Example usage for java.lang String toCharArray

List of usage examples for java.lang String toCharArray

  1. HOME
  2. Java
  3. java
  4. java.lang.*
  5. String
  6. toCharArray

Introduction

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

Prototype

public char[] toCharArray()

Source Link

Document

Converts this string to a new character array.

Usage

From source file:mitm.common.security.ca.handlers.ejbca.ws.EjbcaWSClient.java

public static void main(String args[]) throws Exception {
    BasicConfigurator.configure();/*  www.j av  a  2 s.c  o  m*/

    JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();

    factory.setServiceClass(EjbcaWS.class);
    factory.setAddress("https://192.168.178.113:8443/ejbca/ejbcaws/ejbcaws");
    factory.setServiceName(SERVICE_NAME);

    EjbcaWS client = (EjbcaWS) factory.create();

    Client proxy = ClientProxy.getClient(client);
    HTTPConduit conduit = (HTTPConduit) proxy.getConduit();
    TLSClientParameters tlsClientParameters = new TLSClientParameters();

    KeyManagerFactory keyManagerFactory = KeyManagerFactory
            .getInstance(KeyManagerFactory.getDefaultAlgorithm());

    java.security.KeyStore keyStore = java.security.KeyStore.getInstance("PKCS12");
    InputStream keyInput = new FileInputStream("/home/martijn/temp/superadmin.p12");

    String password = "ejbca";

    keyStore.load(keyInput, password.toCharArray());
    keyInput.close();
    keyManagerFactory.init(keyStore, password.toCharArray());

    KeyManager[] keyManagers = keyManagerFactory.getKeyManagers();

    tlsClientParameters.setDisableCNCheck(true);

    tlsClientParameters.setKeyManagers(keyManagers);

    X509TrustManager trustAll = new X509TrustManager() {
        @Override
        public void checkClientTrusted(X509Certificate[] paramArrayOfX509Certificate, String paramString)
                throws CertificateException {
        }

        @Override
        public void checkServerTrusted(X509Certificate[] paramArrayOfX509Certificate, String paramString)
                throws CertificateException {
        }

        @Override
        public X509Certificate[] getAcceptedIssuers() {
            return null;
        }
    };

    TrustManagerFactory trustManagerFactory = TrustManagerFactory
            .getInstance(TrustManagerFactory.getDefaultAlgorithm());

    trustManagerFactory.init(new KeyStoreLoader().loadKeyStore(new File("/home/martijn/temp/truststore.jks"),
            "changeit".toCharArray()));

    tlsClientParameters.setTrustManagers(new TrustManager[] { trustAll });
    //tlsClientParameters.setTrustManagers(trustManagerFactory.getTrustManagers());

    conduit.setTlsClientParameters(tlsClientParameters);

    System.out.println(client.getEjbcaVersion());

    UserDataVOWS userData = new UserDataVOWS();

    userData.setEmail("test@example.com");
    userData.setUsername("test@example.com");
    //userData.setPassword("test@example.com");
    userData.setSubjectDN("CN=test@example.com");
    userData.setSubjectAltName("rfc822Name=test@example.com");
    userData.setEndEntityProfileName("test");
    userData.setCaName("AdminCA1");
    userData.setCertificateProfileName("ENDUSER");
    userData.setStatus(EJBCAConst.STATUS_NEW);
    userData.setTokenType(EJBCAConst.TOKEN_TYPE_USERGENERATED);

    try {
        //client.editUser(userData);

        SecurityFactory securityFactory = SecurityFactoryFactory.getSecurityFactory();

        SecureRandom randomSource = securityFactory.createSecureRandom();

        KeyPairGenerator keyPairGenerator = securityFactory.createKeyPairGenerator("RSA");

        keyPairGenerator.initialize(2048, randomSource);

        KeyPair keyPair = keyPairGenerator.generateKeyPair();

