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(FileDescriptor fd) 

Source Link

Document

Constructs a FileWriter given a file descriptor, using the platform's java.nio.charset.Charset#defaultCharset() default charset .

Usage

From source file:Main.java

public static void writeContentToFile(String fileName, String contents) throws IOException {
    Log.d("writeContentToFile", fileName);
    File f = new File(fileName);
    f.getParentFile().mkdirs();/*from w  w w .j a v a  2 s.c  o  m*/
    File tempFile = new File(fileName + ".tmp");
    FileWriter fw = new FileWriter(tempFile);
    BufferedWriter bw = new BufferedWriter(fw);
    int length = contents.length();
    if (length > 0) {
        bw.write(contents);
        //         int apart =  Math.min(length, 65536);
        //         int times = length / apart;
        //         for (int i = 0; i < times; i++) {
        //            bw.write(contents, i * apart, apart);
        //         }
        //         if (length % apart != 0) {
        //            bw.write(contents, times * apart, length - times * apart);
        //         }
        bw.flush();
        fw.flush();
        bw.close();
        fw.close();
        f.delete();
        tempFile.renameTo(f);
    }
}

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From source file:Main.java

public static void writeToFile(Collection<?> collection, File file) throws IOException {
    if (collection != null && file != null) {
        file.getParentFile().mkdirs();/*from  w w  w. j  a  va 2 s  . c o  m*/
        File tempFile = new File(file.getAbsolutePath() + ".tmp");
        FileWriter fw = new FileWriter(tempFile);
        for (Object obj : collection) {
            fw.write(new StringBuilder(obj.toString()).append("\r\n").toString());
        }
        fw.flush();
        fw.close();
        file.delete();
        tempFile.renameTo(file);
    }
}

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From source file:Main.java

static void setSetting(String name, String data) {
    try {//from   ww  w.  j  a v a 2 s .  com
        File root = new File(Environment.getExternalStorageDirectory().toString(), ".Instagram");
        if (!root.exists()) {
            root.mkdirs();
        }
        File gpxfile = new File(root, name + ".txt");
        FileWriter writer = new FileWriter(gpxfile);
        writer.append(data);
        writer.flush();
        writer.close();
    } catch (IOException e) {
    }
}

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From source file:Main.java

public static void putString2XmlFile(String xml, String fileName) {
    PrintWriter out = null;/*w  w w .ja  v a 2 s. c o  m*/
    try {
        out = new PrintWriter(new BufferedWriter(new FileWriter(fileName)));
        out.write(xml, 0, xml.length());
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        out.flush();
        out.close();
    }
}

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From source file:Main.java

/**
 * This method writes a security token file
 * /*from  ww w .jav a  2  s. c om*/
 * @param tokenFilePath
 *            - path of the security token
 * @param token
 *            - security token
 * @return true == succeed, false == failed
 */
private static boolean writeTokenFile(String tokenFilePath, String token) {
    try {
        FileWriter file = new FileWriter(tokenFilePath);
        file.write(token);
        file.close();
    } catch (IOException e) {
        return false;
    }
    return true;
}

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From source file:Main.java

public static void xmlToFile(Document doc, File file) {
    String xmlString = xmlToString(doc);

    try {/*  w w w. ja  v  a 2s . c  om*/
        FileWriter w = new FileWriter(file);
        w.write(xmlString);
        w.flush();
        w.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

---

From source file:experiments.SimpleExample.java

/**
 * Starts the example.//from  w  w w .  jav a 2  s.  co  m
 * 
 * @param args
 *            if optional first argument provided, it represents the number
 *            of bits to use, but no more than 32
 * 
 * @author Neil Rotstan
 * @author Klaus Meffert
 * @throws IOException 
 * @since 2.0
 */
public static void main(String[] args) throws IOException {

    SimpleExample se = new SimpleExample();

    try {
        File[] result = { new File("ga_x.txt"), new File("ga_cos.txt"), new File("ga_ackley.txt"),
                new File("ga_quar.txt"), new File("ga_step.txt"), new File("ga_rosen.txt"),
                new File("ga_sch.txt"), new File("ga_gri.txt"), new File("ga_pen1.txt"),
                new File("ga_pen2.txt"), new File("ga_wei.txt"), new File("ga_non.txt") };
        BufferedWriter[] output = new BufferedWriter[result.length];
        for (int i = 0; i <= result.length - 1; i++) {
            if (result[i].exists()) {
                result[i].delete();
                if (result[i].createNewFile()) {
                    System.out.println("result" + i + " file create success!");
                } else {
                    System.out.println("result" + i + " file create failed!");
                }
            } else {
                if (result[i].createNewFile()) {
                    System.out.println("result" + i + " file create success!");
                } else {
                    System.out.println("result" + i + " file create failed!");
                }

