Example usage for java.lang StringBuffer StringBuffer

Introduction

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

Prototype

public StringBuffer(CharSequence seq)

Source Link

Document

Constructs a string buffer that contains the same characters as the specified CharSequence .

Usage

From source file:Main.java

public static String byteArrayToHexString(byte[] b) {
    StringBuffer sb = new StringBuffer(b.length * 2);
    for (int i = 0; i < b.length; i++) {
        int v = b[i] & 0xff;
        if (v < 16) {
            sb.append('0');
        }/*w ww.ja  v  a  2 s .  co  m*/
        sb.append(Integer.toHexString(v));
    }
    return sb.toString().toUpperCase(Locale.US);
}

From source file:Main.java

public static String getUserAgent() {
    StringBuffer sb = new StringBuffer("Mapbox Android SDK");

    if (getVersionNumber() != null) {
        sb.append("/");
        sb.append(getVersionNumber());//w w  w  .j av a  2  s. co  m
    }

    return sb.toString();
}

From source file:Util.java

public static String dateToIsoDateTime(String date) {
    StringBuffer sb = new StringBuffer(date);

    if (date.length() >= 8) {
        //20070101 -> 2007-01-01
        //insert hyphens between year, month, and day
        sb.insert(4, '-');
        sb.insert(7, '-');

        //2007-01-01T173012 -> 2007-01-01T17:30:12
        if (date.length() >= 15) {
            //insert colons between hours, minutes, and seconds
            sb.insert(13, ':');
            sb.insert(16, ':');

            //2007-01-01T17:30:12 -> 2007-01-01T17:30:12.000
            //append milliseconds
            if (sb.toString().length() > 19)
                sb.insert(20, ".000");
            else/* w  w w  .  j  a v a  2s .co  m*/
                sb.append(".000");

            //2007-01-01T17:30:12.000 -> 2007-01-01T17:30:12.000Z
            //append UTC indicator if exists
            if (date.length() > 15 && date.charAt(15) == 'Z')
                sb.append('Z');
        }

        if (sb.length() > 19)
            sb.setLength(19);
    }

    return sb.toString();
}

From source file:Main.java

public static final String toHexString(byte[] paramArrayOfByte) {
    int i = paramArrayOfByte.length * 2;
    StringBuffer localStringBuffer1 = new StringBuffer(i);
    int j = 0;/*from   w w  w.  jav  a2  s  .com*/
    while (true) {
        int k = paramArrayOfByte.length;
        if (j >= k)
            return localStringBuffer1.toString().toLowerCase();
        int m = paramArrayOfByte[j] & 0xFF;
        if (m < 16)
            localStringBuffer1.append(48);
        String str = Integer.toHexString(m);
        StringBuffer localStringBuffer3 = localStringBuffer1.append(str);
        j += 1;
    }
}

From source file:Main.java

public static String stringAppend(String[] strings) {

    if (strings != null) {
        int len = strings.length;
        StringBuffer stb = new StringBuffer(strings[0]);
        for (int i = 1; i < len; i++) {
            stb.append(strings[i]);/*from  www  .j a v  a2s . com*/
        }
        return stb.toString();
    } else {
        return null;
    }

}

From source file:Main.java

public static String enumerationToString(Enumeration enm) {
    StringBuffer sb = new StringBuffer(100);
    boolean firstItem = true;
    sb.append("[");
    while (enm.hasMoreElements()) {
        if (!firstItem) {
            sb.append(", ");
        }//from   w  ww.j a v  a  2  s.c o  m
        sb.append(enm.nextElement());
        firstItem = false;
    }
    sb.append("]");
    return sb.toString();
}

From source file:Main.java

public static String formatTo2Bit(int num) {

    if (num < 10) {

        StringBuffer sb;//from  w  w w. j  ava2s  .  com

        sb = new StringBuffer("0");
        sb.append(num);

        return sb.toString();
    } else {

        return String.valueOf(num);
    }
}

From source file:Main.java

public static String replace(String xml, Map value) {
    int len = xml.length();
    StringBuffer buf = new StringBuffer(len);
    for (int i = 0; i < len; i++) {
        char c = xml.charAt(i);
        if (c == '$') {
            i++;/*from  www  .  j  a  v a 2s .  co  m*/
            StringBuffer key = new StringBuffer();
            char temp = xml.charAt(i);
            while (temp != '}') {
                if (temp != '{') {
                    key.append(temp);
                }
                i++;
                temp = xml.charAt(i);
            }
            String variable = (String) value.get(key.toString());
            if (null == variable) {
                buf.append("");
            } else {
                buf.append(variable);
            }
        } else {
            buf.append(c);
        }
    }
    return buf.toString();
}

From source file:Main.java

public static String replaceCharAt(String s, int pos, char c) {
    StringBuffer buf = new StringBuffer(s);
    buf.setCharAt(pos, c);/*from   w ww .  ja  va  2s. c o m*/
    return buf.toString();
}

From source file:Main.java

public static String getRandomPermutation(String s) {
    StringBuffer buffer = new StringBuffer(s);
    int n = s.length();
    for (int i = 0; i < n; i++) {
        int random = generator.nextInt(n);
        buffer = swap(buffer, i, random);
    }// w ww.j a  v a2s . co m
    return new String(buffer);
}