Example usage for java.lang StringBuilder StringBuilder

Introduction

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

Prototype

public StringBuilder(CharSequence seq)

Source Link

Document

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

Usage

From source file:Main.java

public static String dumpJPEG(byte[] jpeg) {
    StringBuilder sb = new StringBuilder("jpeg ");
    if (jpeg == null) {
        sb.append("<null>");
    } else {/*from  w  ww  .  ja v  a  2  s . c om*/
        sb.append("length=" + jpeg.length);
    }
    return sb.toString();

}

From source file:Main.java

public static File convertFormat(File file, String newFormat) {
    StringBuilder tmpValue = new StringBuilder(file.getAbsolutePath());
    int index = tmpValue.lastIndexOf(".") + 1;
    tmpValue.delete(index, tmpValue.length());
    tmpValue.append(newFormat);/*from   w  w  w  .j  a  va  2  s.com*/
    File result = new File(tmpValue.toString());

    return result;
}

From source file:Main.java

public static String titleCase(String s) {
    StringBuilder rv = new StringBuilder(s.length());
    StringTokenizer strtok = new StringTokenizer(s);

    while (strtok.hasMoreTokens()) {
        String word = strtok.nextToken();
        String firstLetter = word.substring(0, 1);
        String restOfWord = word.substring(1);

        if (rv.length() > 0)
            rv.append(" ");
        rv.append(firstLetter.toUpperCase());
        rv.append(restOfWord.toLowerCase());
    }/*from ww  w  . j a v  a 2s. c  om*/

    return rv.toString();
}

From source file:Main.java

public static String UUID() {
    String uuid = java.util.UUID.randomUUID().toString();
    StringBuilder bf = new StringBuilder(32);
    for (int i = 0; i < uuid.length(); ++i) {
        char c = uuid.charAt(i);
        if (c != '-' && c != '_') {
            bf.append(c);/*  w  ww. ja  va2  s .co  m*/
        }
    }
    return bf.toString();
}

From source file:Main.java

private static String swapChars(String str, int lIdx, int rIdx) {
    StringBuilder sb = new StringBuilder(str);
    char l = sb.charAt(lIdx), r = sb.charAt(rIdx);
    sb.setCharAt(lIdx, r);//from  w ww  .  j  a va2s  . com
    sb.setCharAt(rIdx, l);
    return sb.toString();
}

From source file:Main.java

public static final String byteArrayToHexString(byte[] data) {
    StringBuilder sb = new StringBuilder(data.length * 2);
    for (byte b : data) {
        int v = b & 0xff;
        if (v < 16) {
            sb.append('0');
        }//from  w w  w.j a  v  a2  s  . c o  m
        sb.append(Integer.toHexString(v));
    }
    return sb.toString().toUpperCase(Locale.getDefault());
}

From source file:Main.java

public static String bytesToHexString(byte[] bytes) {
    StringBuilder sb = new StringBuilder(bytes.length);
    String temp;/*from   w ww  .j  av  a  2  s. c o m*/
    for (int i = 0; i < bytes.length; i++) {
        temp = Integer.toHexString(0xFF & bytes[i]);
        if (temp.length() < 2)
            sb.append(0);
        sb.append(temp.toUpperCase()).append(" ");
    }
    return sb.toString();
}

From source file:Main.java

private static String deriveLongerString(String str) {
    StringBuilder sb = new StringBuilder(str);
    StringBuilder builder = new StringBuilder();
    builder.append(sb.toString().toLowerCase());
    builder.append(sb.toString().toUpperCase());
    StringBuilder result = new StringBuilder();
    result.append(sb);//w w w .ja  v a 2 s  .  c  o m
    result.append(mix(builder.toString()));
    result.append(mix(builder.reverse().toString()));
    return result.toString();
}

From source file:Main.java

public static String replace(String str, String target, String replacement) {
    StringBuilder sb = new StringBuilder(str);

    int index = sb.length();
    int lenTarget = target.length();
    while ((index = sb.lastIndexOf(target, index)) != -1) {
        sb.replace(index, index + lenTarget, replacement);
        index -= lenTarget;//from  w  w  w.  j  a  v  a  2  s . c  om
    }

    return sb.toString();
}

From source file:Main.java

public static String getMoneyString(int value) {
    String returnValue = "" + value;
    StringBuilder builder = new StringBuilder(returnValue);
    if (returnValue.length() > 2) {
        builder.insert(builder.length() - 2, ".");
        builder.insert(0, "$");
    } else {/*from  ww w .  j av  a  2 s  .  c  o  m*/
        builder.insert(0, "$0.");
    }

    return builder.toString();
}