        X500PrincipalBuilder builder = new X500PrincipalBuilder();

        builder.setCommonName("john doe");
        builder.setEmail("test@example.com");

        PKCS10CertificationRequestBuilder requestBuilder = new PKCS10CertificationRequestBuilder(
                X500PrincipalUtils.toX500Name(builder.buildPrincipal()),
                SubjectPublicKeyInfo.getInstance(keyPair.getPublic().getEncoded()));

        PKCS10CertificationRequest pkcs10 = requestBuilder
                .build(getContentSigner("SHA1WithRSA", keyPair.getPrivate()));

        String base64PKCS10 = Base64Utils.encode(pkcs10.getEncoded());

        CertificateResponse certificateResponse = client.certificateRequest(userData, base64PKCS10,
                EJBCAConst.CERT_REQ_TYPE_PKCS10, null, EJBCAConst.RESPONSETYPE_CERTIFICATE);

        if (certificateResponse != null && certificateResponse.getData() != null) {
            /*
             * The result is a base64 encoded certificate 
             */
            Collection<X509Certificate> certificates = CertificateUtils.readX509Certificates(
                    new ByteArrayInputStream(Base64.decode(certificateResponse.getData())));

            if (CollectionUtils.isNotEmpty(certificates)) {
                for (X509Certificate certificate : certificates) {
                    System.out.println(certificate);
                }
            } else {
                System.out.println("No certificates found");
            }
        } else {
            System.out.println("certificateResponse is empty");
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:test1.ApacheHttpRestClient2.java

public final static void main(String[] args) {

    HttpClient httpClient = new DefaultHttpClient();
    try {/*  www  .  j av  a2 s . c o m*/
        // this ona api call returns results in a JSON format
        HttpGet httpGetRequest = new HttpGet("https://api.ona.io/api/v1/users");

        // Execute HTTP request
        HttpResponse httpResponse = httpClient.execute(httpGetRequest);

        System.out.println("------------------HTTP RESPONSE----------------------");
        System.out.println(httpResponse.getStatusLine());
        System.out.println("------------------HTTP RESPONSE----------------------");

        // Get hold of the response entity
        HttpEntity entity = httpResponse.getEntity();

        // If the response does not enclose an entity, there is no need
        // to bother about connection release
        byte[] buffer = new byte[1024];
        if (entity != null) {
            InputStream inputStream = entity.getContent();
            try {
                int bytesRead = 0;
                BufferedInputStream bis = new BufferedInputStream(inputStream);
                while ((bytesRead = bis.read(buffer)) != -1) {
                    String chunk = new String(buffer, 0, bytesRead);
                    FileWriter file = new FileWriter("C:\\Users\\fred\\Desktop\\webicons\\output.txt");
                    //file.write(chunk.toJSONString());
                    file.write(chunk.toCharArray());
                    file.flush();
                    file.close();

                    System.out.print(chunk);
                    System.out.println(chunk);
                }
            } catch (IOException ioException) {
                // In case of an IOException the connection will be released
                // back to the connection manager automatically
                ioException.printStackTrace();
            } catch (RuntimeException runtimeException) {
                // In case of an unexpected exception you may want to abort
                // the HTTP request in order to shut down the underlying
                // connection immediately.
                httpGetRequest.abort();
                runtimeException.printStackTrace();
            }
            //          try {
            //              FileWriter file = new FileWriter("C:\\Users\\fred\\Desktop\\webicons\\output.json");
            //                file.write(bis.toJSONString());
            //                file.flush();
            //                file.close();
            //
            //                System.out.print(bis);
            //          } catch (Exception e) {
            //          }

            finally {
                // Closing the input stream will trigger connection release
                try {
                    inputStream.close();
                } catch (Exception ignore) {
                }
            }
        }
    } catch (ClientProtocolException e) {
        // thrown by httpClient.execute(httpGetRequest)
        e.printStackTrace();
    } catch (IOException e) {
        // thrown by entity.getContent();
        e.printStackTrace();
    } finally {
        // When HttpClient instance is no longer needed,
        // shut down the connection manager to ensure
        // immediate deallocation of all system resources
        httpClient.getConnectionManager().shutdown();
    }
}

