Example usage for java.io Reader close

List of usage examples for java.io Reader close

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Introduction

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

Prototype

public abstract void close() throws IOException;

Source Link

Document

Closes the stream and releases any system resources associated with it.

Usage

From source file:Main.java

public static void main(final String[] args) throws IOException {
    File infile = new File("/tmp/utf16.txt");
    FileInputStream inputStream = new FileInputStream(infile);
    Reader in = new InputStreamReader(inputStream, "UTF-16");
    int read;/*from w  w w .  j a v a  2  s  .  c om*/
    while ((read = in.read()) != -1) {
        System.out.print(Character.toChars(read));
    }
    in.close();
}

From source file:StreamTokenizerExample.java

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

    Reader r = new FileReader("in.txt");
    StreamTokenizer st = new StreamTokenizer(r);
    while (st.nextToken() != StreamTokenizer.TT_EOF) {
        System.out.println(st.sval);
    }/*w w w  . j  a v  a 2s .co  m*/
    r.close();
}

From source file:FileReaderWriterExample.java

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

    Reader r = new FileReader("in.txt");
    Writer w = new FileWriter("out.txt");
    int c;// w ww  .  j a  v  a 2 s .c  o  m
    while ((c = r.read()) != -1) {
        System.out.print((char) c);
        w.write(c);
    }
    r.close();
    w.close();
}

From source file:Main.java

public static void main(String[] args) {

    String s = "tutorial from java2s.com";

    CharBuffer cb = CharBuffer.allocate(100);

    Reader reader = new StringReader(s);

    try {//  ww  w  .  ja  v a  2  s .  co m
        reader.read(cb);

        cb.flip();

        // print the char buffer
        System.out.println(cb.toString());

        reader.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();

    Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL", "yourName", "mypwd");

    Statement stmt = conn.createStatement();

    createBlobClobTables(stmt);/*  w w  w  .  jav  a  2  s . c  om*/

    PreparedStatement pstmt = conn.prepareStatement("INSERT INTO BlobClob VALUES(40,?,?)");

    File file = new File("blob.txt");
    FileInputStream fis = new FileInputStream(file);
    pstmt.setBinaryStream(1, fis, (int) file.length());

    file = new File("clob.txt");
    fis = new FileInputStream(file);
    pstmt.setAsciiStream(2, fis, (int) file.length());
    fis.close();

    pstmt.execute();

    ResultSet rs = stmt.executeQuery("SELECT * FROM BlobClob WHERE id = 40");
    rs.next();

    java.sql.Blob blob = rs.getBlob(2);
    java.sql.Clob clob = rs.getClob(3);

    byte blobVal[] = new byte[(int) blob.length()];
    InputStream blobIs = blob.getBinaryStream();
    blobIs.read(blobVal);
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bos.write(blobVal);
    blobIs.close();

    char clobVal[] = new char[(int) clob.length()];
    Reader r = clob.getCharacterStream();
    r.read(clobVal);
    StringWriter sw = new StringWriter();
    sw.write(clobVal);

    r.close();
    conn.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();

    Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL", "yourName", "mypwd");

    Statement stmt = conn.createStatement();

    createBlobClobTables(stmt);/*  w  w  w. j  a  v a2 s .c  o m*/

    PreparedStatement pstmt = conn.prepareStatement("INSERT INTO BlobClob VALUES(40,?,?)");

    File file = new File("blob.txt");
    FileInputStream fis = new FileInputStream(file);
    pstmt.setBinaryStream(1, fis, (int) file.length());

    file = new File("clob.txt");
    fis = new FileInputStream(file);
    pstmt.setAsciiStream(2, fis, (int) file.length());
    fis.close();

    pstmt.execute();

    ResultSet rs = stmt.executeQuery("SELECT * FROM BlobClob WHERE id = 40");
    rs.next();

    java.sql.Blob blob = rs.getBlob(2);
    java.sql.Clob clob = rs.getClob("myClobColumn");

    byte blobVal[] = new byte[(int) blob.length()];
    InputStream blobIs = blob.getBinaryStream();
    blobIs.read(blobVal);
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bos.write(blobVal);
    blobIs.close();

    char clobVal[] = new char[(int) clob.length()];
    Reader r = clob.getCharacterStream();
    r.read(clobVal);
    StringWriter sw = new StringWriter();
    sw.write(clobVal);

    r.close();
    conn.close();
}

From source file:de.andrena.tools.macker.plugin.CommandLineFile.java

public static void main(String[] args) throws Exception {
    if (args.length == 0 || args.length > 2) {
        System.err.println("Usage: CommandLineFile <main class> [command line arguments file]");
        System.exit(1);//ww  w  .  ja v a 2 s  .c o m
    }

