| Methods Summary |
|---|
| public java.lang.AbstractStringBuilder | append(java.lang.Object obj)Appends the string representation of the Object
argument.
The argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then appended to this sequence.
return append(String.valueOf(obj));
|
| public java.lang.AbstractStringBuilder | append(java.lang.String str)Appends the specified string to this character sequence.
The characters of the String argument are appended, in
order, increasing the length of this sequence by the length of the
argument. If str is null, then the four
characters "null" are appended.
Let n be the length of this character sequence just prior to
execution of the append method. Then the character at
index k in the new character sequence is equal to the character
at index k in the old character sequence, if k is less
than n; otherwise, it is equal to the character at index
k-n in the argument str.
if (str == null) str = "null";
int len = str.length();
if (len == 0) return this;
int newCount = count + len;
if (newCount > value.length)
expandCapacity(newCount);
str.getChars(0, len, value, count);
count = newCount;
return this;
|
| public java.lang.AbstractStringBuilder | append(java.lang.StringBuffer sb)
if (sb == null)
return append("null");
int len = sb.length();
int newCount = count + len;
if (newCount > value.length)
expandCapacity(newCount);
sb.getChars(0, len, value, count);
count = newCount;
return this;
|
| public java.lang.AbstractStringBuilder | append(java.lang.CharSequence s)
if (s == null)
s = "null";
if (s instanceof String)
return this.append((String)s);
if (s instanceof StringBuffer)
return this.append((StringBuffer)s);
return this.append(s, 0, s.length());
|
| public java.lang.AbstractStringBuilder | append(java.lang.CharSequence s, int start, int end)Appends a subsequence of the specified CharSequence to this
sequence.
Characters of the argument s, starting at
index start, are appended, in order, to the contents of
this sequence up to the (exclusive) index end. The length
of this sequence is increased by the value of end - start.
Let n be the length of this character sequence just prior to
execution of the append method. Then the character at
index k in this character sequence becomes equal to the
character at index k in this sequence, if k is less than
n; otherwise, it is equal to the character at index
k+start-n in the argument s.
If s is null, then this method appends
characters as if the s parameter was a sequence containing the four
characters "null".
if (s == null)
s = "null";
if ((start < 0) || (end < 0) || (start > end) || (end > s.length()))
throw new IndexOutOfBoundsException(
"start " + start + ", end " + end + ", s.length() "
+ s.length());
int len = end - start;
if (len == 0)
return this;
int newCount = count + len;
if (newCount > value.length)
expandCapacity(newCount);
for (int i=start; i<end; i++)
value[count++] = s.charAt(i);
count = newCount;
return this;
|
| public java.lang.AbstractStringBuilder | append(char[] str)Appends the string representation of the char array
argument to this sequence.
The characters of the array argument are appended, in order, to
the contents of this sequence. The length of this sequence
increases by the length of the argument.
The overall effect is exactly as if the argument were converted to
a string by the method {@link String#valueOf(char[])} and the
characters of that string were then {@link #append(String) appended}
to this character sequence.
int newCount = count + str.length;
if (newCount > value.length)
expandCapacity(newCount);
System.arraycopy(str, 0, value, count, str.length);
count = newCount;
return this;
|
| public java.lang.AbstractStringBuilder | append(char[] str, int offset, int len)Appends the string representation of a subarray of the
char array argument to this sequence.
Characters of the char array str, starting at
index offset, are appended, in order, to the contents
of this sequence. The length of this sequence increases
by the value of len.
The overall effect is exactly as if the arguments were converted to
a string by the method {@link String#valueOf(char[],int,int)} and the
characters of that string were then {@link #append(String) appended}
to this character sequence.
int newCount = count + len;
if (newCount > value.length)
expandCapacity(newCount);
System.arraycopy(str, offset, value, count, len);
count = newCount;
return this;
|
| public java.lang.AbstractStringBuilder | append(boolean b)Appends the string representation of the boolean
argument to the sequence.
The argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then appended to this sequence.
if (b) {
int newCount = count + 4;
if (newCount > value.length)
expandCapacity(newCount);
value[count++] = 't";
value[count++] = 'r";
value[count++] = 'u";
value[count++] = 'e";
} else {
int newCount = count + 5;
if (newCount > value.length)
expandCapacity(newCount);
value[count++] = 'f";
value[count++] = 'a";
value[count++] = 'l";
value[count++] = 's";
value[count++] = 'e";
}
return this;
|
| public java.lang.AbstractStringBuilder | append(char c)Appends the string representation of the char
argument to this sequence.
The argument is appended to the contents of this sequence.
The length of this sequence increases by 1.
The overall effect is exactly as if the argument were converted to
a string by the method {@link String#valueOf(char)} and the character
in that string were then {@link #append(String) appended} to this
character sequence.
int newCount = count + 1;
if (newCount > value.length)
expandCapacity(newCount);
value[count++] = c;
return this;
|
| public java.lang.AbstractStringBuilder | append(int i)Appends the string representation of the int
argument to this sequence.
The argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then appended to this sequence.
if (i == Integer.MIN_VALUE) {
append("-2147483648");
return this;
}
int appendedLength = (i < 0) ? stringSizeOfInt(-i) + 1
: stringSizeOfInt(i);
int spaceNeeded = count + appendedLength;
if (spaceNeeded > value.length)
expandCapacity(spaceNeeded);
Integer.getChars(i, spaceNeeded, value);
count = spaceNeeded;
return this;
|
| public java.lang.AbstractStringBuilder | append(long l)Appends the string representation of the long
argument to this sequence.
The argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then appended to this sequence.
if (l == Long.MIN_VALUE) {
append("-9223372036854775808");
return this;
}
int appendedLength = (l < 0) ? stringSizeOfLong(-l) + 1
: stringSizeOfLong(l);
int spaceNeeded = count + appendedLength;
if (spaceNeeded > value.length)
expandCapacity(spaceNeeded);
Long.getChars(l, spaceNeeded, value);
count = spaceNeeded;
return this;
|
| public java.lang.AbstractStringBuilder | append(float f)Appends the string representation of the float
argument to this sequence.
The argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then appended to this string sequence.
new FloatingDecimal(f).appendTo(this);
return this;
|
| public java.lang.AbstractStringBuilder | append(double d)Appends the string representation of the double
argument to this sequence.
The argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then appended to this sequence.
new FloatingDecimal(d).appendTo(this);
return this;
|
| public java.lang.AbstractStringBuilder | appendCodePoint(int codePoint)Appends the string representation of the codePoint
argument to this sequence.
The argument is appended to the contents of this sequence.
The length of this sequence increases by
{@link Character#charCount(int) Character.charCount(codePoint)}.
The overall effect is exactly as if the argument were
converted to a char array by the method {@link
Character#toChars(int)} and the character in that array were
then {@link #append(char[]) appended} to this character
sequence.
if (!Character.isValidCodePoint(codePoint)) {
throw new IllegalArgumentException();
}
int n = 1;
if (codePoint >= Character.MIN_SUPPLEMENTARY_CODE_POINT) {
n++;
}
int newCount = count + n;
if (newCount > value.length) {
expandCapacity(newCount);
}
if (n == 1) {
value[count++] = (char) codePoint;
} else {
Character.toSurrogates(codePoint, value, count);
count += n;
}
return this;
|
| public int | capacity()Returns the current capacity. The capacity is the amount of storage
available for newly inserted characters, beyond which an allocation
will occur.
return value.length;
|
| public char | charAt(int index)Returns the char value in this sequence at the specified index.
The first char value is at index 0, the next at index
1, and so on, as in array indexing.
The index argument must be greater than or equal to
0, and less than the length of this sequence.
If the char value specified by the index is a
surrogate, the surrogate
value is returned.
if ((index < 0) || (index >= count))
throw new StringIndexOutOfBoundsException(index);
return value[index];
|
| public int | codePointAt(int index)Returns the character (Unicode code point) at the specified
index. The index refers to char values
(Unicode code units) and ranges from 0 to
{@link #length()} - 1.
