The index of the last occurrence of the character in the character sequence represented by this object, or -1 if the character does not occur. The String is searched backwards starting at the last character. In either case, if no such character occurs in this string, then -1 is returned. For other values of ch, it is the largest value k such that:dePointAt(k) = ch is true. For values of ch in the range from 0 to 0xFFFF (inclusive), the index (in Unicode code units) returned is the largest value k such that: Returns the index within this string of the last occurrence of the specified character. The index of the first occurrence of the specified substring, starting at the specified index, or -1 if there is no such occurrence. Parameters:įromIndex – the index from which to start the search. K >= Math.min(fromIndex, this.length()) & this.startsWith(str, k) If no such value of k exists, then -1 is returned. The returned index is the smallest value k for which: Returns the index within this string of the first occurrence of the specified substring, starting at the specified index. public int indexOf(String str, int fromIndex) The index of the first occurrence of the specified substring, or -1 if there is no such occurrence. The returned index is the smallest value k for which:this.startsWith(str, k) If no such value of k exists, then -1 is returned. Returns the index within this string of the first occurrence of the specified substring. The index of the first occurrence of the character in the character sequence represented by this object that is greater than or equal to fromIndex, or -1 if the character does not occur. Parameters:įromIndex – the index to start the search from. 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: -1 is returned.Īll indices are specified in char values (Unicode code units). If it is negative, it has the same effect as if it were zero: this entire string may be searched. There is no restriction on the value of fromIndex. In either case, if no such character occurs in this string at or after position fromIndex, then -1 is returned. For other values of ch, it is the smallest value k such that: (dePointAt(k) = ch) & (k >= fromIndex)is true. (this.charAt(k) = ch) & (k >= fromIndex) is true. For values of ch in the range from 0 to 0xFFFF (inclusive), this is the smallest value k such that: If a character with value ch occurs in the character sequence represented by this String object at an index no smaller than fromIndex, then the index of the first such occurrence is returned. Returns the index within this string of the first occurrence of the specified character, starting the search at the specified index. public int indexOf(int ch, int fromIndex) The index of the first occurrence of the character in the character sequence represented by this object, or -1 if the character does not occur. Parameters:Ī character (Unicode code point). For other values of ch, it is the smallest value k such that:dePointAt(k) = ch is true. If a character with value ch occurs in the character sequence represented by this String object, then the index (in Unicode code units) of the first such occurrence is returned. Returns the index within this string of the first occurrence of the specified character.
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