Example usage for java.lang StringBuilder StringBuilder

Introduction

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

Prototype

@HotSpotIntrinsicCandidate
public StringBuilder()

Source Link

Document

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

Usage

From source file:Main.java

public static <T> String join(T[] array, String join) {
    StringBuilder builder = new StringBuilder();
    for (T t : array) {
        builder.append(t);/*from w ww . ja  va 2s. c  om*/
        builder.append(join);
    }
    return builder.deleteCharAt(builder.length() - 1).toString();
}

From source file:Main.java

private static String bytesToHexV2(byte[] data) {
    StringBuilder buf = new StringBuilder();
    for (byte b : data) {
        int halfbyte = (b >>> 4) & 0x0F;
        int two_halfs = 0;
        do {/*from w w  w .ja  va  2 s . c o m*/
            buf.append((0 <= halfbyte) && (halfbyte <= 9) ? (char) ('0' + halfbyte)
                    : (char) ('a' + (halfbyte - 10)));
            halfbyte = b & 0x0F;
        } while (two_halfs++ < 1);
    }
    return buf.toString();
}

From source file:Main.java

private static String byteToHexString(byte[] digest) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < digest.length; i++) {
        String hex = Integer.toHexString(0xFF & digest[i]);
        if (hex.length() == 1) {
            sb.append('0');
        }// w w  w .  ja v  a 2  s . com
        sb.append(hex);
    }
    return sb.toString();
}

From source file:Main.java

public static String getSessionId() {
    StringBuilder s = new StringBuilder();

    for (int i = 8; i-- > 0;) {
        s.append(getSessionComponent());

        switch (i) {
        case 1:/*from  ww w  .ja  v a 2s  .  c om*/
        case 3:
        case 5:
        case 7:
            s.append("-");
            break;
        }
    }

    return s.toString();
}

From source file:Main.java

public static String formatPhone(String phone) {
    StringBuilder result = new StringBuilder();
    if (phone != null && phone.length() == 11) {
        String prefix = "+86 ";
        result.append(prefix);/* w  ww.  jav a  2  s.c  o  m*/
        result.append(phone.substring(0, 3)).append(" ");
        result.append(phone.substring(3, 7)).append(" ");
        result.append(phone.substring(7));
    }
    return result.toString();
}

From source file:Main.java

private static String projection(String[] projection) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < projection.length; i++) {
        sb.append(projection[i]);//from   w w w  .ja  v  a  2s.c om
        if (i != projection.length - 1) {
            sb.append(",");
        }
    }
    return sb.toString();
}

From source file:Main.java

public static String join(String[] array, String delimiter) {
    StringBuilder sb = new StringBuilder();
    for (String str : array) {
        sb.append(str);/*from  ww  w .  ja v  a  2 s.  c o m*/
        sb.append(delimiter);
    }
    return sb.toString();
}

From source file:Main.java

public static String timeFormat(int ms) {
    StringBuilder time = new StringBuilder();
    time.delete(0, time.length());/*  w  w  w .  ja  v a2  s.co  m*/
    ms /= 1000;
    int s = ms % 60;
    int min = ms / 60;
    if (min < 10) {
        time.append(0);
    }
    time.append(min).append(":");
    if (s < 10) {
        time.append(0);
    }
    time.append(s);
    return time.toString();
}

From source file:Main.java

public static String floatArrayToString(float[] array) {
    StringBuilder builder = new StringBuilder();
    for (float v : array) {
        builder.append("" + v + " ");
    }/*from  ww  w  .  j a v  a 2 s .  co  m*/
    builder.append("\n");
    return builder.toString();
}

From source file:Main.java

private static String toHexString(byte[] bytes) {
    StringBuilder hexString = new StringBuilder();
    for (byte b : bytes) {
        String str = Integer.toHexString(0xFF & b);
        while (str.length() < 2) {
            str = "0" + str;
        }/*from w  w  w.  j av a2 s. c o m*/
        hexString.append(str);
    }
    return hexString.toString();
}