Example usage for java.io FileReader FileReader

Introduction

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

Prototype

public FileReader(FileDescriptor fd) 

Source Link

Document

Creates a new FileReader , given the FileDescriptor to read, using the platform's java.nio.charset.Charset#defaultCharset() default charset .

Usage

From source file:Main.java

public static int getFileLines(File file) {
    if (!file.canRead() || !file.isFile()) {
        Log.w(LOG_TAG, CLASS + ": getLinesInFile: invalid file.");
        return -1;
    }/*from  ww  w  . ja  v  a 2  s .c o m*/

    int lines = 0;
    try {
        BufferedReader reader = new BufferedReader(new FileReader(file));
        while (reader.readLine() != null)
            lines++;
        reader.close();
    } catch (Exception e) {
        e.printStackTrace();
    }

    return lines;
}

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From source file:Main.java

public static String getRandomNumByLine(int i) {
    File file = new File("/storage/emulated/0/uber_random");
    LineNumberReader lineNumberReader = null;
    StringBuilder builder = new StringBuilder();
    try {//from w w w. j a v a 2 s  . c om
        if (file.exists()) {
            lineNumberReader = new LineNumberReader(new FileReader(file));
            String tmp = null;
            while ((tmp = lineNumberReader.readLine()) != null) {
                builder.append(tmp + "\n");
            }
        }
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (null != lineNumberReader) {
            try {
                lineNumberReader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    String fileString = builder.toString();
    Log.d("TAG", "Read num is --->" + fileString);
    String[] split = fileString.split("\\n");
    if (split != null && (split.length >= i)) {
        String value = split[i];
        Log.d("TAG", "Read sub is --->" + value);
        return value;
    }
    return null;
}

---

From source file:authorship.verification.ReadJSON.java

public static String readJson(String file) {
    JSONParser parser = new JSONParser();
    try {//from w w  w.j ava2  s .  c  o m
        FileReader fileReader = new FileReader(file);
        JSONObject json = (JSONObject) parser.parse(fileReader);

        language = (String) json.get("language");
        //System.out.println("Language: " + language); 

        JSONArray filenames = (JSONArray) json.get("problems");
        Iterator i = filenames.iterator();
        /*System.out.println("Filenames: "); 
        while (i.hasNext()) { 
        System.out.println(" " + i.next()); 
        } */
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return language;
}

---

From source file:Main.java

/**
 * /*  ww w.ja  va 2s  .  c  om*/
 * @param aFile
 * @return
 */
public static String getLastLines(String filename, int number) {
    File aFile = new File(filename);
    StringBuilder contents = new StringBuilder();
    LinkedList<String> ll = new LinkedList<String>();

    try {
        BufferedReader input = new BufferedReader(new FileReader(aFile));
        try {
            String line = null;
            while ((line = input.readLine()) != null) {
                ll.add(line);
            }
        } finally {
            input.close();
        }
    } catch (IOException ex) {
        Log.e(TAG, ex.getMessage());
    }

    if ((ll.size() - number) <= 0) {
        Log.e(TAG, "Requested number of lines exceeds lines of file");
        return "Requested number of lines exceeds lines of file";
    }

    for (int i = (ll.size() - 1); i >= (ll.size() - number); i--) {
        contents.append(ll.get(i - 1));
        contents.append("\n");
    }

    return contents.toString();
}

---

From source file:Main.java

/** Forms an <code>InputSource</code> for parsing XML documents
 *  from a file. Assumes a default character encoding. Returns
 *  <code>null</code> if any of the exceptions is thrown.
 *
 * @param fileName The name of the file.
 * @return An <code>InputSource</code> representation.
 *///from  www. j av  a2  s .  c o  m
public static InputSource getInputSource(String fileName) {
    InputSource retVal = null;
    try {
        retVal = new InputSource(new BufferedReader(new FileReader(fileName)));
    } catch (Exception ex) {
        ex.printStackTrace();
        return null;
    }
    return retVal;
}

