Example usage for java.io FileInputStream read

Introduction

In this page you can find the example usage for java.io FileInputStream read.

Prototype

public int read() throws IOException 

Source Link

Document

Reads a byte of data from this input stream.

Usage

From source file:Main.java

/**
 * Read the original picture to an array
 * /* w  w  w  .  j ava 2 s  . c  o m*/
 * @param initialFile
 * @param size
 * @return an array with the address and values
 */
public static int[] readBaseFile(String initialFile, int size) {
    int[] imageTxt = new int[size];
    FileInputStream fin;
    try {
        // Open an input stream
        fin = new FileInputStream(initialFile);
        int k = 0;
        while (fin.available() != 0) {
            imageTxt[k++] = fin.read();
        }
        fin.close();
    }
    // Catches any error conditions
    catch (IOException e) {
        System.err.println("Unable to read image");
        System.exit(1);
    }
    return imageTxt;
}

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From source file:Main.java

public static String file2String(File file) {
    FileInputStream fis = null;
    ByteArrayOutputStream baos = null;
    try {/*from   w ww  .  j ava 2s.  c o  m*/
        fis = new FileInputStream(file);
        baos = new ByteArrayOutputStream();
        int i;
        while ((i = fis.read()) != -1) {
            baos.write(i);
        }
        String str = baos.toString();
        return str;
    } catch (FileNotFoundException e) {
        e.printStackTrace();
        return null;
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    } finally {
        try {
            if (fis != null)
                fis.close();
            if (baos != null)
                baos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

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From source file:eu.cloud4soa.c4sgitservice.utils.Util.java

public static String readfile(String filename) throws Exception {
    String ret = "";
    File file = new File(filename);
    int ch;//ww  w.j  a  v a  2s  . c o m
    StringBuffer strContent = new StringBuffer("");
    FileInputStream fin = null;
    try {
        fin = new FileInputStream(file);
        while ((ch = fin.read()) != -1)
            strContent.append((char) ch);
        fin.close();
    } catch (Exception e) {
        throw e;
    }
    ret = strContent.toString();
    return ret;
}

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From source file:com.ginstr.android.service.opencellid.library.data.ApiKeyHandler.java

/**
 * Reads a random generated API key from a file stored on external storage.
 * File is located on external storage so it can be accessed from other
 * libraries.//from  ww w  .  j  a v  a2 s  . c  om
 * 
 * @return null if no key otherwise a key read from file
 */
private static String getKeyFromFile(boolean testMode) {
    String keyFilePath = testMode ? API_KEY_FILE_TEST_DEFAULT : API_KEY_FILE_DEFAULT;

    // check if the key file exists
    File keyFile = new File(keyFilePath);
    if (keyFile.exists()) {
        try {
            FileInputStream fis = new FileInputStream(keyFile);
            int ch = -1;
            StringBuffer sb = new StringBuffer();
            while ((ch = fis.read()) >= 0) {
                sb.append((char) ch);
            }
            fis.close();

            // read the key from file
            return sb.toString();
        } catch (Exception e) {
            Log.e(ApiKeyHandler.class.getSimpleName(), "Error reading key from file", e);
        }
    }

    return null;
}

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From source file:gov.nist.appvet.tool.synchtest.util.ReportUtil.java

/**
 * This method returns report information to the AppVet ToolAdapter as ASCII
 * text and cannot attach a file to the response.
 *///from   ww  w.  j  a  va2s .  c  om
public static boolean sendPDFInHttpResponse(HttpServletResponse response, String reportText,
        ToolStatus reportStatus) {
    try {
        File reportFile = new File(reportFilePath);
        String mimeType = new MimetypesFileTypeMap().getContentType(reportFile);
        log.debug("Sending mimetype: " + mimeType);
        response.setContentType(mimeType);
        response.setHeader("Content-Disposition", "attachment;filename=" + reportFile.getName());
        response.setStatus(HttpServletResponse.SC_OK); // HTTP 200
        response.setHeader("apprisk", reportStatus.name());

        FileInputStream inputStream = new FileInputStream(reportFile); //read the file

        try {
            int c;
            while ((c = inputStream.read()) != -1) {
                response.getWriter().write(c);
            }
        } finally {
            if (inputStream != null)
                inputStream.close();
            response.getWriter().close();
        }

        //         PrintWriter out = response.getWriter();
        //         out.println(reportText);
        //         out.flush();
        //         out.close();
        log.info("Returned report");
        return true;
    } catch (IOException e) {
        log.error("Report not sent: " + e.toString());
        return false;
    }
}

