Which of these methods of class StringBuffer is used to reverse sequence of characters?
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Methods Modifier and TypeMethod and Description Appends the string representation of the Show
StringBuffer
append(char c)Appends the string representation of the StringBuffer
append(char[] str)Appends the string representation of the StringBuffer
append(char[] str,
int offset,
int len)Appends the string representation of a subarray of the StringBuffer
append(CharSequence s)Appends the specified StringBuffer
append(CharSequence s,
int start,
int end)Appends a subsequence of the specified StringBuffer
append(double d)Appends the string representation of the StringBuffer
append(float f)Appends the string representation of the StringBuffer
append(int i)Appends the string representation of the StringBuffer
append(long lng)Appends the string representation of the StringBuffer
append(Object obj)Appends the string representation of the StringBuffer
append(String str)Appends the specified string to this character sequence. StringBuffer
append(StringBuffer sb)Appends the specified to this sequence. StringBuffer
appendCodePoint(int codePoint)Appends the string representation of the int
capacity()Returns the current capacity. char
charAt(int index)Returns the int
codePointAt(int index)Returns the character (Unicode code point) at the specified index. int
codePointBefore(int index)Returns the character (Unicode code point) before the specified index. int
codePointCount(int beginIndex,
int endIndex)Returns the number of Unicode code points in the specified text range of this sequence. StringBuffer
delete(int start,
int end)Removes the characters in a substring of this sequence. StringBuffer
deleteCharAt(int index)Removes the void
ensureCapacity(int minimumCapacity)Ensures that the capacity is at least equal to the specified minimum. void
getChars(int srcBegin,
int srcEnd,
char[] dst,
int dstBegin)Characters are copied from this sequence into the destination character array int
indexOf(String str)Returns the index within this string of the first occurrence of the specified substring. int
indexOf(String str,
int fromIndex)Returns the index within this string of the first occurrence of the specified substring, starting at the specified index. StringBuffer
insert(int offset,
boolean b)Inserts the string representation of the StringBuffer
insert(int offset,
char c)Inserts the string representation of the StringBuffer
insert(int offset,
char[] str)Inserts the string representation of the StringBuffer
insert(int index,
char[] str,
int offset,
int len)Inserts the string representation of a subarray of the StringBuffer
insert(int dstOffset,
CharSequence s)Inserts the specified StringBuffer
insert(int dstOffset,
CharSequence s,
int start,
int end)Inserts a subsequence of the specified StringBuffer
insert(int offset,
double d)Inserts the string representation of the StringBuffer
insert(int offset,
float f)Inserts the string representation of the StringBuffer
insert(int offset,
int i)Inserts the string representation of the second StringBuffer
insert(int offset,
long l)Inserts the string representation of the StringBuffer
insert(int offset,
Object obj)Inserts the string representation of the StringBuffer
insert(int offset,
String str)Inserts the string into this character sequence. int
lastIndexOf(String str)Returns the index within this string of the rightmost occurrence of the specified substring. int
lastIndexOf(String str,
int fromIndex)Returns the index within this string of the last occurrence of the specified substring. int
length()Returns the length (character count). int
offsetByCodePoints(int index,
int codePointOffset)Returns the index within this sequence that is offset from the given StringBuffer
replace(int start,
int end,
String str)Replaces the characters in a substring of this sequence with characters in the specified StringBuffer
reverse()Causes this character sequence to be replaced by the reverse of the sequence. void
setCharAt(int index,
char ch)The character at the specified index is set to void
setLength(int newLength)Sets the length of the character sequence. CharSequence
subSequence(int start,
int end)Returns a new character sequence that is a subsequence of this sequence. String
substring(int start)Returns a new String
substring(int start,
int end)Returns a new String
toString()Returns a string representing the data in this sequence. void
trimToSize()Attempts to reduce storage used for the character sequence. Which of these method of class StringBuffer is used to find the length of characters?length() method:
This method is used for finding the length of the StringBuffer sequence. Length is the number of elements of the StringBuffer sequence.
Which of these method of class StringBuffer is used to concatenate?Explanation: append() method of class StringBuffer is used to concatenate the string representation to the end of invoking string.
Which of these method of class StringBuffer is used to find the length of current character sequence in Java?length() method returns the length (character count) of the sequence of characters currently represented by this object.
Which of these methods of class StringBuffer is used to extract a substring from String object?The substring(int start) method of StringBuffer class is the inbuilt method used to return a substring start from index start and extends to end of this sequence.
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