Example usage for java.lang StringBuffer ensureCapacity

Introduction

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

Prototype

@Override
    public synchronized void ensureCapacity(int minimumCapacity) 

Source Link

Usage

From source file:Main.java

public static void main(String args[]) {
    StringBuffer sb = new StringBuffer();
    sb.ensureCapacity(100);
    sb.append("java2s.com");
    System.out.println(sb.capacity());
    System.out.println(sb.length());
    System.out.println(sb.toString());

}

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From source file:MainClass.java

public static void main(String[] arg) {
    StringBuffer newString = new StringBuffer("abcde");

    System.out.println(newString.capacity());

    newString.ensureCapacity(40);

    System.out.println(newString.capacity());
}

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From source file:com.slimsmart.common.util.code.EncodeUtil.java

public static String escape(String src) {
    int i;//from w  ww  . j ava2 s  .c  om
    char j;
    StringBuffer tmp = new StringBuffer();
    tmp.ensureCapacity(src.length() * 6);

    for (i = 0; i < src.length(); i++) {

        j = src.charAt(i);

        if (Character.isDigit(j) || Character.isLowerCase(j) || Character.isUpperCase(j))
            tmp.append(j);
        else if (j < 256) {
            tmp.append("%");
            if (j < 16)
                tmp.append("0");
            tmp.append(Integer.toString(j, 16));
        } else {
            tmp.append("%u");
            tmp.append(Integer.toString(j, 16));
        }
    }
    return tmp.toString();
}

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From source file:com.slimsmart.common.util.code.EncodeUtil.java

public static String unescape(String src) {
    StringBuffer tmp = new StringBuffer();
    tmp.ensureCapacity(src.length());
    int lastPos = 0, pos = 0;
    char ch;/* ww  w  .  j a  v a 2s .  c o m*/
    while (lastPos < src.length()) {
        pos = src.indexOf("%", lastPos);
        if (pos == lastPos) {
            if (src.charAt(pos + 1) == 'u') {
                ch = (char) Integer.parseInt(src.substring(pos + 2, pos + 6), 16);
                tmp.append(ch);
                lastPos = pos + 6;
            } else {
                ch = (char) Integer.parseInt(src.substring(pos + 1, pos + 3), 16);
                tmp.append(ch);
                lastPos = pos + 3;
            }
        } else {
            if (pos == -1) {
                tmp.append(src.substring(lastPos));
                lastPos = src.length();
            } else {
                tmp.append(src.substring(lastPos, pos));
                lastPos = pos;
            }
        }
    }
    return tmp.toString();
}

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From source file:com.oakhole.utils.EncodeUtils.java

/**
 * jsescape.//www .  j  a  v  a 2  s  . c  o m
 * 
 * @param src
 *            String
 * @return String
 */
public static String escapeJS(String src) {
    int i;
    char j;
    StringBuffer tmp = new StringBuffer();
    tmp.ensureCapacity(src.length() * UNICODE_LENGTH);

    for (i = 0; i < src.length(); i++) {
        j = src.charAt(i);

        if (Character.isDigit(j) || Character.isLowerCase(j) || Character.isUpperCase(j)) {
            tmp.append(j);
        } else if (j < ANSI_CHAR_CODE) {
            tmp.append("%");

            if (j < UNPRINTABLE_CHAR_CODE) {
                tmp.append("0");
            }

            tmp.append(Integer.toString(j, HEX));
        } else {
            tmp.append("%u");
            tmp.append(Integer.toString(j, HEX));
        }
    }

    return tmp.toString();
}

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From source file:com.oakhole.utils.EncodeUtils.java

