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:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
    byte[] input = "www.java2s.com".getBytes();
    byte[] keyBytes = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
            0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 };
    byte[] ivBytes = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x00, 0x01, 0x02, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x01 };//from  w ww . ja  v  a  2  s. c om

    SecretKeySpec key = new SecretKeySpec(keyBytes, "AES");
    IvParameterSpec ivSpec = new IvParameterSpec(ivBytes);
    Cipher cipher = Cipher.getInstance("AES/CTR/NoPadding", "BC");
    System.out.println("input : " + new String(input));

    // encryption pass
    cipher.init(Cipher.ENCRYPT_MODE, key, ivSpec);
    ByteArrayInputStream bIn = new ByteArrayInputStream(input);
    CipherInputStream cIn = new CipherInputStream(bIn, cipher);
    ByteArrayOutputStream bOut = new ByteArrayOutputStream();

    int ch;
    while ((ch = cIn.read()) >= 0) {
        bOut.write(ch);
    }

    byte[] cipherText = bOut.toByteArray();

    System.out.println("cipher: " + new String(cipherText));

    // decryption pass
    cipher.init(Cipher.DECRYPT_MODE, key, ivSpec);
    bOut = new ByteArrayOutputStream();
    CipherOutputStream cOut = new CipherOutputStream(bOut, cipher);
    cOut.write(cipherText);
    cOut.close();
    System.out.println("plain : " + new String(bOut.toByteArray()));
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Document document = new Document(PageSize.A6);
    PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
    document.open();//from ww w .j a v a 2  s .  com
    document.add(new Paragraph("Hello World"));
    document.add(new Paragraph("Hello People"));
    document.close();

    PdfReader reader = new PdfReader("2.pdf");
    PdfDictionary page = reader.getPageN(1);
    PRIndirectReference objectReference = (PRIndirectReference) page.get(PdfName.CONTENTS);
    PRStream stream = (PRStream) PdfReader.getPdfObject(objectReference);
    byte[] streamBytes = PdfReader.getStreamBytes(stream);
    String contentStream = new String(streamBytes);
    System.out.println(contentStream);
    PRTokeniser tokenizer = new PRTokeniser(streamBytes);
    while (tokenizer.nextToken()) {
        if (tokenizer.getTokenType() == PRTokeniser.TK_STRING) {
            System.out.println(tokenizer.getStringValue());
        }
    }
    StringBuffer buf = new StringBuffer();
    int pos = contentStream.indexOf("Hello World") + 11;
    buf.append(contentStream.substring(0, pos));
    buf.append("Hello");
    buf.append(contentStream.substring(pos));
    String hackedContentStream = buf.toString();
    document = new Document(PageSize.A6);
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("HelloWorldStreamHacked.pdf"));
    document.open();
    PdfContentByte cb = writer.getDirectContent();
    cb.setLiteral(hackedContentStream);
    document.close();
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    byte[] input = new byte[] { (byte) 0xbe, (byte) 0xef };
    Cipher cipher = Cipher.getInstance("RSA/None/NoPadding", "BC");

    KeyFactory keyFactory = KeyFactory.getInstance("RSA", "BC");
    RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(new BigInteger("12345678", 16),
            new BigInteger("11", 16));
    RSAPrivateKeySpec privKeySpec = new RSAPrivateKeySpec(new BigInteger("12345678", 16),
            new BigInteger("12345678", 16));

    RSAPublicKey pubKey = (RSAPublicKey) keyFactory.generatePublic(pubKeySpec);
    RSAPrivateKey privKey = (RSAPrivateKey) keyFactory.generatePrivate(privKeySpec);

    cipher.init(Cipher.ENCRYPT_MODE, pubKey);

    byte[] cipherText = cipher.doFinal(input);
    System.out.println("cipher: " + new String(cipherText));

    cipher.init(Cipher.DECRYPT_MODE, privKey);
    byte[] plainText = cipher.doFinal(cipherText);
    System.out.println("plain : " + new String(plainText));
}

From source file:com.manning.blogapps.chapter10.examples.AuthDelete.java

public static void main(String[] args) throws Exception {
    if (args.length < 3) {
        System.out.println("USAGE: authdelete <username> <password> <url>");
        System.exit(-1);/*  w ww  .  jav a  2 s. c o m*/
    }
    String credentials = args[0] + ":" + args[1];
    String url = args[2];

    HttpClient httpClient = new HttpClient();
    DeleteMethod method = new DeleteMethod(url);
    method.setRequestHeader("Authorization",
            "Basic " + new String(Base64.encodeBase64(credentials.getBytes())));

    httpClient.executeMethod(method);
    System.out.println("Server returned status code: ");
}

From source file:europarl.Main.java

public static void main(String[] args) {

    //GLOBAL OPTIONS
    String target_word = new String("plane");
    for (String arg : args) {
        if (arg.startsWith("-")) {
        } else {/*w ww  .  jav  a2 s.  c  om*/
            target_word = arg;
        }
    }
    if (!Cfg.load_config("config/configuration.properties"))
        return;

