Example usage for java.io FileReader close

Introduction

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

Prototype

public void close() throws IOException

Source Link

Usage

From source file:MainClass.java

public static void main(String args[]) {
    try {//ww  w.  ja v  a2  s. c om
        FileReader fr = new FileReader(args[0]);
        BufferedReader br = new BufferedReader(fr);

        String s;
        while ((s = br.readLine()) != null)
            System.out.println(s);

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

From source file:MainClass.java

public static void main(String args[]) {

    try {//  ww w .  j a va  2s. c om

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

        FileWriter fw = new FileWriter(args[1]);

        int i;
        while ((i = fr.read()) != -1) {
            fw.write(i);
        }
        fw.close();

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

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  w w  .  ja  va 2 s  .  co  m*/
    while ((i = fr.read()) != -1) {
        fw.write(i);
    }
    fw.close();

    fr.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File file = new File("data.csv");
    FileReader fr = new FileReader(file);
    LineNumberReader lnr = new LineNumberReader(fr);
    // lnr.setLineNumber(400);
    String line = "";
    while ((line = lnr.readLine()) != null) {
        System.out.println("Line Number " + lnr.getLineNumber() + ": " + line);
    }/*w  ww .  j  a v  a2s .c o  m*/
    fr.close();
    lnr.close();
}

From source file:com.github.artifactresolver.MavenDependencyDownloader.java

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

    new MavenDependencyDownloader();

    parseCommandLine(args);/*from   w w  w  .j  a va 2  s. c  o  m*/

    RepositorySystemHelper repoSystemHelper = new RepositorySystemHelper(localRepo);
    dependencyResolver = new DependencyResolver(repoSystemHelper);

    if (artifacts.isEmpty()) {
        JSONParser jsonParser = new JSONParser();
        FileReader fileReader = new FileReader(new File(dependencyFile));
        JSONArray jsonArray = (JSONArray) jsonParser.parse(fileReader);
        fileReader.close();

        for (Object obj : jsonArray) {
            JSONObject jsonObj = (JSONObject) obj;
            String groupId = (String) jsonObj.get("groupId");
            String artifactId = (String) jsonObj.get("artifactId");
            String classifier = (String) jsonObj.get("classifier");
            String extension = (String) jsonObj.get("extension");
            String version = (String) jsonObj.get("version");

            DefaultArtifact artifact = new DefaultArtifact(groupId, artifactId, classifier, extension, version);
            dependencyResolver.downloadDependencyTree(artifact, javadoc, sources);
        }
    } else {
        for (DefaultArtifact artifact : artifacts) {
            dependencyResolver.downloadDependencyTree(artifact, javadoc, sources);
        }
    }
    log.info("Artifacts downloaded to \"{}\". Finished. Thank you.", localRepo);
}

From source file:MainClass.java

public static void main(String args[]) throws IOException {
    // Write output to a file.
    FileWriter fout = new FileWriter("test.txt");
    fout.write("2 3.4 5 6 7.4 9.1 10.5 done");
    fout.close();/*from   w w w  . ja  v a2s . co m*/

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

    Scanner src = new Scanner(fin);

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

From source file:Main.java

public static void main(String[] args) throws Exception {
    File archivo = new File("c:/Java_Dev/run.bat");
    FileReader fr = new FileReader(archivo);
    BufferedReader br = new BufferedReader(fr);

    Vector<String> lines = new Vector<String>();

    String line;//from  w ww .  j  ava 2  s  . co m
    while ((line = br.readLine()) != null) {
        lines.add(line);
    }
    JOptionPane.showMessageDialog(null, new JScrollPane(new JList(lines)));
    fr.close();
}

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);

    FileReader reader = null;
    try {//w w  w. jav  a  2  s .c o m
        reader = new FileReader("fileName.txt");
        nameTextField.read(reader, "fileName.txt");
    } catch (IOException exception) {
        System.err.println("Load oops");
        exception.printStackTrace();
    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (IOException exception) {
                System.err.println("Error closing reader");
                exception.printStackTrace();
            }
        }
    }

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

From source file:LabelSampleLoadText.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Label Focus Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel panel = new JPanel(new BorderLayout());
    JLabel label = new JLabel("Name: ");
    label.setDisplayedMnemonic(KeyEvent.VK_N);
    JTextField textField = new JTextField();
    label.setLabelFor(textField);/*  w w w  . j a va 2  s. c  om*/
    panel.add(label, BorderLayout.WEST);
    panel.add(textField, BorderLayout.CENTER);
    frame.add(panel, BorderLayout.NORTH);
    frame.add(new JButton("Somewhere Else"), BorderLayout.SOUTH);
    frame.setSize(250, 150);
    frame.setVisible(true);

    FileReader reader = null;
    try {
        String filename = "test.txt";
        reader = new FileReader(filename);
        textField.read(reader, filename);
    } catch (IOException exception) {
        System.err.println("Load oops");
    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (IOException exception) {
                System.err.println("Error closing reader");
                exception.printStackTrace();
            }
        }
    }

}

From source file:CopyCharacters.java

public static void main(String[] args) throws IOException {
    FileReader inputStream = null;
    FileWriter outputStream = null;

    try {//from w  w w  .  j  a va2  s .co  m
        inputStream = new FileReader("xanadu.txt");
        outputStream = new FileWriter("characteroutput.txt");

        int c;
        while ((c = inputStream.read()) != -1) {
            outputStream.write(c);
        }
    } finally {
        if (inputStream != null) {
            inputStream.close();
        }
        if (outputStream != null) {
            outputStream.close();
        }
    }
}