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:MainClass.java

public static void main(String args[]) {
    try {//from   w w  w.  j  a  v  a  2 s . c o m
        FileWriter fw = new FileWriter(args[0]);

        BufferedWriter bw = new BufferedWriter(fw);

        for (int i = 0; i < 12; i++) {
            bw.write("Line " + i + "\n");
        }

        bw.close();
    } catch (Exception e) {
        System.out.println("Exception: " + e);
    }
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {

    FileWriter fw = new FileWriter(args[0]);
    BufferedWriter bw = new BufferedWriter(fw);
    PrintWriter pw = new PrintWriter(bw, false);

    pw.println(true);/*from   ww w. j  ava2s  .c  o m*/
    pw.println('A');
    pw.println(500);
    pw.println(40000L);
    pw.println(45.67f);
    pw.println(45.67);
    pw.println("Hello");
    pw.println(new Integer("99"));

    pw.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    BufferedWriter bufferedWriter = null;
    bufferedWriter = new BufferedWriter(new FileWriter("yourFile.txt"));
    bufferedWriter.write("string");
    bufferedWriter.newLine();/*  w ww . j  a va  2 s  . com*/
    bufferedWriter.write("string");
}

From source file:MainClass.java

public static void main(String[] args) {
    try {//from   w  w w.  j  a  va 2 s.co  m
        FileWriter fw = new FileWriter("LPT1:");

        PrintWriter pw = new PrintWriter(fw);
        String s = "www.java2s.com";

        int i, len = s.length();

        for (i = 0; len > 80; i += 80) {
            pw.print(s.substring(i, i + 80));
            pw.print("\r\n");
            len -= 80;
        }

        if (len > 0) {
            pw.print(s.substring(i));
            pw.print("\r\n");
        }

        pw.close();
    } catch (IOException e) {
        System.out.println(e);
    }
}

From source file:Main.java

public static void main(String args[]) throws IOException {

    int count = 0;
    double sum = 0.0;

    FileWriter fout = new FileWriter("test.txt");

    fout.write("2, 3.4,    5,6, 7.4, 9.1, 10.5, done");
    fout.close();//ww w.  j a  v  a  2s .  c  om

    FileReader fin = new FileReader("Test.txt");

    Scanner src = new Scanner(fin);

    src.useDelimiter(", *");

    while (src.hasNext()) {
        if (src.hasNextDouble()) {
            sum += src.nextDouble();
            count++;
        } else {
            String str = src.next();
            if (str.equals("done"))
                break;
            else {
                System.out.println("File format error.");
                return;
            }
        }
    }

    fin.close();
    System.out.println("Average is " + sum / count);
}

From source file:HTMLDemo.java

public static void main(String[] a) throws IOException {
    PrintWriter pw = new PrintWriter(new FileWriter("test.html"));
    DecimalFormat ff = new DecimalFormat("#0"), cf = new DecimalFormat("0.0");
    pw.println("<TABLE BORDER><TR><TH>Fahrenheit<TH>Celsius</TR>");
    for (double f = 100; f <= 400; f += 10) {
        double c = 5 * (f - 32) / 9;
        pw.println("<TR ALIGN=RIGHT><TD>" + ff.format(f) + "<TD>" + cf.format(c));
    }//w w  w  .  j  a  v  a  2s .  c om
    pw.println("</TABLE>");
    pw.close(); // Without this, the output file may be empty
}

From source file:Main.java

public static void main(String[] args) {
    String destFile = "test.txt";

    try (BufferedWriter bw = new BufferedWriter(new FileWriter(destFile))) {
        bw.append("test");
        bw.newLine();/*  w  ww . j a v  a 2  s . co m*/
        bw.append("test1");
        bw.newLine();
        bw.append("test2");
        bw.newLine();
        bw.append("test3");

        bw.flush();
    } catch (Exception e2) {
        e2.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    InputStream in = System.in;
    BufferedWriter bw = new BufferedWriter(new FileWriter("output.txt"));

    int letter;//  w w  w.  j a v a2s. co m

    while ((letter = in.read()) != -1) {
        bw.write((char) letter);
        bw.flush();
    }
}

From source file:MainClass.java

public static void main(String args[]) throws IOException {

    FileWriter fout = new FileWriter("test.txt");
    fout.write("2, 3.4,    5,6, 7.4, 9.1, 10.5, done");
    fout.close();//ww w.  j a v  a  2s.  c  o  m

    FileReader fin = new FileReader("Test.txt");
    Scanner src = new Scanner(fin);
    // Set delimiters to space and comma.
    // ", *" tells Scanner to match a comma and zero or more spaces as
    // delimiters.

    src.useDelimiter(", *");

    // Read and sum numbers.
    while (src.hasNext()) {
        if (src.hasNextDouble()) {
            System.out.println(src.nextDouble());
        } else {
            break;
        }
    }
    fin.close();
}

From source file:FileCopy.java

public static void main(String args[]) throws Exception {

    FileReader fr = new FileReader(args[0]);

    // Create a file writer
    FileWriter fw = new FileWriter(args[1]);

    // Read and copy characters
    int i;//from  w  ww .  j av a2  s  .  com
    while ((i = fr.read()) != -1) {
        fw.write(i);
    }
    fw.close();

    fr.close();
}