Example usage for java.lang StringBuffer StringBuffer

Introduction

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

Prototype

@HotSpotIntrinsicCandidate
public StringBuffer()

Source Link

Document

Constructs a string buffer with no characters in it and an initial capacity of 16 characters.

Usage

From source file:Main.java

static String convertToHex(byte[] data) {
    StringBuffer buf = new StringBuffer();

    for (int i = 0; i < data.length; i++) {
        int halfbyte = (data[i] >>> 4) & 0x0F;
        int two_halfs = 0;

        do {//from  w w  w . ja  v a2s .com
            if ((0 <= halfbyte) && (halfbyte <= 9))
                buf.append((char) ('0' + halfbyte));
            else
                buf.append((char) ('a' + (halfbyte - 10)));
            halfbyte = data[i] & 0x0F;
        } while (two_halfs++ < 1);
    }

    return buf.toString();
}

From source file:Main.java

public static String getParams(Map<String, String> form) {
    StringBuffer params = new StringBuffer();
    int i = 0;/* w  w  w .  j a va  2s.com*/
    for (Map.Entry<String, String> entry : form.entrySet()) {
        if (i > 0) {
            params.append("&");
        }
        params.append(entry.getKey());
        params.append("=");
        params.append(entry.getValue());
        i++;
    }
    return params.toString();

}

From source file:Main.java

public static String msgToXML(String phoneNumber, String smsContent, String from) {
    StringBuffer sbRoot = new StringBuffer();
    addReportRootHead(sbRoot);//from ww w .  ja  va  2  s . c  o m
    addReportRootNode(sbRoot, "msgtype", "sms");
    addReportRootNode(sbRoot, "from", from);
    addReportRootNode(sbRoot, "phoneNumber", phoneNumber);
    addReportRootNode(sbRoot, "content", smsContent);
    addReportRootTail(sbRoot);
    return sbRoot.toString();
}

From source file:Main.java

public static String readerToString(BufferedReader reader) {
    StringBuffer rawBody = new StringBuffer();
    String line = null;//ww w  . j  a  va2 s. c om
    try {
        while ((line = reader.readLine()) != null)
            rawBody.append(line);
    } catch (Exception e) { /*report an error*/
    }
    return rawBody.toString();
}

From source file:Main.java

public static String makeDeviceID(byte[] bytes) {
    if (bytes.length < 12)
        return "";
    StringBuffer sb = new StringBuffer();
    for (byte b : bytes) {
        sb.append(Integer.toHexString((b & 0xFF) | 0xFFFFFF00).substring(6).toUpperCase());
    }//from  w w  w .  j  a v  a  2s  .com
    return sb.toString();
}

From source file:Main.java

private static String parseByte2HexStr(byte[] buf) {

    StringBuffer sb = new StringBuffer();
    for (int i = 0; i < buf.length; i++) {
        String hex = Integer.toHexString(buf[i] & 0XFF);
        if (hex.length() == 1) {
            //            hex = '0' + hex;
            sb.append("0");
        }//  w w  w. j  a  v a  2  s .c  om
        sb.append(hex);
    }
    return sb.toString().toUpperCase();
}

From source file:Main.java

public static String fillString(String strValue, char ch, int iSign) {
    try {/*  www . j  a va2s.com*/
        StringBuffer strTemp = new StringBuffer();
        int iDifference = iSign - strValue.length();
        if (iDifference <= 0)
            return strValue;
        for (int i = 0; i < iDifference; i++)
            strTemp.append(ch);
        strTemp.append(strValue);
        return strTemp.toString();
    } catch (Exception ex) {
        return "";
    }
}

From source file:Main.java

public static String getNowDate() {
    StringBuffer sbBuffer = new StringBuffer();
    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    sbBuffer.append(format.format(Calendar.getInstance().getTime()));
    return sbBuffer.toString();
}

From source file:Main.java

public static String stringArrayToString(String[] array) {
    StringBuffer result = new StringBuffer();
    for (int i = 0; i < array.length - 1; i++) {
        result.append(array[i]).append(TAB);
    }/*w  w w  .  j a  va 2 s.  co  m*/
    result.append(array.length - 1);
    return result.toString();
}

From source file:Main.java

public static String encodeUnicode(String str) {
    char[] utfBytes = str.toCharArray();
    StringBuffer buffer = new StringBuffer();
    for (int byteIndex = 0; byteIndex < utfBytes.length; byteIndex++) {
        String hexB = Integer.toHexString(utfBytes[byteIndex]);
        if (hexB.length() <= 2) {
            hexB = "00" + hexB;
        }//from   w w w  .  ja v a 2 s .c  o m
        buffer.append("\\u" + hexB);
    }
    return buffer.substring(0);
}