If the char value specified at the given index
is in the high-surrogate range, the following index is less
than the length of this sequence, and the
char value at the following index is in the
low-surrogate range, then the supplementary code point
corresponding to this surrogate pair is returned. Otherwise,
the char value at the given index is returned.
if ((index < 0) || (index >= count)) {
throw new StringIndexOutOfBoundsException(index);
}
return Character.codePointAt(value, index);
|
| public int | codePointBefore(int index)Returns the character (Unicode code point) before the specified
index. The index refers to char values
(Unicode code units) and ranges from 1 to {@link
#length()}.
If the char value at (index - 1)
is in the low-surrogate range, (index - 2) is not
negative, and the char value at (index -
2) is in the high-surrogate range, then the
supplementary code point value of the surrogate pair is
returned. If the char value at index -
1 is an unpaired low-surrogate or a high-surrogate, the
surrogate value is returned.
int i = index - 1;
if ((i < 0) || (i >= count)) {
throw new StringIndexOutOfBoundsException(index);
}
return Character.codePointBefore(value, index);
|
| public int | codePointCount(int beginIndex, int endIndex)Returns the number of Unicode code points in the specified text
range of this sequence. The text range begins at the specified
beginIndex and extends to the char at
index endIndex - 1. Thus the length (in
chars) of the text range is
endIndex-beginIndex. Unpaired surrogates within
this sequence count as one code point each.
if (beginIndex < 0 || endIndex > count || beginIndex > endIndex) {
throw new IndexOutOfBoundsException();
}
return Character.codePointCountImpl(value, beginIndex, endIndex-beginIndex);
|
| public java.lang.AbstractStringBuilder | delete(int start, int end)Removes the characters in a substring of this sequence.
The substring begins at the specified start and extends to
the character at index end - 1 or to the end of the
sequence if no such character exists. If
start is equal to end, no changes are made.
if (start < 0)
throw new StringIndexOutOfBoundsException(start);
if (end > count)
end = count;
if (start > end)
throw new StringIndexOutOfBoundsException();
int len = end - start;
if (len > 0) {
System.arraycopy(value, start+len, value, start, count-end);
count -= len;
}
return this;
|
| public java.lang.AbstractStringBuilder | deleteCharAt(int index)Removes the char at the specified position in this
sequence. This sequence is shortened by one char.
Note: If the character at the given index is a supplementary
character, this method does not remove the entire character. If
correct handling of supplementary characters is required,
determine the number of chars to remove by calling
Character.charCount(thisSequence.codePointAt(index)),
where thisSequence is this sequence.
if ((index < 0) || (index >= count))
throw new StringIndexOutOfBoundsException(index);
System.arraycopy(value, index+1, value, index, count-index-1);
count--;
return this;
|
| public void | ensureCapacity(int minimumCapacity)Ensures that the capacity is at least equal to the specified minimum.
If the current capacity is less than the argument, then a new internal
array is allocated with greater capacity. The new capacity is the
larger of:
- The
minimumCapacity argument.
- Twice the old capacity, plus
2.
If the minimumCapacity argument is nonpositive, this
method takes no action and simply returns.
if (minimumCapacity > value.length) {
expandCapacity(minimumCapacity);
}
|
| void | expandCapacity(int minimumCapacity)This implements the expansion semantics of ensureCapacity with no
size check or synchronization.