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From source file:com.pactera.edg.am.metamanager.extractor.util.AntZip.java

private static void zip(ZipOutputStream out, File f, String base) {
    try {//from  w  w  w .  j av a 2 s .com
        if (f.isDirectory()) {
            File[] fl = f.listFiles();
            if (base != null && !"".equals(base))
                out.putNextEntry(new ZipEntry(base + "/"));
            base = base.length() == 0 ? "" : base + "/";
            for (int i = 0; i < fl.length; i++) {
                zip(out, fl[i], base + fl[i].getName());
            }
        } else {
            out.putNextEntry(new ZipEntry(base));
            FileInputStream in = new FileInputStream(f);
            int b = -1;
            int buff = 0;
            while ((b = in.read()) != -1) {
                out.write(b);
                buff++;
                if (buff > 10240) {
                    buff = 0;
                    out.flush();
                }
            }
            out.flush();
            if (in != null) {
                in.close();
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

}

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From source file:de.mpg.escidoc.services.reporting.ReportFHI.java

protected static String readFromFile(String fileName) throws IOException {
    int ch;/*  w  w  w  . j a  va  2  s  . c om*/
    StringBuffer buff = new StringBuffer();
    FileInputStream fis = new FileInputStream(fileName);
    while ((ch = fis.read()) != -1)
        buff.append((char) ch);
    fis.close();
    return buff.toString();
}

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From source file:com.clutch.ClutchAB.java

private static JSONObject getLatestMeta() {
    // TODO: Cache
    try {//ww w . j a va 2s. c  o m
        FileInputStream fis = context.openFileInput("__clutchab.json");
        StringBuffer strContent = new StringBuffer("");
        int ch;
        while ((ch = fis.read()) != -1) {
            strContent.append((char) ch);
        }
        fis.close();
        return new JSONObject(new JSONTokener(strContent.toString()));
    } catch (FileNotFoundException e) {
        return new JSONObject();
    } catch (JSONException e) {
        return new JSONObject();
    } catch (IOException e) {
        return new JSONObject();
    }
}

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From source file:com.cherong.mock.common.base.util.EncryptionUtil.java

/**
 *   ??0-F?4838??/* w w w. java2s.  c  o  m*/
 * AD67EA2F3BE6E5ADD368DFE03120B5DF92A8FD8FEC2F0746  AD67EA2F3BE6E5AD
 * DES? D368DFE03120B5DF DES? 92A8FD8FEC2F0746 DES? 
 * ???".license"??
 * 
 * @param file
 * @param key
 */
public static void encrypt(File file, String key) {
    try {
        if (key.length() == 48) {
            byte[] bytK1 = string2Byte(key.substring(0, 16));
            byte[] bytK2 = string2Byte(key.substring(16, 32));
            byte[] bytK3 = string2Byte(key.substring(32, 48));

            FileInputStream fis = new FileInputStream(file);
            byte[] bytIn = new byte[(int) file.length()];
            for (int i = 0; i < file.length(); i++) {
                bytIn[i] = (byte) fis.read();
            }

            // 
            byte[] bytOut = encryptByDES(encryptByDES(encryptByDES(bytIn, bytK1), bytK2), bytK3);
            String fileOut = file.getPath() + ".license";
            FileOutputStream fos = new FileOutputStream(fileOut);
            for (int i = 0; i < bytOut.length; i++) {
                fos.write((int) bytOut[i]);
            }
            fos.close();
            fis.close();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:com.cherong.mock.common.base.util.EncryptionUtil.java

/**
 *   ??0-F?4838??/*from  w  w w.ja v  a2 s  .com*/
 * AD67EA2F3BE6E5ADD368DFE03120B5DF92A8FD8FEC2F0746  AD67EA2F3BE6E5AD
 * DES? D368DFE03120B5DF DES? 92A8FD8FEC2F0746 DES? 
 * ??
 * 
 * @param fileIn
 * @param key
 */
public static String decrypt(File fileIn, String key) {
    try {
        if (key.length() == 48) {
            String path = fileIn.getPath();
            // path = path.substring(0, path.length() - 5);

            byte[] bytK1 = string2Byte(key.substring(0, 16));
            byte[] bytK2 = string2Byte(key.substring(16, 32));
            byte[] bytK3 = string2Byte(key.substring(32, 48));

            FileInputStream fis = new FileInputStream(path);
            byte[] bytIn = new byte[(int) fileIn.length()];
            for (int i = 0; i < fileIn.length(); i++) {
                bytIn[i] = (byte) fis.read();
            }

            // 
            byte[] bytOut = decryptByDES(decryptByDES(decryptByDES(bytIn, bytK3), bytK2), bytK1);

            fis.close();

            return new String(bytOut);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

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