Example usage for java.lang StringBuilder length

Introduction

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

Prototype

int length();

Source Link

Document

Returns the length of this character sequence.

Usage

From source file:Main.java

public static String join(List<String> paramList) {
    StringBuilder localStringBuilder = new StringBuilder(11 * paramList.size());
    Iterator localIterator = paramList.iterator();
    while (localIterator.hasNext()) {
        String str = (String) localIterator.next();
        if (localStringBuilder.length() != 0)
            localStringBuilder.append(",");
        localStringBuilder.append(str);/*  w ww  .ja v  a2 s  . c  o m*/
    }
    return localStringBuilder.toString();
}

From source file:com.ihelpoo.app.common.DeviceUtil.java

/**
 * Returns MAC address of the given interface name.
 *
 * @param interfaceName eth0, wlan0 or NULL=use first interface
 * @return mac address or empty string/*from   w ww  .j av  a2 s  . c om*/
 */
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
public static String getMACAddress(String interfaceName) {
    try {
        List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface intf : interfaces) {
            if (interfaceName != null) {
                if (!intf.getName().equalsIgnoreCase(interfaceName))
                    continue;
            }
            byte[] mac = intf.getHardwareAddress();
            if (mac == null)
                return "";
            StringBuilder buf = new StringBuilder();
            for (int idx = 0; idx < mac.length; idx++)
                buf.append(String.format("%02X:", mac[idx]));
            if (buf.length() > 0)
                buf.deleteCharAt(buf.length() - 1);
            return buf.toString();
        }
    } catch (Exception ex) {
    } // for now eat exceptions
    return "";
    /*try {
    // this is so Linux hack
    return loadFileAsString("/sys/class/net/" +interfaceName + "/address").toUpperCase().trim();
    } catch (IOException ex) {
    return null;
    }*/
}

From source file:Main.java

public static String getHexString(String s) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < s.length(); i++) {
        char c = s.charAt(i);
        if (('0' <= c && c <= '9') || ('a' <= c && c <= 'f') || ('A' <= c && c <= 'F')) {
            sb.append(c);/*w  ww.j  a v a 2 s . c o  m*/
        }
    }
    if ((sb.length() % 2) != 0) {
        sb.deleteCharAt(sb.length());
    }
    return sb.toString();
}

From source file:de.micromata.genome.util.text.StringCommaList.java

/**
 * Encode basic array./*from  w w  w.  j  av a  2s  . c  o  m*/
 * 
 * @param <T> the generic type
 * @param parts the parts
 * @return the string
 */
public static <T> String encodeBasicArray(T[] parts) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < parts.length; ++i) {
        if (sb.length() > 0) {
            sb.append(",");
        }
        sb.append(parts[i].toString());
    }
    return sb.toString();
}

From source file:com.kevinshen.beyondupnp.util.Utils.java

/**
 * Returns MAC address of the given interface name.
 *
 * @param interfaceName eth0, wlan0 or NULL=use first interface
 * @return mac address or empty string//from  w w w. j a v a  2  s .  c om
 */
public static String getMACAddress(String interfaceName) {
    try {
        List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface intf : interfaces) {
            if (interfaceName != null) {
                if (!intf.getName().equalsIgnoreCase(interfaceName))
                    continue;
            }
            byte[] mac = intf.getHardwareAddress();
            if (mac == null)
                return "";
            StringBuilder buf = new StringBuilder();
            for (int idx = 0; idx < mac.length; idx++)
                buf.append(String.format("%02X:", mac[idx]));
            if (buf.length() > 0)
                buf.deleteCharAt(buf.length() - 1);
            return buf.toString();
        }
    } catch (Exception ex) {
    } // for now eat exceptions
    return "";
}

From source file:com.cloudera.cdk.data.PartitionExpression.java

/**
 * Convert a PartitionStrategy into a serialized expression. This can be used
 * to set a PartitionStrategy in an Avro property if the PartitionStrategy is
 * passed as an object./*from  ww  w  .  ja  v a 2 s.  co m*/
 */
public static String toExpression(PartitionStrategy partitionStrategy) {
    List<FieldPartitioner> fieldPartitioners = partitionStrategy.getFieldPartitioners();
    if (fieldPartitioners.size() == 1) {
        return toExpression(fieldPartitioners.get(0));
    }
    StringBuilder sb = new StringBuilder();
    sb.append("[");
    for (FieldPartitioner fieldPartitioner : fieldPartitioners) {
        if (sb.length() > 1) {
            sb.append(", ");
        }
        sb.append(toExpression(fieldPartitioner));
    }
    sb.append("]");
    return sb.toString();
}

From source file:Main.java

public static String addPadding(String t, String s, int num) {
    StringBuilder retVal;

    if (null == s || 0 >= num) {
        throw new IllegalArgumentException(INVALID_ARGUMENT);
    }/*from w ww  .java 2s .co  m*/

    if (s.length() <= num) {
        return s.concat(t);
    }

    retVal = new StringBuilder(s);

    for (int i = retVal.length(); i > 0; i -= num) {
        retVal.insert(i, t);
    }
    return retVal.toString();
}

From source file:Main.java

public static String join(List<String> paramList) {
    StringBuilder localStringBuilder = new StringBuilder(11 * paramList.size());
    Iterator localIterator = paramList.iterator();
    while (localIterator.hasNext()) {
        String str = (String) localIterator.next();
        if (localStringBuilder.length() != 0) {
            localStringBuilder.append(",");
        }//from   www . j  a  v a  2 s  . c o  m
        localStringBuilder.append(str);
    }
    return localStringBuilder.toString();
}

From source file:com.jiubang.core.util.HttpUtils.java

/**
 * Send an HTTP(s) request with POST parameters.
 * //from w  w  w . j  a  v  a 2s .c  o  m
 * @param parameters
 * @param url
 * @throws UnsupportedEncodingException
 * @throws IOException
 * @throws KeyManagementException
 * @throws NoSuchAlgorithmException
 */
static void doPost(Map<?, ?> parameters, URL url)
        throws UnsupportedEncodingException, IOException, KeyManagementException, NoSuchAlgorithmException {

    URLConnection cnx = getConnection(url);

    // Construct data
    StringBuilder dataBfr = new StringBuilder();
    Iterator<?> iKeys = parameters.keySet().iterator();
    while (iKeys.hasNext()) {
        if (dataBfr.length() != 0) {
            dataBfr.append('&');
        }
        String key = (String) iKeys.next();
        dataBfr.append(URLEncoder.encode(key, "UTF-8")).append('=')
                .append(URLEncoder.encode((String) parameters.get(key), "UTF-8"));
    }
    // POST data
    cnx.setDoOutput(true);

    OutputStreamWriter wr = new OutputStreamWriter(cnx.getOutputStream());
    Loger.d(LOG_TAG, "Posting crash report data");
    wr.write(dataBfr.toString());
    wr.flush();
    wr.close();

    Loger.d(LOG_TAG, "Reading response");
    BufferedReader rd = new BufferedReader(new InputStreamReader(cnx.getInputStream()));

    String line;
    while ((line = rd.readLine()) != null) {
        Loger.d(LOG_TAG, line);
    }
    rd.close();
}

From source file:com.codeabovelab.dm.common.security.token.SignedTokenServiceBackend.java

static String pack(String... strs) {
    StringBuilder sb = new StringBuilder();
    for (String str : strs) {
        if (sb.length() != 0) {
            sb.append(',');
        }/*from   w ww . j  a va2 s. c o m*/
        sb.append(str);
    }
    return sb.toString();
}