From source file:com.threerings.getdown.tools.AppletParamSigner.java

public static void main(String[] args) {
    try {/*from  w w  w .  j a v a  2s . c  om*/
        if (args.length != 7) {
            System.err
                    .println("AppletParamSigner keystore storepass alias keypass " + "appbase appname imgpath");
            System.exit(255);
        }

        String keystore = args[0];
        String storepass = args[1];
        String alias = args[2];
        String keypass = args[3];
        String appbase = args[4];
        String appname = args[5];
        String imgpath = args[6];
        String params = appbase + appname + imgpath;

        KeyStore store = KeyStore.getInstance("JKS");
        store.load(new BufferedInputStream(new FileInputStream(keystore)), storepass.toCharArray());
        PrivateKey key = (PrivateKey) store.getKey(alias, keypass.toCharArray());
        Signature sig = Signature.getInstance("SHA1withRSA");
        sig.initSign(key);
        sig.update(params.getBytes());
        String signed = new String(Base64.encodeBase64(sig.sign()));
        System.out.println("<param name=\"appbase\" value=\"" + appbase + "\" />");
        System.out.println("<param name=\"appname\" value=\"" + appname + "\" />");
        System.out.println("<param name=\"bgimage\" value=\"" + imgpath + "\" />");
        System.out.println("<param name=\"signature\" value=\"" + signed + "\" />");

    } catch (Exception e) {
        System.err.println("Failed to produce signature.");
        e.printStackTrace();
    }
}

From source file:net.sf.jsignpdf.InstallCert.java

/**
 * The main - whole logic of Install Cert Tool.
 * /*from ww  w.  j av a 2  s .  c o  m*/
 * @param args
 * @throws Exception
 */
public static void main(String[] args) {
    String host;
    int port;
    char[] passphrase;

    System.out.println("InstallCert - Install CA certificate to Java Keystore");
    System.out.println("=====================================================");

    final BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

    try {
        if ((args.length == 1) || (args.length == 2)) {
            String[] c = args[0].split(":");
            host = c[0];
            port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
            String p = (args.length == 1) ? "changeit" : args[1];
            passphrase = p.toCharArray();
        } else {
            String tmpStr;
            do {
                System.out.print("Enter hostname or IP address: ");
                tmpStr = StringUtils.defaultIfEmpty(reader.readLine(), null);
            } while (tmpStr == null);
            host = tmpStr;
            System.out.print("Enter port number [443]: ");
            tmpStr = StringUtils.defaultIfEmpty(reader.readLine(), null);
            port = tmpStr == null ? 443 : Integer.parseInt(tmpStr);
            System.out.print("Enter keystore password [changeit]: ");
            tmpStr = reader.readLine();
            String p = "".equals(tmpStr) ? "changeit" : tmpStr;
            passphrase = p.toCharArray();
        }

        char SEP = File.separatorChar;
        final File dir = new File(System.getProperty("java.home") + SEP + "lib" + SEP + "security");
        final File file = new File(dir, "cacerts");

        System.out.println("Loading KeyStore " + file + "...");
        InputStream in = new FileInputStream(file);
        KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
        ks.load(in, passphrase);
        in.close();

        SSLContext context = SSLContext.getInstance("TLS");
        TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        tmf.init(ks);
        X509TrustManager defaultTrustManager = (X509TrustManager) tmf.getTrustManagers()[0];
        SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
        context.init(null, new TrustManager[] { tm }, null);
        SSLSocketFactory factory = context.getSocketFactory();

