Example usage for java.io FileWriter FileWriter

Introduction

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

Prototype

public FileWriter(File file, Charset charset) throws IOException 

Source Link

Document

Constructs a FileWriter given the File to write and java.nio.charset.Charset charset .

Usage

From source file:Main.java

public static void appendLog(String text) {
    File logFile = new File(Environment.getExternalStorageDirectory() + "/clr_log.file");
    if (!logFile.exists()) {
        try {// w w w . j av  a  2 s . c  o  m
            logFile.createNewFile();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    try {
        BufferedReader buf = new BufferedReader(new FileReader(logFile));

        String line = "";
        ArrayList<String> lines = new ArrayList<String>();

        while ((line = buf.readLine()) != null) {
            lines.add(line);
        }

        int size = lines.size();

        //Every time the number of lines go over 1000, only add the last 500. This will keep its size to a minimum
        int i = lines.size() - 500;
        if (i < 0) {
            i = 0;
        }

        buf.close();

        BufferedWriter bufW = new BufferedWriter(new FileWriter(logFile, true));

        if (size > 1000) {
            bufW.write("");
            for (; i < lines.size(); i++) {
                bufW.append(line);
            }
        }

        bufW.append(text + "\n");
        bufW.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

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From source file:dao.EntryDaoTest.java

@BeforeClass
public static void setUpClass() {
    String fSeparator = File.separator;
    try {// ww w. jav a 2 s  .c o m
        File folder = new File(
                System.getProperty("user.dir") + fSeparator + "MyDiaryBook" + fSeparator + "Users" + fSeparator
                        + "Panagiwtis Georgiadis" + fSeparator + "Entries" + fSeparator + "Texnologia2");
        folder.mkdirs();

        File textFolder = new File(folder.toString() + fSeparator + "Texts");
        textFolder.mkdirs();
        File textFile = new File(textFolder.toString() + fSeparator + "test.txt");
        BufferedWriter bw;
        FileWriter fw;
        fw = new FileWriter(textFile, true);
        bw = new BufferedWriter(fw);
        bw.write("test0123456789");
        if (bw != null)
            bw.close();
        fw.close();
        File imageFolder = new File(folder.toString() + fSeparator + "Images");
        imageFolder.mkdirs();
        String imageSourcePath = System.getProperty("user.dir") + fSeparator + "src" + fSeparator + "test"
                + fSeparator + "java" + fSeparator + "resources" + fSeparator + "testImg.jpg";
        File imageSourceFile = new File(imageSourcePath);
        FileUtils.copyFileToDirectory(imageSourceFile, imageFolder);

        String videoSourcePath = System.getProperty("user.dir") + fSeparator + "src" + fSeparator + "test"
                + fSeparator + "java" + fSeparator + "resources" + fSeparator + "testVideo.mp4";
        File videoSourceFile = new File(videoSourcePath);
        File videoFolder = new File(folder.toString() + fSeparator + "Videos");
        videoFolder.mkdirs();
        FileUtils.copyFileToDirectory(videoSourceFile, videoFolder);
    } catch (IOException ex) {
        Logger.getLogger(EntryDaoTest.class.getName()).log(Level.SEVERE, null, ex);
    }
}

---

From source file:csv.FileManager.java

static public boolean appendItems(String fileName, ArrayList<ArrayList<String>> data,
        boolean firstRowIsHeader) {
    try {/*w ww .j  a  va  2s.  c om*/
        BufferedWriter out = new BufferedWriter(new FileWriter(fileName, true));
        CSVWriter writer = new CSVWriter(out);
        String[] t = new String[0];
        for (ArrayList<String> row : data) {
            if (!firstRowIsHeader) {
                boolean found = false;
                for (String str : row) {
                    if (!str.isEmpty()) {
                        found = true;
                    }
                }
                if (found)
                    writer.writeNext(row.toArray(t));
            } else
                firstRowIsHeader = false;
        }
        out.close();
        return true;
    } catch (Exception e) {
        System.out.println(e.getMessage());
        return false;
    }
}