int newCapacity = (value.length + 1) * 2;
if (newCapacity < 0) {
newCapacity = Integer.MAX_VALUE;
} else if (minimumCapacity > newCapacity) {
newCapacity = minimumCapacity;
}
char newValue[] = new char[newCapacity];
System.arraycopy(value, 0, newValue, 0, count);
value = newValue;
|
| public void | getChars(int srcBegin, int srcEnd, char[] dst, int dstBegin)Characters are copied from this sequence into the
destination character array dst. The first character to
be copied is at index srcBegin; the last character to
be copied is at index srcEnd-1. The total number of
characters to be copied is srcEnd-srcBegin. The
characters are copied into the subarray of dst starting
at index dstBegin and ending at index:
dstbegin + (srcEnd-srcBegin) - 1
if (srcBegin < 0)
throw new StringIndexOutOfBoundsException(srcBegin);
if ((srcEnd < 0) || (srcEnd > count))
throw new StringIndexOutOfBoundsException(srcEnd);
if (srcBegin > srcEnd)
throw new StringIndexOutOfBoundsException("srcBegin > srcEnd");
System.arraycopy(value, srcBegin, dst, dstBegin, srcEnd - srcBegin);
|
| final char[] | getValue()Needed by String for the contentEquals method.
return value;
|
| public int | indexOf(java.lang.String str)Returns the index within this string of the first occurrence of the
specified substring. The integer returned is the smallest value
k such that:
this.toString().startsWith(str, k)
is true.
return indexOf(str, 0);
|
| public int | indexOf(java.lang.String str, int fromIndex)Returns the index within this string of the first occurrence of the
specified substring, starting at the specified index. The integer
returned is the smallest value k for which:
k >= Math.min(fromIndex, str.length()) &&
this.toString().startsWith(str, k)
If no such value of k exists, then -1 is returned.
return String.indexOf(value, 0, count,
str.toCharArray(), 0, str.length(), fromIndex);
|
| public java.lang.AbstractStringBuilder | insert(int index, char[] str, int offset, int len)Inserts the string representation of a subarray of the str
array argument into this sequence. The subarray begins at the
specified offset and extends len chars.
The characters of the subarray are inserted into this sequence at
the position indicated by index. The length of this
sequence increases by len chars.
if ((index < 0) || (index > length()))
throw new StringIndexOutOfBoundsException(index);
if ((offset < 0) || (len < 0) || (offset > str.length - len))
throw new StringIndexOutOfBoundsException(
"offset " + offset + ", len " + len + ", str.length "
+ str.length);
int newCount = count + len;
if (newCount > value.length)
expandCapacity(newCount);
System.arraycopy(value, index, value, index + len, count - index);
System.arraycopy(str, offset, value, index, len);
count = newCount;
return this;
|
| public java.lang.AbstractStringBuilder | insert(int offset, java.lang.Object obj)Inserts the string representation of the Object
argument into this character sequence.
The second argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then inserted into this sequence at the indicated
offset.
The offset argument must be greater than or equal to
0, and less than or equal to the length of this
sequence.
return insert(offset, String.valueOf(obj));
|
| public java.lang.AbstractStringBuilder | insert(int offset, java.lang.String str)Inserts the string into this character sequence.
The characters of the String argument are inserted, in
order, into this sequence at the indicated offset, moving up any
characters originally above that position and increasing the length
of this sequence by the length of the argument. If
str is null, then the four characters
"null" are inserted into this sequence.
The character at index k in the new character sequence is
equal to:
- the character at index k in the old character sequence, if
k is less than
offset
- the character at index k
-offset in the
argument str, if k is not less than
offset but is less than offset+str.length()
- the character at index k
-str.length() in the
old character sequence, if k is not less than
offset+str.length()
The offset argument must be greater than or equal to
0, and less than or equal to the length of this
sequence.
if ((offset < 0) || (offset > length()))
throw new StringIndexOutOfBoundsException(offset);
if (str == null)
str = "null";
int len = str.length();
int newCount = count + len;
if (newCount > value.length)
expandCapacity(newCount);
System.arraycopy(value, offset, value, offset + len, count - offset);
str.getChars(value, offset);
count = newCount;
return this;
|
| public java.lang.AbstractStringBuilder | insert(int offset, char[] str)Inserts the string representation of the char array
argument into this sequence.
The characters of the array argument are inserted into the
contents of this sequence at the position indicated by
offset. The length of this sequence increases by
the length of the argument.