        System.out.println("Opening connection to " + host + ":" + port + "...");
        SSLSocket socket = (SSLSocket) factory.createSocket(host, port);
        socket.setSoTimeout(10000);
        try {
            System.out.println("Starting SSL handshake...");
            socket.startHandshake();
            socket.close();
            System.out.println();
            System.out.println("No errors, certificate is already trusted");
        } catch (SSLException e) {
            System.out.println();
            System.out.println("Certificate is not yet trusted.");
            //        e.printStackTrace(System.out);
        }

        X509Certificate[] chain = tm.chain;
        if (chain == null) {
            System.out.println("Could not obtain server certificate chain");
            return;
        }

        System.out.println();
        System.out.println("Server sent " + chain.length + " certificate(s):");
        System.out.println();
        MessageDigest sha1 = MessageDigest.getInstance("SHA1");
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        for (int i = 0; i < chain.length; i++) {
            X509Certificate cert = chain[i];
            System.out.println(" " + (i + 1) + " Subject " + cert.getSubjectDN());
            System.out.println("   Issuer  " + cert.getIssuerDN());
            sha1.update(cert.getEncoded());
            System.out.println("   sha1    " + toHexString(sha1.digest()));
            md5.update(cert.getEncoded());
            System.out.println("   md5     " + toHexString(md5.digest()));
            System.out.println();
        }

        System.out.print("Enter certificate to add to trusted keystore or 'q' to quit [1]: ");
        String line = reader.readLine().trim();
        int k = -1;
        try {
            k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
        } catch (NumberFormatException e) {
        }

        if (k < 0 || k >= chain.length) {
            System.out.println("KeyStore not changed");
        } else {
            try {
                System.out.println("Creating keystore backup");
                final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
                final File backupFile = new File(dir,
                        CACERTS_KEYSTORE + "." + dateFormat.format(new java.util.Date()));
                final FileInputStream fis = new FileInputStream(file);
                final FileOutputStream fos = new FileOutputStream(backupFile);
                IOUtils.copy(fis, fos);
                fis.close();
                fos.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
            System.out.println("Installing certificate...");

            X509Certificate cert = chain[k];
            String alias = host + "-" + (k + 1);
            ks.setCertificateEntry(alias, cert);

            OutputStream out = new FileOutputStream(file);
            ks.store(out, passphrase);
            out.close();

            System.out.println();
            System.out.println(cert);
            System.out.println();
            System.out.println("Added certificate to keystore '" + file + "' using alias '" + alias + "'");
        }
    } catch (Exception e) {
        System.out.println();
        System.out.println("----------------------------------------------");
        System.out.println("Problem occured during installing certificate:");
        e.printStackTrace();
        System.out.println("----------------------------------------------");
    }
    System.out.println("Press Enter to finish...");
    try {
        reader.readLine();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

From source file:TwitterClustering.java

public static void main(String[] args) throws FileNotFoundException, IOException {
    // TODO code application logic here

    File outFile = new File(args[3]);
    Scanner s = new Scanner(new File(args[1])).useDelimiter(",");
    JSONParser parser = new JSONParser();
    Set<Cluster> clusterSet = new HashSet<Cluster>();
    HashMap<String, Tweet> tweets = new HashMap();
    FileWriter fw = new FileWriter(outFile.getAbsoluteFile());
    BufferedWriter bw = new BufferedWriter(fw);

    // init/*  ww  w .j a  v  a  2s . c om*/
    try {

        Object obj = parser.parse(new FileReader(args[2]));

        JSONArray jsonArray = (JSONArray) obj;

        for (int i = 0; i < jsonArray.size(); i++) {

            Tweet twt = new Tweet();
            JSONObject jObj = (JSONObject) jsonArray.get(i);
            String text = jObj.get("text").toString();

            long sum = 0;
            for (int y = 0; y < text.toCharArray().length; y++) {

                sum += (int) text.toCharArray()[y];
            }

            String[] token = text.split(" ");
            String tID = jObj.get("id").toString();

            Set<String> mySet = new HashSet<String>(Arrays.asList(token));
            twt.setAttributeValue(sum);
            twt.setText(mySet);
            twt.setTweetID(tID);
            tweets.put(tID, twt);

