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 leftPad(String source, int size, String s) {
    StringBuilder builder = new StringBuilder();
    for (int i = 0; i < size; i++)
        builder.append(s);//from w w w  . jav  a2s.  c o m
    builder.append(source);
    return builder.toString();
}

From source file:Main.java

public static String parseTime(int ms) {
    StringBuilder builder = new StringBuilder();
    int hour = ms / 1000 / 3600;
    if (hour < 10) {
        builder.append("0");
    }//from  w ww . j av a2s  .c o m
    builder.append(hour);
    builder.append(":");
    int minute = ms / 1000 % 3600 / 60;
    if (minute < 10) {
        builder.append("0");
    }
    builder.append(minute);
    builder.append(":");
    int second = ms / 1000 % 3600 % 60;
    if (second < 10) {
        builder.append("0");
    }
    builder.append(second);
    return builder.toString();
}

From source file:Main.java

public static String bytesToHexString(byte[] src) {
    StringBuilder stringBuilder = new StringBuilder();
    if (src == null || src.length <= 0) {
        return null;
    }/*from  ww w  .j  a v a  2 s .c o  m*/
    char[] buffer = new char[2];
    for (int i = 0; i < src.length; i++) {
        buffer[0] = Character.forDigit((src[i] >>> 4) & 0x0F, 16);
        buffer[1] = Character.forDigit(src[i] & 0x0F, 16);
        stringBuilder.append(buffer);
    }
    return stringBuilder.toString();
}

From source file:Main.java

public static String bytesToNoSpaceHexString(byte abyte0[]) {
    StringBuilder stringbuilder = new StringBuilder();
    for (int i = 0; i < abyte0.length; i++) {
        stringbuilder.append(String.format("%02x", new Object[] { Byte.valueOf(abyte0[i]) }));
    }//from w w  w  .j a  v  a 2  s  .  co  m

    return stringbuilder.toString();
}

From source file:Main.java

public static String floatArrayToStringWithRadToDeg(float[] array) {
    StringBuilder builder = new StringBuilder();
    for (float v : array) {
        builder.append("" + 57.295776f * v + " ");
    }/*from   ww w .j  a  v a2s.  c  o m*/
    builder.append("\n");
    return builder.toString();
}

From source file:Main.java

public static String join(String[] array, String delimiter) {
    StringBuilder sb = new StringBuilder();

    for (int i = 0; i < array.length; i++) {
        sb.append(array[i]);//from   w  w  w .  ja va2  s .c  o  m

        if (i < (array.length - 1)) {
            sb.append(delimiter);
        }
    }

    return sb.toString();
}

From source file:Main.java

public static <T> String join(T[] array, String cement) {
    StringBuilder builder = new StringBuilder();

    if (array == null || array.length == 0) {
        return null;
    }//from w ww  .j  a  v  a2  s . co m
    for (T t : array) {
        builder.append(t).append(cement);
    }

    builder.delete(builder.length() - cement.length(), builder.length());

    return builder.toString();
}

From source file:Main.java

private static String convertToMac(byte[] mac) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < mac.length; i++) {
        byte b = mac[i];
        int value = 0;
        if (b >= 0 && b <= 16) {
            value = b;/* w  w  w.  java2  s .  c o m*/
            sb.append("0" + Integer.toHexString(value));
        } else if (b > 16) {
            value = b;
            sb.append(Integer.toHexString(value));
        } else {
            value = 256 + b;
            sb.append(Integer.toHexString(value));
        }
        if (i != mac.length - 1) {
            sb.append(":");
        }
    }
    return sb.toString();
}

From source file:Main.java

public static String addStringsWithSpaces(Object... params) {
    StringBuilder stringBuilder = new StringBuilder();
    for (Object s : params) {
        stringBuilder.append(s);//from   ww w .  j  a v a2 s .  c om
        stringBuilder.append(" ");
    }
    return stringBuilder.toString();

}

From source file:Main.java

public static String join(String seperator, String[] array) {
    StringBuilder sb = new StringBuilder();
    if (array != null) {

        for (int i = 0; i < array.length; i++) {
            sb.append(array[i]);/*from w w w .j a v a2 s.c o m*/
            if (i < array.length - 1) {
                sb.append(seperator);
            }
        }

    }
    return sb.toString();

}