src.zip
ניתן לבחור בעת התקנת ה jdk אם להתקין את הסורסים או לא. ככה זה נראה אצלי:
/** * Returns the index within this string of the first occurrence of the * specified character, starting the search at the specified index. * <p> * If a character with value <code>ch</code> occurs in the character * sequence represented by this <code>String</code> object at an index * no smaller than <code>fromIndex</code>, then the index of the first * such occurrence is returned--that is, the smallest value <i>k</i> * such that: * <blockquote><pre> * (this.charAt(<i>k</i>) == ch) && (<i>k</i> >= fromIndex) * </pre></blockquote> * is true. If no such character occurs in this string at or after * position <code>fromIndex</code>, then <code>-1</code> is returned. * <p> * There is no restriction on the value of <code>fromIndex</code>. If it * is negative, it has the same effect as if it were zero: this entire * string may be searched. If it is greater than the length of this * string, it has the same effect as if it were equal to the length of * this string: <code>-1</code> is returned. * * @param ch a character. * @param fromIndex the index to start the search from. * @return the index of the first occurrence of the character in the * character sequence represented by this object that is greater * than or equal to <code>fromIndex</code>, or <code>-1</code> * if the character does not occur. */ public int indexOf(int ch, int fromIndex) { int max = offset + count; char v[] = value; if (fromIndex < 0) { fromIndex = 0; } else if (fromIndex >= count) { // Note: fromIndex might be near -1>>>1. return -1; } for (int i = offset + fromIndex ; i < max ; i++) { if (v == ch) { return i - offset; } } return -1; }