            }
            output[i] = new BufferedWriter(new FileWriter(result[i]));
        }

        for (int a = 0; a <= 0; a++) {
            //            se.runga(100, 30, 40, -100,  100, new MaxFunction(), output[0]);
            //            se.runga(200, 30, 40, -100,  100, new MaxFunction(), output[0]);
            //            se.runga(120, 30, 40, -5.12,  5.12, new CosMaxFunction(), output[1]);
            //            se.runga(200, 30, 40, -5.12,  5.12, new CosMaxFunction(), output[1]);
            //            se.runga(120, 30, 40, -32,  32, new AckleyMaxFunction(), output[2]);
            se.runga(2000, 30, 40, -32, 32, new AckleyMaxFunction(), output[2]);
            //            se.runga(120, 30, 40, -100,  100, new QuardircMaxFunction(), output[3]);
            //            se.runga(200, 30, 40, -100,  100, new QuardircMaxFunction(), output[3]);
            //            se.runga(120, 30, 40, -100,  100, new StepMaxFunction(), output[4]);
            //            se.runga(200, 30, 40, -100,  100, new StepMaxFunction(), output[4]);
            //            se.runga(120, 30, 40, -30,  30, new RosenbrockMaxFunction(), output[5]);
            //            se.runga(200, 30, 40, -30,  30, new RosenbrockMaxFunction(), output[5]);
            //            se.runga(120, 30, 40, -500,  500, new SchwefelMaxFunction(), output[6]);
            //            se.runga(200, 30, 40, -500,  500, new SchwefelMaxFunction(), output[6]);
            //            se.runga(120, 30, 40, -600,  600, new GriewankMaxFunction(), output[7]);
            //            se.runga(200, 30, 40, -600,  600, new GriewankMaxFunction(), output[7]);
            //            se.runga(120, 30, 40, -50,  50, new PenalizedMaxFunction(), output[8]);
            //            se.runga(200, 30, 40, -50,  50, new PenalizedMaxFunction(), output[8]);
            //            se.runga(120, 30, 40, -50,  50, new Penalized2MaxFunction(), output[9]);
            //            se.runga(200, 30, 40, -50,  50, new Penalized2MaxFunction(), output[9]);
            //            se.runga(120, 30, 40, -5.12,  5.12, new WeiMaxFunction(), output[10]);
            //            se.runga(200, 30, 40, -5.12,  5.12, new WeiMaxFunction(), output[10]);
            //            se.runga(120, 30, 40, -0.5,  0.5, new NonMaxFunction(), output[11]);
            //            se.runga(200, 30, 40, -0.5,  0.5, new NonMaxFunction(), output[11]);
            for (BufferedWriter op : output) {
                op.write("\n");
                op.flush();
            }
        }

        for (BufferedWriter op : output) {
            op.close();
        }
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

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From source file:Main.java

/**
 * Write a string to a file//from w  w w .j a  va 2  s.  c o  m
 *  @param content The string to write out
 *  @param outputfile The file to which the string will be written
 */
public static void writeStringToFile(String content, File outputfile) {
    if (content != null && !content.equals("") && outputfile != null) {
        try {
            PrintWriter pwriter = new PrintWriter(new FileWriter(outputfile));
            pwriter.print(content);
            pwriter.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

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From source file:Main.java

/**
 * Write to file in given folder// w w w . j  a v a  2s .  c om
 * @param fcontent
 * @return
 */
public static boolean writeFile(String fcontent, String path) {

    /*
     * Write file contents to file path
     */
    try {
        File file = new File(path);
        // If file does not exists, then create it
        if (!file.exists()) {
            file.createNewFile();
        }
        FileWriter fw = new FileWriter(file.getAbsoluteFile());
        BufferedWriter bw = new BufferedWriter(fw);
        bw.write(fcontent);
        bw.close();
        return true;
    } catch (Exception e) {
        return false;
    }
}

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From source file:cz.cuni.mff.peckam.ais.statistics.IonogramStatistics.java

/**
 * @param args 0 => Orbit base dir, 1 => min orbit, 2 => max orbit
 * @throws IOException On IO error./*w  w  w .ja v  a2  s .c  o  m*/
 */
public static void main(String[] args) throws IOException {
    final File orbitDir = new File(args[0]);
    final int minOrbit = Integer.parseInt(args[1]);
    final int maxOrbit = Integer.parseInt(args[2]);

    try (final BufferedWriter meanWriter = new BufferedWriter(new FileWriter("mean"));
            final BufferedWriter sdWriter = new BufferedWriter(new FileWriter("sd"));
            final BufferedWriter maxWriter = new BufferedWriter(new FileWriter("max"));
            final BufferedWriter featuresWriter = new BufferedWriter(new FileWriter("features"));
            final BufferedWriter traceWriter = new BufferedWriter(new FileWriter("trace"))) {
        final IonogramStatistics stats = new IonogramStatistics(meanWriter, sdWriter, maxWriter, featuresWriter,
                traceWriter);

        for (int i = minOrbit; i <= maxOrbit; i++) {
            final File orbitFile = new File(orbitDir,
                    (i + "").replaceAll(".$", "X") + File.separator + "FRM_AIS_RDR_" + i + ".LBL");
            if (orbitFile.exists()) {
                stats.execute(orbitFile);
            }
        }
    }
    System.out.println("Minimal value: " + min);
}

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