    String className = args[0];
    Class<?> clazz = Class.forName(className);
    Method main = clazz.getMethod("main", new Class[] { String[].class });

    List<String> lines = new ArrayList<String>();
    if (args.length == 2) {
        Reader in = new InputStreamReader(new FileInputStream(args[1]), "UTF-8");
        try {
            lines = IOUtils.readLines(in);
        } finally {
            in.close();
        }
    }

    try {
        main.invoke(null, new Object[] { lines.toArray(new String[lines.size()]) });
    } catch (InvocationTargetException ex) {
        Throwable cause = ex.getTargetException();
        if (cause instanceof Error) {
            throw (Error) cause;
        }
        throw (Exception) cause;
    }
}

From source file:Main.java

public static void main(String[] args) {

    String s = "tutorial from java2s.com";

    Reader reader = new StringReader(s);

    try {//from   w w w  .j  a  v  a 2s.c om
        // read the first five chars
        for (int i = 0; i < 5; i++) {
            char c = (char) reader.read();
            System.out.println(c);
        }
        reader.close();
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] args) {

    String s = "tutorial from java2s.com";

    Reader reader = new StringReader(s);

    try {//from   w w  w . ja  va 2  s.  c o m
        // read the first five chars
        for (int i = 0; i < 5; i++) {
            char c = (char) reader.read();
            System.out.println(c);
        }
        reader.close();

    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

From source file:com.adobe.aem.demomachine.Updates.java

public static void main(String[] args) {

    String rootFolder = null;//from   w w w .  j  a  v a 2  s  .  c o m

    // Command line options for this tool
    Options options = new Options();
    options.addOption("f", true, "Demo Machine root folder");
    CommandLineParser parser = new BasicParser();
    try {
        CommandLine cmd = parser.parse(options, args);

        if (cmd.hasOption("f")) {
            rootFolder = cmd.getOptionValue("f");
        }

    } catch (Exception e) {
        System.exit(-1);
    }

    Properties md5properties = new Properties();

    try {
        URL url = new URL(
                "https://raw.githubusercontent.com/Adobe-Marketing-Cloud/aem-demo-machine/master/conf/checksums.properties");
        InputStream in = url.openStream();
        Reader reader = new InputStreamReader(in, "UTF-8");
        md5properties.load(reader);
        reader.close();
    } catch (Exception e) {
        System.out.println("Error: Cannot connect to GitHub.com to check for updates");
        System.exit(-1);
    }

    System.out.println(AemDemoConstants.HR);

    int nbUpdateAvailable = 0;

    List<String[]> listPaths = Arrays.asList(AemDemoConstants.demoPaths);
    for (String[] path : listPaths) {
        if (path.length == 5) {
            logger.debug(path[1]);
            File pathFolder = new File(rootFolder + (path[1].length() > 0 ? (File.separator + path[1]) : ""));
            if (pathFolder.exists()) {
                String newMd5 = AemDemoUtils.calcMD5HashForDir(pathFolder, Boolean.parseBoolean(path[3]),
                        false);
                logger.debug("MD5 is: " + newMd5);
                String oldMd5 = md5properties.getProperty("demo.md5." + path[0]);
                if (oldMd5 == null || oldMd5.length() == 0) {
                    logger.error("Cannot find MD5 for " + path[0]);
                    System.out.println(path[2] + " : Cannot find M5 checksum");
                    continue;
                }
                if (newMd5.equals(oldMd5)) {
                    continue;
                } else {
                    System.out.println(path[2] + " : New update available"
                            + (path[0].equals("0") ? " (use 'git pull' to get the latest changes)" : ""));
                    nbUpdateAvailable++;
                }
            } else {
                System.out.println(path[2] + " : Not installed");
            }
        }
    }

    if (nbUpdateAvailable == 0) {
        System.out.println("Your AEM Demo Machine is up to date!");
    }

    System.out.println(AemDemoConstants.HR);

}