Example usage for java.io FileReader FileReader

Introduction

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

Prototype

public FileReader(FileDescriptor fd) 

Source Link

Document

Creates a new FileReader , given the FileDescriptor to read, using the platform's java.nio.charset.Charset#defaultCharset() default charset .

Usage

From source file:Main.java

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

    Class.forName("oracle.jdbc.driver.OracleDriver");
    Connection conn = DriverManager.getConnection(url, username, password);
    conn.setAutoCommit(false);/*from ww  w .j  a  va2s .  c  om*/

    String sql = "INSERT INTO documents (name, description, data) VALUES (?, ?, ?)";
    PreparedStatement stmt = conn.prepareStatement(sql);
    stmt.setString(1, "a.txt");
    stmt.setString(2, "b");

    File data = new File("C:\\a.txt");
    FileReader reader = new FileReader(data);
    stmt.setCharacterStream(3, reader, (int) data.length());
    stmt.execute();

    conn.commit();
    reader.close();
    conn.close();

}

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From source file:GZIPcompress.java

public static void main(String[] args) throws IOException {
    if (args.length == 0) {
        System.out.println("Usage: \nGZIPcompress file\n" + "\tUses GZIP compression to compress "
                + "the file to test.gz");
        System.exit(1);/* ww w  .  j  a  v  a2  s. co  m*/
    }
    BufferedReader in = new BufferedReader(new FileReader(args[0]));
    BufferedOutputStream out = new BufferedOutputStream(new GZIPOutputStream(new FileOutputStream("test.gz")));
    System.out.println("Writing file");
    int c;
    while ((c = in.read()) != -1)
        out.write(c);
    in.close();
    out.close();
    System.out.println("Reading file");
    BufferedReader in2 = new BufferedReader(
            new InputStreamReader(new GZIPInputStream(new FileInputStream("test.gz"))));
    String s;
    while ((s = in2.readLine()) != null)
        System.out.println(s);
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
    engine.eval(new FileReader("res/nashorn2.js"));
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
    DocumentBuilder domBuilder = domFactory.newDocumentBuilder();

    Document newDoc = domBuilder.newDocument();
    Element rootElement = newDoc.createElement("CSV2XML");
    newDoc.appendChild(rootElement);/*w w  w  . j  a v  a 2s.  c  o m*/

    BufferedReader csvReader = new BufferedReader(new FileReader("csvFileName.txt"));
    String curLine = csvReader.readLine();
    String[] csvFields = curLine.split(",");
    Element rowElement = newDoc.createElement("row");
    for (String value : csvFields) {
        Element curElement = newDoc.createElement(value);
        curElement.appendChild(newDoc.createTextNode(value));
        rowElement.appendChild(curElement);
        rootElement.appendChild(rowElement);
    }
    csvReader.close();
    TransformerFactory tranFactory = TransformerFactory.newInstance();
    Transformer aTransformer = tranFactory.newTransformer();
    Source src = new DOMSource(newDoc);
    Result dest = new StreamResult(new File("xmlFileName"));
    aTransformer.transform(src, dest);
}

---

From source file:MainClass.java

public static void main(String[] args) throws IOException {
    File documentFile = new File(args[0]);
    File schemaFile = new File(args[1]);

    SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);

    Schema schema = null;/*from   ww  w  . ja va 2s .c o  m*/
    try {
        schema = factory.newSchema(schemaFile);
    } catch (SAXException e) {
        fail(e);
    }

    Validator validator = schema.newValidator();

    SAXSource source = new SAXSource(new InputSource(new FileReader(documentFile)));

    try {
        validator.validate(source);
    } catch (SAXException e) {
        fail(e);
    }
}

---

From source file:chat.jsonTest.java

/**
 * @param args the command line arguments
 *//*ww  w  . j a va 2s. com*/
public static void main(String[] args) throws ParseException, IOException {
    // TODO code application logic here
    JSONParser parser = new JSONParser();
    String fullPath = "userInfo.json";
    //BufferedReader reader = new BufferedReader(new FileReader(fullPath));

    Object obj = parser.parse(new FileReader("userInfo.json"));
    JSONObject jsonObject = (JSONObject) obj;
    /*while ((line = reader.readLine()) != null) {
        System.out.println(line);
    }*/
    JSONArray lang = (JSONArray) jsonObject.get("userInfo");
    Iterator i = lang.iterator();

    // take each value from the json array separately
    while (i.hasNext()) {
        JSONObject innerObj = (JSONObject) i.next();
        System.out
                .println("username " + innerObj.get("username") + " with password " + innerObj.get("password"));
    }

}

---

From source file:CompRcv.java

public static void main(String[] args) throws Exception {
    Socket sock = new Socket(args[0], Integer.parseInt(args[1]));
    GZIPOutputStream zip = new GZIPOutputStream(sock.getOutputStream());
    String line;//from ww w  .ja va  2s.  co m
    BufferedReader bis = new BufferedReader(new FileReader(args[2]));
    while (true) {
        try {
            line = bis.readLine();
            if (line == null)
                break;
            line = line + "\n";
            zip.write(line.getBytes(), 0, line.length());
        } catch (Exception e) {
            break;
        }
    }
    zip.finish();
    zip.close();
    sock.close();
}

---

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. j ava2  s .  c  o  m

    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:dependencies.DependencyResolving.java

