How to use

getChars

method

in

java.lang.Integer

 public AbstractStringBuilder append(int i) {
  if (i == Integer.MIN_VALUE) {
    append("-2147483648");
    return this;
  }
  int appendedLength = (i < 0) ? Integer.stringSize(-i) + 1
                 : Integer.stringSize(i);
  int spaceNeeded = count + appendedLength;
  ensureCapacityInternal(spaceNeeded);
  Integer.getChars(i, spaceNeeded, value);
  count = spaceNeeded;
  return this;
}

/**
 * Returns a {@code String} object representing the
 * specified integer. The argument is converted to signed decimal
 * representation and returned as a string, exactly as if the
 * argument and radix 10 were given as arguments to the {@link
 * #toString(int, int)} method.
 *
 * @param   i   an integer to be converted.
 * @return  a string representation of the argument in base 10.
 */
@JavaScriptBody(args = "i", body = "return i.toString();")
public static String toString(int i) {
  if (i == Integer.MIN_VALUE)
    return "-2147483648";
  int size = (i < 0) ? stringSize(-i) + 1 : stringSize(i);
  char[] buf = new char[size];
  getChars(i, size, buf);
  return new String(buf, 0, size);
}

 // from AbstractStringBuilder 
public AbstractStringBuilder append(int i) {
  if (i == Integer.MIN_VALUE) {
    append("-2147483648");
    return this;
  }
  int appendedLength = (i < 0) ? Integer.stringSize(-i) + 1
                 : Integer.stringSize(i);
  int spaceNeeded = count + appendedLength;
  ensureCapacityInternal(spaceNeeded);
  Integer.getChars(i, spaceNeeded, value);
  count = spaceNeeded;
  return this;
}

/**
 * Returns a {@code String} object representing the
 * specified integer. The argument is converted to signed decimal
 * representation and returned as a string, exactly as if the
 * argument and radix 10 were given as arguments to the {@link
 * #toString(int, int)} method.
 *
 * @param   i   an integer to be converted.
 * @return  a string representation of the argument in base 10.
 */
@JavaScriptBody(args = "i", body = "return i.toString();")
public static String toString(int i) {
  if (i == Integer.MIN_VALUE)
    return "-2147483648";
  int size = (i < 0) ? stringSize(-i) + 1 : stringSize(i);
  char[] buf = new char[size];
  getChars(i, size, buf);
  return new String(buf, 0, size);
}

 605     public AbstractStringBuilder append(int i) {
606         if (i == Integer.MIN_VALUE) {
607             append("-2147483648");
608             return this;
609         }
610         int appendedLength = (i < 0) ? Integer.stringSize(-i) + 1
611                                      : Integer.stringSize(i);
612         int spaceNeeded = count + appendedLength;
613         if (spaceNeeded > value.length)
614             expandCapacity(spaceNeeded);
615         Integer.getChars(i, spaceNeeded, value);
616         count = spaceNeeded;
617         return this;
618     }


110     void expandCapacity(int minimumCapacity) {
111         int newCapacity = (value.length + 1) * 2;
112         if (newCapacity < 0) {
113             newCapacity = Integer.MAX_VALUE;
114         } else if (minimumCapacity > newCapacity) {
115             newCapacity = minimumCapacity;
116         }
117         value = Arrays.copyOf(value, newCapacity);
118     }