        }

        // preparing initial clusters
        int i = 0;
        while (s.hasNext()) {
            String id = s.next();// id
            Tweet t = tweets.get(id.trim());
            clusterSet.add(new Cluster(i + 1, t, new LinkedList()));
            i++;
        }

        Iterator it = tweets.entrySet().iterator();

        for (int l = 0; l < 2; l++) { // limit to 25 iterations

            while (it.hasNext()) {
                Map.Entry me = (Map.Entry) it.next();

                // calculate distance to each centroid
                Tweet p = (Tweet) me.getValue();
                HashMap<Cluster, Float> distMap = new HashMap();

                for (Cluster clust : clusterSet) {

                    distMap.put(clust, jaccardDistance(p.getText(), clust.getCentroid().getText()));
                }

                HashMap<Cluster, Float> sorted = (HashMap<Cluster, Float>) sortByValue(distMap);

                sorted.keySet().iterator().next().getMembers().add(p);

            }

            // calculate new centroid and update Clusterset
            for (Cluster clust : clusterSet) {

                TreeMap<String, Long> tDistMap = new TreeMap();

                Tweet newCentroid = null;
                Long avgSumDist = new Long(0);
                for (int j = 0; j < clust.getMembers().size(); j++) {

                    avgSumDist += clust.getMembers().get(j).getAttributeValue();
                    tDistMap.put(clust.getMembers().get(j).getTweetID(),
                            clust.getMembers().get(j).getAttributeValue());
                }
                if (clust.getMembers().size() != 0) {
                    avgSumDist /= (clust.getMembers().size());
                }

                ArrayList<Long> listValues = new ArrayList<Long>(tDistMap.values());

                if (tDistMap.containsValue(findClosestNumber(listValues, avgSumDist))) {
                    // found closest
                    newCentroid = tweets
                            .get(getKeyByValue(tDistMap, findClosestNumber(listValues, avgSumDist)));
                    clust.setCentroid(newCentroid);
                }

            }

        }
        // create an iterator
        Iterator iterator = clusterSet.iterator();

        // check values
        while (iterator.hasNext()) {

            Cluster c = (Cluster) iterator.next();
            bw.write(c.getId() + "\t");
            System.out.print(c.getId() + "\t");

            for (Tweet t : c.getMembers()) {
                bw.write(t.getTweetID() + ", ");
                System.out.print(t.getTweetID() + ",");

            }
            bw.write("\n");
            System.out.println("");
        }

        System.out.println("");

        System.out.println("SSE " + sumSquaredErrror(clusterSet));

    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        bw.close();
        fw.close();
    }
}

From source file:edu.ku.brc.helpers.Encryption.java

/** I am leaving this here for documentation purposes
 * @param args input from the command line
 * @throws Exception some error/*  ww  w.j a v  a2  s  .  c  om*/
 */
public static void main(final String[] args) throws Exception {
    /*
     * If we're configured to use a third-party cryptography provider, where that provider is
     * not permanently installed, then we need to install it first.
     */
    if (EXTRA_PROVIDER != null) {
        Provider prov = (Provider) Class.forName(EXTRA_PROVIDER).newInstance();
        Security.addProvider(prov);
    }

    /*
     * The Encryption() function above uses a byte[] as input, so it's more general (it can Encryption
     * anything, not just a String), as well as using a char[] for the password, because it can
     * be overwritten once it's finished. Strings are immutable, so to purge them from RAM you
     * have to hope they get garbage collected and then the RAM gets reused. For char[]s you can
     * simply fill up the array with junk to erase the password from RAM. Anyway, use char[] if
     * you're concerned about security, but for a test case, a String works fine.
     */
    /* Our input text and password. */
    String input = "Hello World!"; //$NON-NLS-1$
    String password = "abcd"; //$NON-NLS-1$

    byte[] inputBytes = input.getBytes();
    char[] passwordChars = password.toCharArray();