    WordAlignment align = new WordAlignment();

    long startTime = System.currentTimeMillis();
    align.setStemmer(new SnowballStemmer("english"));
    align.getFromGz("data/it-en.A3.final.gz", target_word, -1);
    long endTime = System.currentTimeMillis();
    Main.log.info("Read in " + (endTime - startTime) / 1000.0 + " seconds");
    align.print();
    startTime = System.currentTimeMillis();
    endTime = System.currentTimeMillis();
    Main.log.info("Converted n " + (endTime - startTime) / 1000.0 + " seconds");

    align.saveToArff("./data/dataset_" + target_word + ".arff");
    return;
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    //Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    DHParameterSpec dhParams = new DHParameterSpec(p512, g512);
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DH", "BC");

    keyGen.initialize(dhParams, new SecureRandom());

    KeyAgreement aKeyAgree = KeyAgreement.getInstance("DH", "BC");
    KeyPair aPair = keyGen.generateKeyPair();
    KeyAgreement bKeyAgree = KeyAgreement.getInstance("DH", "BC");
    KeyPair bPair = keyGen.generateKeyPair();

    aKeyAgree.init(aPair.getPrivate());//ww  w  .  j  a  v a2s.  com
    bKeyAgree.init(bPair.getPrivate());

    aKeyAgree.doPhase(bPair.getPublic(), true);
    bKeyAgree.doPhase(aPair.getPublic(), true);

    MessageDigest hash = MessageDigest.getInstance("SHA1", "BC");
    System.out.println(new String(hash.digest(aKeyAgree.generateSecret())));
    System.out.println(new String(hash.digest(bKeyAgree.generateSecret())));
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    DHParameterSpec dhParams = new DHParameterSpec(p512, g512);
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DH", "BC");

    keyGen.initialize(dhParams, new SecureRandom());

    KeyAgreement aKeyAgree = KeyAgreement.getInstance("DH", "BC");
    KeyPair aPair = keyGen.generateKeyPair();
    KeyAgreement bKeyAgree = KeyAgreement.getInstance("DH", "BC");
    KeyPair bPair = keyGen.generateKeyPair();

    aKeyAgree.init(aPair.getPrivate());/* w w  w. ja  v  a2 s.  com*/
    bKeyAgree.init(bPair.getPrivate());

    aKeyAgree.doPhase(bPair.getPublic(), true);
    bKeyAgree.doPhase(aPair.getPublic(), true);

    MessageDigest hash = MessageDigest.getInstance("SHA1", "BC");
    System.out.println(new String(hash.digest(aKeyAgree.generateSecret())));
    System.out.println(new String(hash.digest(bKeyAgree.generateSecret())));
}

From source file:com.manning.blogapps.chapter10.examples.AuthGetJava.java

public static void main(String[] args) throws Exception {
    if (args.length < 3) {
        System.out.println("USAGE: authget <username> <password> <url>");
        System.exit(-1);//from w  w w . ja v  a 2s . com
    }
    String credentials = args[0] + ":" + args[1];

    URL url = new URL(args[2]);
    URLConnection conn = url.openConnection();

    conn.setRequestProperty("Authorization",
            "Basic " + new String(Base64.encodeBase64(credentials.getBytes())));

    BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));

    String s = null;
    while ((s = in.readLine()) != null) {
        System.out.println(s);
    }
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    byte[] input = "input".getBytes();
    byte[] keyBytes = new byte[] { 0x01, 0x23, 0x45, 0x67, (byte) 0x89, (byte) 0xab, (byte) 0xcd, (byte) 0xef };
    byte[] ivBytes = new byte[] { 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00 };

    SecretKeySpec key = new SecretKeySpec(keyBytes, "DES");
    IvParameterSpec ivSpec = new IvParameterSpec(ivBytes);
    Cipher cipher = Cipher.getInstance("DES/CBC/PKCS7Padding", "BC");

    cipher.init(Cipher.ENCRYPT_MODE, key, ivSpec);

    byte[] cipherText = new byte[cipher.getOutputSize(input.length)];

    int ctLength = cipher.update(input, 0, input.length, cipherText, 0);

    ctLength += cipher.doFinal(cipherText, ctLength);

    cipher.init(Cipher.DECRYPT_MODE, key, ivSpec);

    byte[] plainText = new byte[cipher.getOutputSize(ctLength)];

    int ptLength = cipher.update(cipherText, 0, ctLength, plainText, 0);

    ptLength += cipher.doFinal(plainText, ptLength);

    System.out.println("plain : " + new String(plainText));

}

From source file:com.manning.blogapps.chapter10.examples.AuthGet.java

public static void main(String[] args) throws Exception {
    if (args.length < 3) {
        System.out.println("USAGE: authget <username> <password> <url>");
        System.exit(-1);/*from  www . jav  a 2s .  c o  m*/
    }
    String credentials = args[0] + ":" + args[1];
    String url = args[2];

    HttpClient httpClient = new HttpClient();
    GetMethod method = new GetMethod(url);
    method.setRequestHeader("Authorization",
            "Basic " + new String(Base64.encodeBase64(credentials.getBytes())));

    httpClient.executeMethod(method);
    System.out.println(method.getResponseBodyAsString());
}