The overall effect is exactly as if the argument were converted to
a string by the method {@link String#valueOf(char[])} and the
characters of that string were then
{@link #insert(int,String) inserted} into this
character sequence at the position indicated by
offset.
if ((offset < 0) || (offset > length()))
throw new StringIndexOutOfBoundsException(offset);
int len = str.length;
int newCount = count + len;
if (newCount > value.length)
expandCapacity(newCount);
System.arraycopy(value, offset, value, offset + len, count - offset);
System.arraycopy(str, 0, value, offset, len);
count = newCount;
return this;
|
| public java.lang.AbstractStringBuilder | insert(int dstOffset, java.lang.CharSequence s)Inserts the specified CharSequence into this sequence.
The characters of the CharSequence argument are inserted,
in order, into this sequence at the indicated offset, moving up
any characters originally above that position and increasing the length
of this sequence by the length of the argument s.
The result of this method is exactly the same as if it were an
invocation of this object's insert(dstOffset, s, 0, s.length()) method.
If s is null, then the four characters
"null" are inserted into this sequence.
if (s == null)
s = "null";
if (s instanceof String)
return this.insert(dstOffset, (String)s);
return this.insert(dstOffset, s, 0, s.length());
|
| public java.lang.AbstractStringBuilder | insert(int dstOffset, java.lang.CharSequence s, int start, int end)Inserts a subsequence of the specified CharSequence into
this sequence.
The subsequence of the argument s specified by
start and end are inserted,
in order, into this sequence at the specified destination offset, moving
up any characters originally above that position. The length of this
sequence is increased by end - start.
The character at index k in this sequence becomes equal to:
- the character at index k in this sequence, if
k is less than
dstOffset
- the character at index k
+start-dstOffset in
the argument s, if k is greater than or equal to
dstOffset but is less than dstOffset+end-start
- the character at index k
-(end-start) in this
sequence, if k is greater than or equal to
dstOffset+end-start
The dstOffset argument must be greater than or equal to
0, and less than or equal to the length of this
sequence.
The start argument must be nonnegative, and not greater than
end.
The end argument must be greater than or equal to
start, and less than or equal to the length of s.
If s is null, then this method inserts
characters as if the s parameter was a sequence containing the four
characters "null".
if (s == null)
s = "null";
if ((dstOffset < 0) || (dstOffset > this.length()))
throw new IndexOutOfBoundsException("dstOffset "+dstOffset);
if ((start < 0) || (end < 0) || (start > end) || (end > s.length()))
throw new IndexOutOfBoundsException(
"start " + start + ", end " + end + ", s.length() "
+ s.length());
int len = end - start;
if (len == 0)
return this;
int newCount = count + len;
if (newCount > value.length)
expandCapacity(newCount);
System.arraycopy(value, dstOffset, value, dstOffset + len,
count - dstOffset);
for (int i=start; i<end; i++)
value[dstOffset++] = s.charAt(i);
count = newCount;
return this;
|
| public java.lang.AbstractStringBuilder | insert(int offset, boolean b)Inserts the string representation of the boolean
argument into this sequence.
The second argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then inserted into this sequence at the indicated
offset.
The offset argument must be greater than or equal to
0, and less than or equal to the length of this
sequence.
return insert(offset, String.valueOf(b));
|
| public java.lang.AbstractStringBuilder | insert(int offset, char c)Inserts the string representation of the char
argument into this sequence.
The second argument is inserted into the contents of this sequence
at the position indicated by offset. The length
of this sequence increases by one.
The overall effect is exactly as if the argument were converted to
a string by the method {@link String#valueOf(char)} and the character
in that string were then {@link #insert(int, String) inserted} into
this character sequence at the position indicated by
offset.
The offset argument must be greater than or equal to
0, and less than or equal to the length of this
sequence.
int newCount = count + 1;
if (newCount > value.length)
expandCapacity(newCount);
System.arraycopy(value, offset, value, offset + 1, count - offset);
value[offset] = c;
count = newCount;
return this;
|
| public java.lang.AbstractStringBuilder | insert(int offset, int i)Inserts the string representation of the second int
argument into this sequence.