    /* Encrypt the data. */
    byte[] ciphertext = encrypt(inputBytes, passwordChars);

    System.out.println("Ciphertext:"); //$NON-NLS-1$

    /*
     * This is just a little loop I made up which displays the encrypted data in hexadecimal, 30
     * bytes to a line. Obviously, the ciphertext won't necessarily be a recognizable String,
     * and it'll probably have control characters and such in it. We don't even want to convert
     * it to a String, let alone display it onscreen. If you need text, investigate some kind of
     * encoding at this point on top of the encryption, like Base64. It's not that hard to
     * implement and it'll give you text to carry from place to place. Just remember to *de*code
     * the text before calling decrypt().
     */
    int i;
    for (i = 0; i < ciphertext.length; i++) {
        String s = Integer.toHexString(ciphertext[i] & 0xFF);
        if (s.length() == 1)
            s = "0" + s; //$NON-NLS-1$
        System.out.print(s);
        if (i % 30 == 29)
            System.out.println();
    }
    if ((ciphertext.length - 1) % 30 != 29)
        System.out.println();

    String hexText = makeHEXStr(ciphertext);
    System.out.println("To:   [" + hexText + "]"); //$NON-NLS-1$ //$NON-NLS-2$
    System.out.println("From: [" + reverseHEXStr(hexText) + "]****"); //$NON-NLS-1$ //$NON-NLS-2$

    /*
     * Now, decrypt the data. Note that all we need is the password and the ciphertext.
     */
    byte[] output = decrypt(ciphertext, passwordChars);

    /* Transform the output into a string. */
    String sOutput = new String(output);

    /* Display it. */
    System.out.println("Plaintext:\n" + sOutput); //$NON-NLS-1$
}

From source file:TestSign.java

/**
 * Method main//  w  w  w  . j  a  va  2  s  .  c o m
 *
 * @param unused
 * @throws Exception
 */
public static void main(String unused[]) throws Exception {
    //J-
    String keystoreType = "JKS";
    String keystoreFile = "data/org/apache/xml/security/samples/input/keystore.jks";
    String keystorePass = "xmlsecurity";
    String privateKeyAlias = "test";
    String privateKeyPass = "xmlsecurity";
    String certificateAlias = "test";
    File signatureFile = new File("signature.xml");
    //J+
    KeyStore ks = KeyStore.getInstance(keystoreType);
    FileInputStream fis = new FileInputStream(keystoreFile);

    ks.load(fis, keystorePass.toCharArray());

    PrivateKey privateKey = (PrivateKey) ks.getKey(privateKeyAlias, privateKeyPass.toCharArray());
    javax.xml.parsers.DocumentBuilderFactory dbf = javax.xml.parsers.DocumentBuilderFactory.newInstance();

    dbf.setNamespaceAware(true);

    javax.xml.parsers.DocumentBuilder db = dbf.newDocumentBuilder();
    org.w3c.dom.Document doc = db.newDocument();
    String BaseURI = signatureFile.toURL().toString();
    XMLSignature sig = new XMLSignature(doc, BaseURI, XMLSignature.ALGO_ID_SIGNATURE_DSA);

    doc.appendChild(sig.getElement());

    {
        ObjectContainer obj = new ObjectContainer(doc);
        Element anElement = doc.createElementNS(null, "InsideObject");

        anElement.appendChild(doc.createTextNode("A text in a box"));
        obj.appendChild(anElement);

        String Id = "TheFirstObject";

        obj.setId(Id);
        sig.appendObject(obj);

        Transforms transforms = new Transforms(doc);

        transforms.addTransform(Transforms.TRANSFORM_C14N_WITH_COMMENTS);
        sig.addDocument("#" + Id, transforms, Constants.ALGO_ID_DIGEST_SHA1);
    }

