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 main(String[] args) {
    String text = "JFileChooser, you're my only friend.";

    JFileChooser chooser = new JFileChooser();
    int result = chooser.showSaveDialog(null);

    if (result == JFileChooser.APPROVE_OPTION) {
        try {/*from w w w .  j  av a 2 s.  c o  m*/
            File file = chooser.getSelectedFile();
            FileWriter writer = new FileWriter(file);
            writer.write(text);
            writer.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JTextField nameTextField = new JTextField();
    frame.add(nameTextField, BorderLayout.NORTH);

    FileWriter writer = null;//from  w ww. j av a  2 s . c  o  m
    try {
        writer = new FileWriter("filename.txt");
        nameTextField.write(writer);
    } catch (IOException exception) {
        System.err.println("Save oops");
        exception.printStackTrace();
    } finally {
        if (writer != null) {
            try {
                writer.close();
            } catch (IOException exception) {
                System.err.println("Error closing writer");
                exception.printStackTrace();
            }
        }
    }

    frame.setSize(250, 100);
    frame.setVisible(true);
}

From source file:AllCapsDemo.java

License:asdf

public static void main(String[] arguments) {
    String sourceName = "asdf";
    try {/*from w  w w.  j a  va2s  . co m*/
        File source = new File(sourceName);
        File temp = new File("cap" + sourceName + ".tmp");

        FileReader fr = new FileReader(source);
        BufferedReader in = new BufferedReader(fr);

        FileWriter fw = new FileWriter(temp);
        BufferedWriter out = new BufferedWriter(fw);

        boolean eof = false;
        int inChar = 0;
        do {
            inChar = in.read();
            if (inChar != -1) {
                char outChar = Character.toUpperCase((char) inChar);
                out.write(outChar);
            } else
                eof = true;
        } while (!eof);
        in.close();
        out.close();

        boolean deleted = source.delete();
        if (deleted)
            temp.renameTo(source);
    } catch (Exception se) {
        System.out.println("Error - " + se.toString());
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");

    File outputFile = new File("jsoutput.txt");
    System.out.println("Script output will be written to " + outputFile.getAbsolutePath());

    FileWriter writer = new FileWriter(outputFile);
    ScriptContext defaultCtx = engine.getContext();
    defaultCtx.setWriter(writer);//from w  w  w.ja  v  a2 s.c om
    String script = "print('Hello custom output writer')";
    engine.eval(script);
    writer.close();

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    ScriptContext ctx = new SimpleScriptContext();

    // Get the reader and writers from the script context
    Reader inputReader = ctx.getReader();
    Writer outputWriter = ctx.getWriter();
    Writer errWriter = ctx.getErrorWriter();

    // Write all script outputs to an out.txt file
    Writer fileWriter = new FileWriter("out.txt");
    ctx.setWriter(fileWriter);/*from   www . j  a v  a  2  s  . c  om*/
}

From source file:CharArrayWriterDemo.java

public static void main(String args[]) throws IOException {
    CharArrayWriter f = new CharArrayWriter();
    String s = "This should end up in the array";
    char buf[] = new char[s.length()];
    s.getChars(0, s.length(), buf, 0);/*from  ww  w. jav a  2 s .c  om*/
    f.write(buf);
    System.out.println(f.toString());

    char c[] = f.toCharArray();
    for (int i = 0; i < c.length; i++) {
        System.out.print(c[i]);
    }

    FileWriter f2 = new FileWriter("test.txt");
    f.writeTo(f2);
    f2.close();
    f.reset();
    for (int i = 0; i < 3; i++)
        f.write('X');
}

From source file:DataFileTest.java

public static void main(String[] args) {
    Employee staff = new Employee("Java Source", 35500);

    staff.raiseSalary(5.25);//from   w  w  w.ja  va 2s . c  om

    try {
        PrintWriter out = new PrintWriter(new FileWriter("employee.dat"));
        writeData(staff, out);
        out.close();
    } catch (IOException e) {
        System.out.print("Error: " + e);
        System.exit(1);
    }

    try {
        BufferedReader in = new BufferedReader(new FileReader("employee.dat"));
        Employee e = readData(in);
        e.print();
        in.close();
    } catch (IOException e) {
        System.out.print("Error: " + e);
        System.exit(1);
    }
}

From source file:Main.java

public static void main(String[] args) {
    try {/*from   w  ww. j a v a2s .  c o  m*/
        BufferedReader input = new BufferedReader(new FileReader(args[0]));
        ArrayList list = new ArrayList();
        String line;
        while ((line = input.readLine()) != null) {
            list.add(line);
        }
        input.close();

        Collections.reverse(list);

        PrintWriter output = new PrintWriter(new BufferedWriter(new FileWriter(args[1])));
        for (Iterator i = list.iterator(); i.hasNext();) {
            output.println((String) i.next());
        }
        output.close();
    } catch (IOException e) {
        System.err.println(e);
    }
}

From source file:OutputStreamDemo.java

public static void main(String[] args) throws IOException {
    OutputStream os1 = new FileOutputStream("tmp1.dat");
    writeints("Unbuffered: ", 1000000, os1);
    OutputStream os2 = new BufferedOutputStream(new FileOutputStream("tmp2.dat"));
    writeints("Buffered:   ", 1000000, os2);
    Writer wr1 = new FileWriter("tmp1.dat");
    writeints("Unbuffered: ", 1000000, wr1);
    Writer wr2 = new BufferedWriter(new FileWriter("tmp2.dat"));
    writeints("Buffered:   ", 1000000, wr2);
}

From source file:SVGGraphics2DDemo.java

public static void main(String args[]) throws IOException {
    SVGGraphics2DDemo sv2Demo = new SVGGraphics2DDemo();
    DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
    Document doc = domImpl.createDocument(null, "svg", null);
    SVGGraphics2D svg = new SVGGraphics2D(doc);
    sv2Demo.paint(svg);/*from  ww  w .  j a v  a 2s. c  o  m*/
    svg.stream(new FileWriter("booktitle.svg"), false);
}