/**
 * @param args the command line arguments
 *//*from  w w  w  .j av a  2 s .  c  o m*/
public static void main(String[] args) {
    // TODO code application logic here
    JSONParser parser = new JSONParser(); //we use JSONParser in order to be able to read from JSON file
    try { //here we declare the file reader and define the path to the file dependencies.json
        Object obj = parser.parse(new FileReader(
                "C:\\Users\\Vladimir\\Documents\\NetBeansProjects\\DependenciesResolving\\src\\dependencies\\dependencies.json"));
        JSONObject project = (JSONObject) obj; //a JSON object containing all the data in the .json file
        JSONArray dependencies = (JSONArray) project.get("dependencies"); //get array of objects with key "dependencies"
        System.out.print("We need to install the following dependencies: ");
        Iterator<String> iterator = dependencies.iterator(); //define an iterator over the array "dependencies"
        while (iterator.hasNext()) {
            System.out.println(iterator.next());
        } //on the next line we declare another object, which parses a Parser object and reads from all_packages.json
        Object obj2 = parser.parse(new FileReader(
                "C:\\Users\\Vladimir\\Documents\\NetBeansProjects\\DependenciesResolving\\src\\dependencies\\all_packages.json"));
        JSONObject tools = (JSONObject) obj2; //a JSON object containing all thr data in the file all_packages.json
        for (int i = 0; i < dependencies.size(); i++) {
            if (tools.containsKey(dependencies.get(i))) {
                System.out.println(
                        "In order to install " + dependencies.get(i) + ", we need the following programs:");
                JSONArray temporaryArray = (JSONArray) tools.get(dependencies.get(i)); //a temporary JSON array in which we store the keys and values of the dependencies
                for (i = 0; i < temporaryArray.size(); i++) {
                    System.out.println(temporaryArray.get(i));
                }
                ArrayList<Object> arraysOfJsonData = new ArrayList<Object>(); //an array in which we will store the keys of the objects, after we use the values and won't need them anymore
                for (i = 0; i < temporaryArray.size(); i++) {
                    System.out.println("Installing " + temporaryArray.get(i));
                }
                while (!temporaryArray.isEmpty()) {

                    for (Object element : temporaryArray) {

                        if (tools.containsKey(element)) {
                            JSONArray secondaryArray = (JSONArray) tools.get(element); //a temporary array within the scope of the if-statement
                            if (secondaryArray.size() != 0) {
                                System.out.println("In order to install " + element + ", we need ");
                            }
                            for (i = 0; i < secondaryArray.size(); i++) {
                                System.out.println(secondaryArray.get(i));
                            }

                            for (Object o : secondaryArray) {

                                arraysOfJsonData.add(o);
                                //here we create a file with the installed dependency
                                File file = new File(
                                        "C:\\Users\\Vladimir\\Documents\\NetBeansProjects\\DependenciesResolving\\src\\dependencies\\installed_modules\\"
                                                + o);
                                if (file.createNewFile()) {
                                    System.out.println(file.getName() + " is installed!");
                                } else {
                                }
                            }
                            secondaryArray.clear();
                        }
                    }
                    temporaryArray.clear();
                    for (i = 0; i < arraysOfJsonData.size(); i++) {
                        temporaryArray.add(arraysOfJsonData.get(i));
                    }
                    arraysOfJsonData.clear();
                }
            }
        }
        Set<String> keys = tools.keySet(); // here we define a set of keys of the objects in all_packages.json
        for (String s : keys) {
            File file = new File(
                    "C:\\Users\\Vladimir\\Documents\\NetBeansProjects\\DependenciesResolving\\src\\dependencies\\installed_modules\\"
                            + s);
            if (file.createNewFile()) {
                System.out.println(file.getName() + " is installed.");
            } else {
            }
        }
    } catch (IOException ex) {
        Logger.getLogger(DependencyResolving.class.getName()).log(Level.SEVERE, null, ex);
    } catch (ParseException ex) {
        Logger.getLogger(DependencyResolving.class.getName()).log(Level.SEVERE, null, ex);
    }
}

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From source file:bariopendatalab.ImportData.java

/**
 * @param args the command line arguments
 *//*  w  w  w .j av a2  s .c  om*/
public static void main(String[] args) {
    int i = 0;
    try {
        MongoClient client = new MongoClient("localhost", 27017);
        DBAccess dbaccess = new DBAccess(client);
        dbaccess.dropDB();
        dbaccess.createDB();
        FileReader reader = new FileReader(new File(args[0]));
        Iterable<CSVRecord> records = CSVFormat.EXCEL.withHeader().withIgnoreEmptyLines().withDelimiter(',')
                .parse(reader);
        i = 2;
        for (CSVRecord record : records) {
            String type = record.get("Tipologia");
            if (type == null || type.length() == 0) {
                Logger.getLogger(ImportData.class.getName()).log(Level.WARNING, "No type in line {0}", i);
            }

            String description = record.get("Nome");
            if (description != null && description.length() == 0) {
                description = null;
            }

            String address = record.get("Indirizzo");
            if (address != null && address.length() == 0) {
                address = null;
            }

            String civ = record.get("Civ");
            if (civ != null && civ.length() == 0) {
                civ = null;
            }

            if (address != null && civ != null) {
                address += ", " + civ;
            }

            String note = record.get("Note");
            if (note != null && note.length() == 0) {
                note = null;
            }

            String longitudine = record.get("Longitudine");
            String latitudine = record.get("Latitudine");
            if (longitudine != null && latitudine != null) {
                if (longitudine.length() > 0 && latitudine.length() > 0) {
                    try {
                        dbaccess.insert(type, description, address, note, Utils
                                .get2DPoint(Double.parseDouble(latitudine), Double.parseDouble(longitudine)));
                    } catch (NumberFormatException nex) {
                        dbaccess.insert(type, description, address, note, null);
                    }
                } else {
                    dbaccess.insert(type, description, address, note, null);
                }
            } else {
                dbaccess.insert(type, description, address, note, null);
            }
            i++;
        }
        reader.close();
    } catch (Exception ex) {
        Logger.getLogger(ImportData.class.getName()).log(Level.SEVERE, "Error line " + i, ex);
    }
}

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