Example usage for java.lang System exit

Introduction

In this page you can find the example usage for java.lang System exit.

Prototype

public static void exit(int status)

Source Link

Document

Terminates the currently running Java Virtual Machine.

Usage

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    if (args.length != 2) {
        System.out.println("Usage: java JavaDBDemo <Name> <Address>");
        System.exit(1);
    }/*from w ww  .j  a  v  a 2s .  c o  m*/
    String driver = "org.apache.derby.jdbc.EmbeddedDriver";
    String dbName = "AddressBookDB";
    String connectionURL = "jdbc:derby:" + dbName + ";create=true";
    String createString = "CREATE TABLE ADDRESSBOOKTbl (NAME VARCHAR(32) NOT NULL, ADDRESS VARCHAR(50) NOT NULL)";
    Class.forName(driver);

    conn = DriverManager.getConnection(connectionURL);

    Statement stmt = conn.createStatement();
    stmt.executeUpdate(createString);

    PreparedStatement psInsert = conn.prepareStatement("insert into ADDRESSBOOKTbl values (?,?)");

    psInsert.setString(1, args[0]);
    psInsert.setString(2, args[1]);

    psInsert.executeUpdate();

    Statement stmt2 = conn.createStatement();
    ResultSet rs = stmt2.executeQuery("select * from ADDRESSBOOKTbl");
    System.out.println("Addressed present in your Address Book\n\n");
    int num = 0;

    while (rs.next()) {
        System.out.println(++num + ": Name: " + rs.getString(1) + "\n Address" + rs.getString(2));
    }
    rs.close();
}

From source file:MainClass.java

public static void main(String[] args) {
    if (args.length != 2) {
        String err = "Usage: KeyGeneratorApp algorithmName keySize";
        System.out.println(err);/*from www.j  a va 2s  .c  o m*/
        System.exit(0);
    }
    int keySize = (new Integer(args[1])).intValue();
    SecretKey skey = null;
    KeyPair keys = null;
    String algorithm = args[0];

    try {
        KeyPairGenerator kpg = KeyPairGenerator.getInstance(algorithm);
        kpg.initialize(keySize);
        keys = kpg.genKeyPair();
    } catch (NoSuchAlgorithmException ex1) {
        try {
            KeyGenerator kg = KeyGenerator.getInstance(algorithm);
            kg.init(keySize);
            skey = kg.generateKey();
        } catch (NoSuchAlgorithmException ex2) {
            System.out.println("Algorithm not supported: " + algorithm);
            System.exit(0);

        }
    }
}

From source file:Main.java

public static void main(String[] a) {
    JDialog f = new JDialog();
    f.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
            System.exit(0);
        }/*from w w w.j a v a  2s  .c  o  m*/
    });

    JButton btOK = new JButton("Press Enter to click me, I am the default.");
    btOK.setToolTipText("Save and exit");
    f.getRootPane().setDefaultButton(btOK);

    JPanel p = new JPanel();
    p.add(btOK);
    p.add(new JButton("I am NOT the default."));
    f.getContentPane().add(p);

    f.pack();
    f.setSize(new Dimension(300, 200));

    f.setVisible(true);

}

From source file:MainClass.java

public static void main(String[] a) {
    File aFile = new File("charData.txt");
    FileInputStream inFile = null;
    try {// w  w  w .  j  a  v  a2  s  .  c  om
        inFile = new FileInputStream(aFile);
    } catch (FileNotFoundException e) {
        e.printStackTrace(System.err);
        System.exit(1);
    }
    FileChannel inChannel = inFile.getChannel();
}

From source file:AuthorizedFileWriter.java

public static void main(String[] args) {
    System.setSecurityManager(new SecurityManager());
    String file = "authorized.txt";
    String fileBody = "test";
    try {// w w w  . j  a va 2  s .  c o m
        FileWriter fileWriter = new FileWriter(file);
        fileWriter.write(fileBody);
        fileWriter.close();
        System.exit(0);
    } catch (IOException ioException) {
        ioException.printStackTrace();
        System.exit(1);
    }
}

From source file:MainClass.java

public static void main(String args[]) {
    Scanner conin = new Scanner(System.in);

    int count = 0;

    System.out.println("Enter numbers to average.");

    while (conin.hasNext()) {
        if (conin.hasNextDouble()) {
            System.out.println(conin.nextDouble());
            count++;//from w ww.j  a  v a  2  s .co m
        }
        if (count == 3) {
            System.exit(0);

        }
    }

}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    FileInputStream fis = new FileInputStream("test");
    ObjectInputStream ois = new ObjectInputStream(fis);
    Object o = ois.readObject();//from w  w w  .  jav  a  2  s  .  co m
    if (!(o instanceof String)) {
        System.out.println("Unexpected data in file");
        System.exit(-1);
    }
    String data = (String) o;
    System.out.println("Got message " + data);
    o = ois.readObject();
    if (!(o instanceof byte[])) {
        System.out.println("Unexpected data in file");
        System.exit(-1);
    }
    byte origDigest[] = (byte[]) o;
    MessageDigest md = MessageDigest.getInstance("SHA");
    md.update(data.getBytes());
    if (MessageDigest.isEqual(md.digest(), origDigest))
        System.out.println("Message is valid");
    else
        System.out.println("Message was corrupted");
}

From source file:Main.java

public static void main(String[] args) {
    JFrame frame = new JFrame("JFrame");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();

    // Add a close button
    JButton closeButton = new JButton("Close");
    contentPane.add(closeButton);/*from  w  w  w . ja va2 s. c  o  m*/

    closeButton.addActionListener(e -> System.exit(0));

    frame.pack();
    frame.setVisible(true);
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    FileInputStream fis = new FileInputStream("test");
    ObjectInputStream ois = new ObjectInputStream(fis);
    Object o = ois.readObject();/*from  w  ww .j a  va2s .co  m*/
    if (!(o instanceof String)) {
        System.out.println("Unexpected data in file");
        System.exit(-1);
    }
    String data = (String) o;
    System.out.println("Got message " + data);
    o = ois.readObject();
    if (!(o instanceof byte[])) {
        System.out.println("Unexpected data in file");
        System.exit(-1);
    }
    byte origDigest[] = (byte[]) o;
    byte pass[] = "aaa".getBytes();
    byte buf[] = data.getBytes();
    MessageDigest md = MessageDigest.getInstance("SHA");
    md.update(pass);
    md.update(buf);
    byte digest1[] = md.digest();
    md.update(pass);
    md.update(digest1);
    System.out.println(MessageDigest.isEqual(md.digest(), origDigest));
}

From source file:MainClass.java

public static void main(String args[]) {

    String phrase = "a word word";
    String duplicatePattern = "\\b(\\w+) \\1\\b";

    Pattern p = null;/*from w  w  w  .j  a  v  a2 s .  c om*/
    try {
        p = Pattern.compile(duplicatePattern);
    } catch (PatternSyntaxException pex) {
        pex.printStackTrace();
        System.exit(0);
    }
    // count the number of matches.
    int matches = 0;

    // get the matcher
    Matcher m = p.matcher(phrase);
    String val = null;

    // find all matching Strings
    while (m.find()) {
        val = ":" + m.group() + ":";
        System.out.println(val);
        matches++;
    }
}