    {
        X509Certificate cert = (X509Certificate) ks.getCertificate(certificateAlias);

        sig.addKeyInfo(cert);
        sig.addKeyInfo(cert.getPublicKey());
        System.out.println("Start signing");
        sig.sign(privateKey);
        System.out.println("Finished signing");
    }

    FileOutputStream f = new FileOutputStream(signatureFile);

    XMLUtils.outputDOMc14nWithComments(doc, f);
    f.close();
    System.out.println("Wrote signature to " + BaseURI);

    for (int i = 0; i < sig.getSignedInfo().getSignedContentLength(); i++) {
        System.out.println("--- Signed Content follows ---");
        System.out.println(new String(sig.getSignedInfo().getSignedContentItem(i)));
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String phrase = new String("www.java2s.com\n");

    File aFile = new File("test.txt");
    FileOutputStream outputFile = null;
    outputFile = new FileOutputStream(aFile, true);
    System.out.println("File stream created successfully.");

    FileChannel outChannel = outputFile.getChannel();

    ByteBuffer buf = ByteBuffer.allocate(1024);
    System.out.println("New buffer:           position = " + buf.position() + "\tLimit = " + buf.limit()
            + "\tcapacity = " + buf.capacity());
    // Load the data into the buffer
    for (char ch : phrase.toCharArray()) {
        buf.putChar(ch);/*from   w w w  .j a  va  2s.  c o m*/
    }
    System.out.println("Buffer after loading: position = " + buf.position() + "\tLimit = " + buf.limit()
            + "\tcapacity = " + buf.capacity());
    buf.flip();
    System.out.println("Buffer after flip:    position = " + buf.position() + "\tLimit = " + buf.limit()
            + "\tcapacity = " + buf.capacity());

    outChannel.write(buf);
    outputFile.close();
    System.out.println("Buffer contents written to file.");
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    String password = "password";

    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
    keyPairGenerator.initialize(1024);/*from  ww  w .j a v  a2 s  .c o  m*/
    KeyPair keyPair = keyPairGenerator.genKeyPair();
    String publicKeyFilename = "public";

    byte[] publicKeyBytes = keyPair.getPublic().getEncoded();

    FileOutputStream fos = new FileOutputStream(publicKeyFilename);
    fos.write(publicKeyBytes);
    fos.close();

    String privateKeyFilename = "privateKeyFilename";

    byte[] privateKeyBytes = keyPair.getPrivate().getEncoded();

    byte[] encryptedPrivateKeyBytes = passwordEncrypt(password.toCharArray(), privateKeyBytes);

    fos = new FileOutputStream(privateKeyFilename);
    fos.write(encryptedPrivateKeyBytes);
    fos.close();
}

From source file:MainClass.java

public static void main(String[] args) {
    String phrase = new String("www.java2s.com\n");

    File aFile = new File("test.txt");
    FileOutputStream outputFile = null;
    try {//from w  w w .  jav  a2 s .c o m
        outputFile = new FileOutputStream(aFile, true);
        System.out.println("File stream created successfully.");
    } catch (FileNotFoundException e) {
        e.printStackTrace(System.err);
    }

    FileChannel outChannel = outputFile.getChannel();

    ByteBuffer buf = ByteBuffer.allocate(1024);
    System.out.println("New buffer:           position = " + buf.position() + "\tLimit = " + buf.limit()
            + "\tcapacity = " + buf.capacity());

    // Load the data into the buffer
    for (char ch : phrase.toCharArray()) {
        buf.putChar(ch);
    }
    System.out.println("Buffer after loading: position = " + buf.position() + "\tLimit = " + buf.limit()
            + "\tcapacity = " + buf.capacity());
    buf.flip();
    System.out.println("Buffer after flip:    position = " + buf.position() + "\tLimit = " + buf.limit()
            + "\tcapacity = " + buf.capacity());

    try {
        outChannel.write(buf);
        outputFile.close();
        System.out.println("Buffer contents written to file.");
    } catch (IOException e) {
        e.printStackTrace(System.err);
    }
}