/**
 * jsunescape.//from  www. j  a va 2s  . co m
 * 
 * @param src
 *            String
 * @return String
 */
public static String unescapeJS(String src) {
    StringBuffer tmp = new StringBuffer();
    tmp.ensureCapacity(src.length());

    int lastPos = 0;
    int pos = 0;
    char ch;

    while (lastPos < src.length()) {
        pos = src.indexOf('%', lastPos);

        if (pos == lastPos) {
            if (src.charAt(pos + 1) == 'u') {
                ch = (char) Integer.parseInt(src.substring(pos + 2, pos + UNICODE_LENGTH), HEX);
                tmp.append(ch);
                lastPos = pos + UNICODE_LENGTH;
            } else {
                ch = (char) Integer.parseInt(src.substring(pos + 1, pos + ANSI_LENGTH), HEX);
                tmp.append(ch);
                lastPos = pos + ANSI_LENGTH;
            }
        } else {
            if (pos == -1) {
                tmp.append(src.substring(lastPos));
                lastPos = src.length();
            } else {
                tmp.append(src.substring(lastPos, pos));
                lastPos = pos;
            }
        }
    }

    return tmp.toString();
}

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From source file:eap.util.EDcodeUtil.java

public static String unescape(String src) {
    StringBuffer tmp = new StringBuffer();
    tmp.ensureCapacity(src.length());
    int lastPos = 0, pos = 0;
    char ch;/*  www  .j  a v  a 2  s  .  c  om*/
    while (lastPos < src.length()) {
        pos = src.indexOf("%", lastPos);
        if (pos == lastPos) {
            if (src.charAt(pos + 1) == 'u') {
                ch = (char) Integer.parseInt(src.substring(pos + 2, pos + 6), 16);
                tmp.append(ch);
                lastPos = pos + 6;
            } else {
                ch = (char) Integer.parseInt(src.substring(pos + 1, pos + 3), 16);
                tmp.append(ch);
                lastPos = pos + 3;
            }
        } else {
            if (pos == -1) {
                tmp.append(src.substring(lastPos));
                lastPos = src.length();
            } else {
                tmp.append(src.substring(lastPos, pos));
                lastPos = pos;
            }
        }
    }

    return tmp.toString();
}

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From source file:com.panet.imeta.core.util.UUID4Util.java

/**
 * Turn a byte array into a version four UUID string.
 * Adapted from org.apache.commons.id.uuid.UUID.java
 * @param raw/*from w w  w.  j  av  a 2  s  .c  o m*/
 * @return
 */
private String getUUIDString(byte[] raw) {
    StringBuffer buf = new StringBuffer(new String(encodeHex(raw)));
    while (buf.length() != 32) {
        buf.insert(0, "0");
    }
    buf.ensureCapacity(32);
    buf.insert(8, '-');
    buf.insert(13, '-');
    buf.insert(18, '-');
    buf.insert(23, '-');
    return buf.toString();
}

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From source file:com.adito.boot.ReplacementEngine.java

private void replaceInto(Pattern pattern, String replacementPattern, Replacer replacer, StringBuffer input,
        StringBuffer work) {
    work.ensureCapacity(input.length());
    work.setLength(0);//from www . j  av  a  2s. co m
    if (log.isDebugEnabled())
        log.debug("Getting matcher for " + pattern.pattern());
    Matcher m = pattern.matcher(input);
    log.debug("Got matcher, finding first occurence.");
    while (m.find()) {
        if (log.isDebugEnabled())
            log.debug("Found occurence '" + m.group() + "'");
        String repl = replacer.getReplacement(pattern, m, replacementPattern);
        if (repl != null) {
            if (log.isDebugEnabled())
                log.debug("Found replacement, appending '" + repl + "'");
            if (encoder == null) {
                m.appendReplacement(work, Util.escapeForRegexpReplacement(repl));
            } else {
                m.appendReplacement(work, encoder.encode(Util.escapeForRegexpReplacement(repl)));
            }
        }
    }
    if (log.isDebugEnabled())
        log.debug("Processed matches, appending replacement.");
    m.appendTail(work);
}

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From source file:org.regenstrief.util.Util.java

/**
 * Appends part of the given CharSequence to the given StringBuffer, allocating the StringBuffer
 * if necessary//from   w  w w  . ja  va2  s.co m
 * 
 * @param sb the StringBuffer
 * @param s the String
 * @param offset the offset of the CharSequence at which to start copying
 * @param len the number of characters to copy
 * @return the StringBuffer
 **/
public final static StringBuffer append(StringBuffer sb, final CharSequence s, int offset, int len) {
    if (sb == null) {
        sb = new StringBuffer(len);
    }
    sb.ensureCapacity(sb.length() + len);
    for (len += offset; offset < len; offset++) {
        sb.append(s.charAt(offset));
    }

    return sb;
}

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