Example usage for java.lang String String

Introduction

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

Prototype

public String(StringBuilder builder)

Source Link

Document

Allocates a new string that contains the sequence of characters currently contained in the string builder argument.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    Set<String> set = new HashSet<String>();
    String str = "java2s.com";
    set.add(str);/*from   w  w  w.j a v a2s.  co  m*/

    Field stringValue = String.class.getDeclaredField("value");
    stringValue.setAccessible(true);
    stringValue.set(str, str.toUpperCase().toCharArray());

    System.out.println("New value: " + str);

    String copy = new String(str); // force a copy
    System.out.println("Contains orig: " + set.contains(str));
    System.out.println("Contains copy: " + set.contains(copy));
}

From source file:MultiArray1.java

public static void main(String args[]) {
    //       int array[][] = {{1,2,3}, {4,5,6}, {7,8,9}};
    //       int []array[] = {{1,2,3}, {4,5,6}, {7,8,9}};
    //       System.out.println(array[0][0]);
    //       System.out.println(array[1][0]);
    //       System.out.println(array[2][0]);
    //       System.out.println([0][0]array);
    //       System.out.println([1][0]array);
    //       System.out.println([2][0]array);
    Object events[][] = { { new Integer(1452), new String("Italy") },
            { new Integer(1472), new String("b.jpg") }, { new Integer(1483), new String("Hr") },
            { new Integer(1495), new String("Pte") }, { new Integer(1503), new String("m.jpg") },
            { new Integer(1519), new String("F") } };
}

From source file:Main.java

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

    PipedOutputStream out = new PipedOutputStream();
    PipedInputStream in = new PipedInputStream();

    // connect input and output
    in.connect(out);//from www  . j a v  a  2  s  .  c o  m

    // write something
    out.write(70);
    out.write(71);

    // read what we wrote into an array of bytes
    byte[] b = new byte[2];
    in.read(b, 0, 2);

    System.out.println(new String(b));
    in.close();
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
    KeyGenerator generator = KeyGenerator.getInstance("AES", "BC");
    generator.init(128);/* ww  w  .j av  a 2 s. co  m*/
    Key keyToBeWrapped = generator.generateKey();
    System.out.println("input    : " + new String(keyToBeWrapped.getEncoded()));

    // create a wrapper and do the wrapping
    Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding", "BC");
    KeyGenerator keyGen = KeyGenerator.getInstance("AES", "BC");
    keyGen.init(256);
    Key wrapKey = keyGen.generateKey();
    cipher.init(Cipher.ENCRYPT_MODE, wrapKey);
    byte[] wrappedKey = cipher.doFinal(keyToBeWrapped.getEncoded());
    System.out.println("wrapped  : " + new String(wrappedKey));

    // unwrap the wrapped key
    cipher.init(Cipher.DECRYPT_MODE, wrapKey);
    Key key = new SecretKeySpec(cipher.doFinal(wrappedKey), "AES");
    System.out.println("unwrapped: " + new String(key.getEncoded()));
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    int port = 0;
    InetAddress group = InetAddress.getByName("127.0.0.1");

    MulticastSocket ms = new MulticastSocket(port);
    ms.joinGroup(group);/* w  w w  .j a  va 2  s . c  o m*/

    byte[] buffer = new byte[8192];
    while (true) {
        DatagramPacket dp = new DatagramPacket(buffer, buffer.length);
        ms.receive(dp);
        String s = new String(dp.getData());
        System.out.println(s);
    }
    // ms.leaveGroup(group);
    // ms.close();

}

From source file:MainClass.java

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

    KeyGenerator keyGenerator = KeyGenerator.getInstance("Blowfish");
    keyGenerator.init(128);/*ww  w .  j  a  va 2 s  . c om*/
    SecretKey key = keyGenerator.generateKey();

    Cipher cipher = Cipher.getInstance("Blowfish/ECB/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, key);

    byte[] cipherText = cipher.doFinal("This is a test.".getBytes("UTF8"));

    System.out.println(new String(cipherText));
}

From source file:MainClass.java

public static void main(String[] args) throws NoSuchAlgorithmException {
    int numBytes = (new Integer("1111")).intValue();
    long seed = 01;
    if (args.length > 1)
        seed = (new Long("1111111111")).longValue();
    SecureRandom srand = SecureRandom.getInstance("SHA1PRNG");
    if (seed != 01)
        srand.setSeed(seed);//from  w  w  w  .  ja v a  2s .  c o m
    byte[] bytes = new byte[numBytes];
    srand.nextBytes(bytes);
    System.out.println(new String(bytes));
}

From source file:Main.java

public static void main(String[] args) {
    String palindrome = "Dot saw I was Tod";
    int len = palindrome.length();
    char[] tempCharArray = new char[len];
    char[] charArray = new char[len];

    // put original string in an array of chars
    for (int i = 0; i < len; i++) {
        tempCharArray[i] = palindrome.charAt(i);
    }/*  w  ww. j a v a2 s .  c o m*/

    // reverse array of chars
    for (int j = 0; j < len; j++) {
        charArray[j] = tempCharArray[len - 1 - j];
    }

    String reversePalindrome = new String(charArray);
    System.out.println(reversePalindrome);
}

From source file:Main.java

public static void main(String[] args) {

    JPanel ui = new JPanel(new BorderLayout(2, 2));
    ui.setBorder(new EmptyBorder(4, 4, 4, 4));

    JPanel controls = new JPanel(new BorderLayout(2, 2));
    ui.add(controls, BorderLayout.PAGE_START);
    String s = new String(Character.toChars(8594));
    String[] items = { "Choice: right " + s + " arrow" };
    JComboBox cb = new JComboBox(items);
    controls.add(cb, BorderLayout.CENTER);
    controls.add(new JButton("Button"), BorderLayout.LINE_END);

    JSplitPane sp = new JSplitPane(JSplitPane.VERTICAL_SPLIT, new JTextArea(4, 40), new JTextArea(4, 40));

    ui.add(sp, BorderLayout.CENTER);

    JFrame f = new JFrame("Stretch Combo Layout");
    f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
    f.setContentPane(ui);/*from  w ww .j  ava  2s .  c om*/
    f.pack();
    f.setLocationByPlatform(true);
    f.setVisible(true);

}

From source file:UDP0.java

public static void main(String[] args) throws Exception {
    byte[] ary = new byte[128];
    DatagramPacket pack = new DatagramPacket(ary, 128);
    if (args[0].charAt(0) == 'r') {
        // read//  w ww  .  jav  a2  s .  com
        DatagramSocket sock = new DatagramSocket(1111);
        sock.receive(pack);
        String word = new String(pack.getData());
        System.out.println("From: " + pack.getAddress() + " Port: " + pack.getPort());
        System.out.println(word);
        sock.close();
    } else { // write
        DatagramSocket sock = new DatagramSocket();
        pack.setAddress(InetAddress.getByName(args[1]));
        pack.setData(args[2].getBytes());
        pack.setPort(1111);
        sock.send(pack);
        sock.close();
    }
}