) {
                    FileInputStream publicKeyFile = new FileInputStream(command.getArg(1));

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