The second argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then inserted into this sequence at the indicated
offset.
The offset argument must be greater than or equal to
0, and less than or equal to the length of this
sequence.
return insert(offset, String.valueOf(i));
|
| public java.lang.AbstractStringBuilder | insert(int offset, long l)Inserts the string representation of the long
argument into this sequence.
The second argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then inserted into this sequence at the position
indicated by offset.
The offset argument must be greater than or equal to
0, and less than or equal to the length of this
sequence.
return insert(offset, String.valueOf(l));
|
| public java.lang.AbstractStringBuilder | insert(int offset, float f)Inserts the string representation of the float
argument into this sequence.
The second argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then inserted into this sequence at the indicated
offset.
The offset argument must be greater than or equal to
0, and less than or equal to the length of this
sequence.
return insert(offset, String.valueOf(f));
|
| public java.lang.AbstractStringBuilder | insert(int offset, double d)Inserts the string representation of the double
argument into this sequence.
The second argument is converted to a string as if by the method
String.valueOf, and the characters of that
string are then inserted into this sequence at the indicated
offset.
The offset argument must be greater than or equal to
0, and less than or equal to the length of this
sequence.
return insert(offset, String.valueOf(d));
|
| public int | lastIndexOf(java.lang.String str)Returns the index within this string of the rightmost occurrence
of the specified substring. The rightmost empty string "" is
considered to occur at the index value this.length().
The returned index is the largest value k such that
this.toString().startsWith(str, k)
is true.
return lastIndexOf(str, count);
|
| public int | lastIndexOf(java.lang.String str, int fromIndex)Returns the index within this string of the last occurrence of the
specified substring. The integer returned is the largest value k
such that:
k <= Math.min(fromIndex, str.length()) &&
this.toString().startsWith(str, k)
If no such value of k exists, then -1 is returned.
return String.lastIndexOf(value, 0, count,
str.toCharArray(), 0, str.length(), fromIndex);
|
| public int | length()Returns the length (character count).
return count;
|
| public int | offsetByCodePoints(int index, int codePointOffset)Returns the index within this sequence that is offset from the
given index by codePointOffset code
points. Unpaired surrogates within the text range given by
index and codePointOffset count as
one code point each.
if (index < 0 || index > count) {
throw new IndexOutOfBoundsException();
}
return Character.offsetByCodePointsImpl(value, 0, count,
index, codePointOffset);
|
| public java.lang.AbstractStringBuilder | replace(int start, int end, java.lang.String str)Replaces the characters in a substring of this sequence
with characters in the specified String. The substring
begins at the specified start and extends to the character
at index end - 1 or to the end of the
sequence if no such character exists. First the
characters in the substring are removed and then the specified
String is inserted at start. (This
sequence will be lengthened to accommodate the
specified String if necessary.)
if (start < 0)
throw new StringIndexOutOfBoundsException(start);
if (end > count)
end = count;
if (start > end)
throw new StringIndexOutOfBoundsException("start > end");
int len = str.length();
int newCount = count + len - (end - start);
if (newCount > value.length)
expandCapacity(newCount);
System.arraycopy(value, end, value, start + len, count - end);
str.getChars(value, start);
count = newCount;
return this;
|
| public java.lang.AbstractStringBuilder | reverse()Causes this character sequence to be replaced by the reverse of
the sequence. If there are any surrogate pairs included in the
sequence, these are treated as single characters for the
reverse operation. Thus, the order of the high-low surrogates
is never reversed.
Let n be the character length of this character sequence
(not the length in char values) just prior to
execution of the reverse method. Then the
character at index k in the new character sequence is
equal to the character at index n-k-1 in the old
character sequence.