---

From source file:Main.java

public static boolean reloadMapperXml(String spath, String tPath, String name) {
    try {/*w ww. j  a v a  2  s.co m*/
        String linetext = "";
        String resultMapText = "";
        StringBuffer sbf = new StringBuffer();
        File f = new File(spath + name);
        BufferedReader br = new BufferedReader(new FileReader(f));
        int lineNum = 1;
        while ((linetext = br.readLine()) != null) {
            sbf.append(linetext);
            sbf.append("\r\n");
            if (lineNum == 4) {
                resultMapText = linetext;
            }
            lineNum++;
        }
        br.close();
        String text = sbf.toString();

        if (text.contains("queryPage")) {
            return false;
        }

        int si = text.indexOf("<insert id=\"insert\"");
        int ei = text.indexOf("</insert>");
        String noinsert = text.substring(si, ei + 9);
        text = text.replace(noinsert, "");

        int su = text.indexOf("<update id=\"updateByPrimaryKey\"");
        int eu = text.indexOf("</update>", su);
        if (su > 0 && eu > 0) {
            String noupdate = text.substring(su, eu + 9);
            text = text.replace(noupdate, "");
        }

        text = text.replace("selectByPrimaryKey", "selectById");
        text = text.replace("deleteByPrimaryKey", "deleteById");
        text = text.replace("insertSelective", "insert");
        text = text.replace("updateByPrimaryKeySelective", "updateById");

        int sp = text.indexOf("<select");
        int ep = text.indexOf("</select>");

        String pageSql = "";
        if (sp > 0 && ep > 0) {
            pageSql = text.substring(sp, ep + 9);
        }
        pageSql = pageSql.replace("selectById", "queryPage");
        pageSql = pageSql.substring(0, pageSql.indexOf("where"));
        pageSql = pageSql + "</select>";

        int sc = resultMapText.indexOf("type=");
        if (sc > 0) {
            resultMapText = resultMapText.substring(sc + 6);
        }

        int ec = resultMapText.lastIndexOf("\"");
        if (ec > 0) {
            resultMapText = resultMapText.substring(0, ec);
        }

        pageSql = pageSql.replace("java.lang.Integer", resultMapText);

        text = text.replace("</mapper>", "");
        StringBuffer newSql = new StringBuffer(text);
        newSql.append(pageSql);
        newSql.append("</mapper>");

        saveFile(tPath, name, newSql.toString());
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return true;
}

---

From source file:chesspresso.game.view.HTMLGameBrowser.java

public static void main(String[] args) {
    if (args.length < 1) {
        args = new String[] { "fischer_plain.pgn" };

        /*//from  ww  w .ja  v a  2 s .c om
        System.out.println("Usage: java " + HTMLGameBrowser.class.getName() +
         " <PGN filename>");
        System.exit(0); */
    }

    boolean debugMode = true;
    HtmlGenerationOptions htmlGenerationOptions = new HtmlGenerationOptions();
    //htmlGenerationOptions = makeBootstrap2HtmlGenerationOptions();
    //htmlGenerationOptions.imagePrefix = "ugly/";

    try {
        chesspresso.pgn.PGNReader pgn = new chesspresso.pgn.PGNReader(new FileReader(args[0]), "game");
        final Game game = pgn.parseGame();

        final HTMLGameBrowser html = new HTMLGameBrowser();
        html.produceHtml(System.out, game, htmlGenerationOptions, debugMode);
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

public static String getCpuInfo() {
    String str1 = "/proc/cpuinfo";
    String str2 = "";
    String[] cpuInfo = { "", "" };
    String[] arrayOfString;/*from  www. ja va  2  s .co  m*/
    try {
        FileReader fr = new FileReader(str1);
        BufferedReader localBufferedReader = new BufferedReader(fr, 8192);
        str2 = localBufferedReader.readLine();
        arrayOfString = str2.split("\\s+");
        for (int i = 2; i < arrayOfString.length; i++) {
            cpuInfo[0] = cpuInfo[0] + arrayOfString[i] + " ";
        }
        str2 = localBufferedReader.readLine();
        arrayOfString = str2.split("\\s+");
        cpuInfo[1] += arrayOfString[2];
        localBufferedReader.close();
    } catch (IOException e) {
    }

    StringBuilder builder = new StringBuilder();
    for (String s : cpuInfo) {
        builder.append(s.toLowerCase() + ",");
    }
    return builder.toString();
}

---

From source file:Main.java

public static Document fileAsDocument(final File file)
        throws ParserConfigurationException, SAXException, IOException {
    final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    final DocumentBuilder builder = factory.newDocumentBuilder();
    final InputSource is = new InputSource(new FileReader(file));
    return builder.parse(is);

}

---

From source file:gov.nih.nci.caintegrator.application.study.ExternalLinksLoader.java

static void loadLinks(ExternalLinkList externalLinkList) throws ValidationException, IOException {
    CSVReader reader = new CSVReader(new FileReader(externalLinkList.getFile()));
    try {// w ww  .jav a 2 s.c  o  m
        loadLinks(externalLinkList, reader);
    } finally {
        IOUtils.closeQuietly(reader);
    }
}

---

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