---

From source file:it.geosolutions.tools.io.file.writer.Writer.java

/**
 * Open 'destination' file in append mode and append content of the
 * 'toAppend' file//from   w  w  w .  ja  v a2 s . c  o m
 * 
 * @param toAppend
 * @param destination
 * @throws IOException
 */
public static void appendFile(File toAppend, File destination) throws IOException {
    FileWriter fw = null;
    BufferedWriter bw = null;
    LineIterator it = null;
    try {
        fw = new FileWriter(destination, true);
        bw = new BufferedWriter(fw);
        it = FileUtils.lineIterator(toAppend);
        while (it.hasNext()) {
            bw.append(it.nextLine());
            bw.newLine();
        }
        bw.flush();
    } finally {
        if (it != null) {
            it.close();
        }
        if (bw != null) {
            IOUtils.closeQuietly(bw);
        }
        if (fw != null) {
            IOUtils.closeQuietly(fw);
        }
    }
}

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From source file:Main.java

public static boolean writeFile(String filePath, String content, boolean append) {
    if (TextUtils.isEmpty(content)) {
        return false;
    }//  ww w  . ja va2  s.  co  m

    FileWriter fileWriter = null;
    try {
        makeDirs(filePath);
        fileWriter = new FileWriter(filePath, append);
        fileWriter.write(content);
        fileWriter.close();
        return true;
    } catch (IOException e) {
        throw new RuntimeException("IOException occurred. ", e);
    } finally {
        if (fileWriter != null) {
            try {
                fileWriter.close();
            } catch (IOException e) {
                throw new RuntimeException("IOException occurred. ", e);
            }
        }
    }
}

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From source file:com.codemage.sql.util.SonarQubeManager.java

public void createJavaFile(String JavaCode) {
    BufferedWriter bw = null;//from w w  w  . j  av  a 2  s  .c  om

    try {
        // APPEND MODE SET HERE
        bw = new BufferedWriter(new FileWriter(
                "E:\\Smile24\\Projects\\0005 - CAL\\sampleAnalyseCode\\src\\main\\java\\checkbook.java",
                false));
        bw.write(JavaCode);
        bw.newLine();
        bw.flush();
    } catch (IOException ioe) {
    } finally { // always close the file
        if (bw != null) {
            try {
                bw.close();
            } catch (IOException ioe2) {
                // just ignore it
            }
        }
    } // end try/catch/finally
}

---

From source file:fm.last.commons.io.LastFileUtils.java

/**
 * Appends the passed string to the passed file.
 * //from ww  w.  j a  v  a  2  s  . co  m
 * @param file File to append string to (will be created if it does not exist).
 * @param string String to append.
 * @throws IOException If an error occurs appending the string to the file.
 */
public static void appendStringToFile(File file, String string) throws IOException {
    BufferedWriter writer = new BufferedWriter(new FileWriter(file, true));
    writer.write(string);
    writer.close();
}

---

From source file:com.eftech.wood.controllers.test.Logger.java

protected void printInFile(String fileName, String str) { // For Check

    File file = new File("d:\\2\\" + fileName);

    // File file = new File("HMC exeption2.txt");
    try (FileWriter fileWriter = new FileWriter(file, true)) {
        fileWriter.write("-------> " + new Date() + "): \n");
        fileWriter.write(str + "\n\n");
    } catch (IOException ex) {
        // Logger.getLogger(ControllerMachine.class.getName()).log(Level.SEVERE,
        // null, ex);
    }/*from  w w w .j  a  va2 s  .  c  om*/

}

---

From source file:com.athena.peacock.common.core.util.SshExecUtil.java

/**
 * <pre>//from   ww w . j a v  a 2  s . co  m
 * 
 * </pre>
 * @param targetHost
 * @param commandList
 * @throws IOException 
 */
public static void executeCommand(TargetHost targetHost, List<String> commandList) throws IOException {
    fstream = new FileWriter(output, false);
    out = new BufferedWriter(fstream);

    for (String command : commandList) {
        out.write("[" + targetHost.getUsername() + "@" + targetHost.getHost() + " ~]$ " + command + "\n");
        out.write(executeCommand(targetHost, command));
    }

    IOUtils.closeQuietly(out);
}

---

From source file:com.hys.enterprise.dominoes.reporting.ReportBuilder.java

/**
 * Writes record to csv file/*from www  .j  ava2 s.  c o m*/
 * @param record
 * @throws IOException
 */
public void writeRecord(ReportRecord record) throws IOException {
    fileWriter = new FileWriter(file, true);
    CSVPrinter csvFilePrinter;
    csvFilePrinter = new CSVPrinter(fileWriter, csvFileFormat);
    if (!file.exists() || file.length() == 0) {
        csvFilePrinter.printRecord(record.getHeader());
    }
    csvFilePrinter.printRecord(record.getData());

    if (fileWriter != null) {
        fileWriter.flush();
        fileWriter.close();
    }
    csvFilePrinter.close();
}

---

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