Note that the reverse operation may result in producing
surrogate pairs that were unpaired low-surrogates and
high-surrogates before the operation. For example, reversing
"\uDC00\uD800" produces "\uD800\uDC00" which is
a valid surrogate pair.
boolean hasSurrogate = false;
int n = count - 1;
for (int j = (n-1) >> 1; j >= 0; --j) {
char temp = value[j];
char temp2 = value[n - j];
if (!hasSurrogate) {
hasSurrogate = (temp >= Character.MIN_SURROGATE && temp <= Character.MAX_SURROGATE)
|| (temp2 >= Character.MIN_SURROGATE && temp2 <= Character.MAX_SURROGATE);
}
value[j] = temp2;
value[n - j] = temp;
}
if (hasSurrogate) {
// Reverse back all valid surrogate pairs
for (int i = 0; i < count - 1; i++) {
char c2 = value[i];
if (Character.isLowSurrogate(c2)) {
char c1 = value[i + 1];
if (Character.isHighSurrogate(c1)) {
value[i++] = c1;
value[i] = c2;
}
}
}
}
return this;
|
| public void | setCharAt(int index, char ch)The character at the specified index is set to ch. This
sequence is altered to represent a new character sequence that is
identical to the old character sequence, except that it contains the
character ch at position index.
The index argument must be greater than or equal to
0, and less than the length of this sequence.
if ((index < 0) || (index >= count))
throw new StringIndexOutOfBoundsException(index);
value[index] = ch;
|
| public void | setLength(int newLength)Sets the length of the character sequence.
The sequence is changed to a new character sequence
whose length is specified by the argument. For every nonnegative
index k less than newLength, the character at
index k in the new character sequence is the same as the
character at index k in the old sequence if k is less
than the length of the old character sequence; otherwise, it is the
null character '\u0000'.
In other words, if the newLength argument is less than
the current length, the length is changed to the specified length.
If the newLength argument is greater than or equal
to the current length, sufficient null characters
('\u0000') are appended so that
length becomes the newLength argument.
The newLength argument must be greater than or equal
to 0.
if (newLength < 0)
throw new StringIndexOutOfBoundsException(newLength);
if (newLength > value.length)
expandCapacity(newLength);
if (count < newLength) {
for (; count < newLength; count++)
value[count] = '\0";
} else {
count = newLength;
}
|
| static int | stringSizeOfInt(int x)
// Requires positive x
for (int i=0; ; i++)
if (x <= sizeTable[i])
return i+1;
|
| static int | stringSizeOfLong(long x)
long p = 10;
for (int i=1; i<19; i++) {
if (x < p)
return i;
p = 10*p;
}
return 19;
|
| public java.lang.CharSequence | subSequence(int start, int end)Returns a new character sequence that is a subsequence of this sequence.
An invocation of this method of the form
sb.subSequence(begin, end)
behaves in exactly the same way as the invocation
sb.substring(begin, end)
This method is provided so that this class can
implement the {@link CharSequence} interface.
return substring(start, end);
|
| public java.lang.String | substring(int start)Returns a new String that contains a subsequence of
characters currently contained in this character sequence. The
substring begins at the specified index and extends to the end of
this sequence.
return substring(start, count);
|
| public java.lang.String | substring(int start, int end)Returns a new String that contains a subsequence of
characters currently contained in this sequence. The
substring begins at the specified start and
extends to the character at index end - 1.
if (start < 0)
throw new StringIndexOutOfBoundsException(start);
if (end > count)
throw new StringIndexOutOfBoundsException(end);
if (start > end)
throw new StringIndexOutOfBoundsException(end - start);
return new String(value, start, end - start);
|
| public abstract java.lang.String | toString()Returns a string representing the data in this sequence.
A new String object is allocated and initialized to
contain the character sequence currently represented by this
object. This String is then returned. Subsequent
changes to this sequence do not affect the contents of the
String.
|
| public void | trimToSize()Attempts to reduce storage used for the character sequence.
If the buffer is larger than necessary to hold its current sequence of
characters, then it may be resized to become more space efficient.
Calling this method may, but is not required to, affect the value
returned by a subsequent call to the {@link #capacity()} method.
if (count < value.length) {
char[] newValue = new char[count];
System.arraycopy(value, 0, newValue, 0, count);
this.value = newValue;
}
|
