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 String getHexStr(byte[] b) {
    StringBuilder builder = new StringBuilder();
    ByteArrayInputStream input = new ByteArrayInputStream(b);
    int i = 0;//from  ww w .  ja  v  a  2s  . co m
    while ((i = input.read()) != -1) {
        builder.append(
                Integer.toHexString(i).length() == 2 ? Integer.toHexString(i) : 0 + Integer.toHexString(i));
        builder.append(" ");
    }
    return builder.toString();
}

From source file:Main.java

public static String getRandomNumString(int length) {
    StringBuilder builder = new StringBuilder();
    for (int i = 0; i < length; i++) {
        builder.append(String.valueOf((int) (Math.random() * 10)));
    }/*from w ww .  j  av a2 s. c om*/
    return builder.toString();
}

From source file:Main.java

public static String join(int... array) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < array.length; i++) {
        sb.append(array[i]);//from   www  .ja  v  a 2  s  .  co m
        if (i < array.length - 1)
            sb.append(',');
    }

    return sb.toString();
}

From source file:Main.java

public static String generateRandomStrs(int strCount) {
    StringBuilder randomStrs = new StringBuilder();
    Random randomGenerator = new Random();
    for (int i = 1; i < strCount; i++) {
        int randomInt = randomGenerator.nextInt(26);
        randomStrs.append((char) (randomInt + 'a'));
    }/*  w  w  w  .  j  a  va 2 s.co  m*/

    return randomStrs.toString();
}

From source file:Main.java

public static String HdHrIpAddressToString(int ipAddress) {
    StringBuilder theBuilder = new StringBuilder();

    byte[] theByteArray = HdHrIpAddressToByteArray(ipAddress);

    for (int i = 0; i < theByteArray.length; i++) {
        if (i == 0) {
            theBuilder.append("" + (int) (theByteArray[i] & 0xFF));
        } else {/*w ww .  j  a  v a2  s . c o  m*/
            theBuilder.append("." + (int) (theByteArray[i] & 0xFF));
        }
    }

    return theBuilder.toString();
}

From source file:Main.java

public static <T> String listToString(List<T> list) {
    StringBuilder builder = new StringBuilder();
    boolean firstCheck = true;
    for (T s : list) {
        if (firstCheck) {
            builder.append(s);/*from w  ww.  ja va 2 s.  c o m*/
            firstCheck = false;
        } else {
            builder.append(",");
            builder.append(s);
        }
    }
    return builder.toString();
}

From source file:Main.java

public static String join(Object[] words, String seperator) {
    StringBuilder sb = new StringBuilder();
    if (words != null) {
        for (int i = 0; i < words.length; i++) {
            sb.append(words[i]);//from w w  w.j  av  a  2s.  co m
            if (i < words.length - 1) {
                sb.append(seperator);
            }
        }
    }
    return sb.toString();
}

From source file:Main.java

public static String join(Object[] words, String seperator) {
    StringBuilder sb = new StringBuilder();
    if (words != null) {
        for (int i = 0; i < words.length; ++i) {
            sb.append(words[i]);/*from   www . j  av  a  2s  .c  om*/
            if (i < words.length - 1) {
                sb.append(seperator);
            }
        }
    }

    return sb.toString();
}

From source file:Main.java

public static String concat(String... texts) {
    final StringBuilder builder = new StringBuilder();

    for (final String text : texts) {
        builder.append(text);//from  ww w .  j a  v a  2 s .c o  m
    }

    return builder.toString();
}

From source file:Main.java

private static String getToken(String json) {
    StringBuilder buf = new StringBuilder();
    boolean isInYinHao = false;
    while (json.length() > 0) {
        String token = json.substring(0, 1);
        json = json.substring(1);//from w w  w  .j ava2s  .c o  m

        if (!isInYinHao && (token.equals(":") || token.equals("{") || token.equals("}") || token.equals("[")
                || token.equals("]") || token.equals(","))) {
            if (buf.toString().trim().length() == 0) {
                buf.append(token);
            }

            break;
        }

        if (token.equals("\\")) {
            buf.append(token);
            buf.append(json.substring(0, 1));
            json = json.substring(1);
            continue;
        }
        if (token.equals("\"")) {
            buf.append(token);
            if (isInYinHao) {
                break;
            } else {
                isInYinHao = true;
                continue;
            }
        }
        buf.append(token);
    }
    return buf.toString();
}