Java String Method

Last update on August 19 2022 21:50:42 (UTC/GMT +8 hours)

Introduction

public String(byte[] bytes, int offset, int length, String charsetName)

Method Summary:

Name	Type	Description
charAt(int index)	char	Returns the char value at the specified index.
codePointAt(int index)	int	Returns the character (Unicode code point) at the specified index.
codePointBefore(int index)	int	Returns the character (Unicode code point) before the specified index.
codePointCount(int beginIndex, int endIndex)	int	Returns the number of Unicode code points in the specified text range of this String.
compareTo(String anotherString)	int	Compares two strings lexicographically.
compareToIgnoreCase(String str)	int	Compares two strings lexicographically, ignoring case differences.
concat(String str)	String	Concatenates the specified string to the end of this string.
contains(CharSequence s)	boolean	Returns true if and only if this string contains the specified sequence of char values.
contentEquals(CharSequence cs)	boolean	Compares this string to the specified CharSequence.
contentEquals(StringBuffer sb)	boolean	Compares this string to the specified StringBuffer.
copyValueOf(char[] data)	String	Equivalent to valueOf(char[]).
copyValueOf(char[] data, int offset, int count)	String	Equivalent to valueOf(char[], int, int).
endsWith(String suffix)	boolean	Tests if this string ends with the specified suffix.
equals(Object anObject)	boolean	Compares this string to the specified object.
equalsIgnoreCase(String anotherString)	boolean	Compares this String to another String, ignoring case considerations.
format(String format, Object... args)	String	Returns a formatted string using the specified format string and arguments.
format(Locale l, String format, Object... args)	String	Returns a formatted string using the specified locale, format string, and arguments.
getBytes()	byte	Encodes this String into a sequence of bytes using the platform's default charset, storing the result into a new byte array.
getBytes(Charset charset)	byte	Encodes this String into a sequence of bytes using the given charset, storing the result into a new byte array.
getBytes(String charsetName)	byte	Encodes this String into a sequence of bytes using the named charset, storing the result into a new byte array.
getChars(int srcBegin, int srcEnd, char[] dst, int dstBegin)	void	Copies characters from this string into the destination character array.
hashCode()	int	Returns a hash code for this string.
indexOf(int ch)	int	Returns the index within this string of the first occurrence of the specified character
indexOf(int ch, int fromIndex)	int	Returns the index within this string of the first occurrence of the specified character, starting the search at the specified index.
indexOf(String str)	int	Returns the index within this string of the first occurrence of the specified substring.
indexOf(String str, int fromIndex)	int	Returns the index within this string of the first occurrence of the specified substring, starting at the specified index.
intern()	String	Returns a canonical representation for the string object.
isEmpty()	boolean	Returns true if, and only if, length() is 0.
join(CharSequence delimiter, CharSequence... elements)	String	Returns a new String composed of copies of the CharSequence elements joined together with a copy of the specified delimite.
join(CharSequence delimiter, Iterable<? extends CharSequence> elements)	String	Returns a new String composed of copies of the CharSequence elements joined together with a copy of the specified delimiter.
lastIndexOf(int ch)	int	Returns the index within this string of the last occurrence of the specified character.
lastIndexOf(int ch, int fromIndex)	int	Returns the index within this string of the last occurrence of the specified character, searching backward starting at the specified index.
lastIndexOf(String str)	int	Returns the index within this string of the last occurrence of the specified substring.
lastIndexOf(String str, int fromIndex)	int	Returns the index within this string of the last occurrence of the specified substring, searching backward starting at the specified index.
length()	int	Returns the length of this string.
matches(String regex)	boolean	Tells whether or not this string matches the given regular expression.
offsetByCodePoints(int index, int codePointOffset)	int	Returns the index within this String that is offset from the given index by codePointOffset code points.
regionMatches(boolean ignoreCase, int toffset, String other, int ooffset, int len)	boolean	Tests if two string regions are equal.
regionMatches(int toffset, String other, int ooffset, int len)	boolean	regionMatches(int toffset, String other, int ooffset, int len)
replace(char oldChar, char newChar)	String	Returns a string resulting from replacing all occurrences of oldChar in this string with newChar.
replace(CharSequence target, CharSequence replacement)	String	Replaces each substring of this string that matches the literal target sequence with the specified literal replacement sequence.
replaceAll(String regex, String replacement)	String	Replaces each substring of this string that matches the given regular expression with the given replacement
replaceFirst(String regex, String replacement)	String	replaceFirst(String regex, String replacement)
split(String regex)	String	Splits this string around matches of the given regular expression.
split(String regex, int limit)	String	Splits this string around matches of the given regular expression.
startsWith(String prefix)	boolean	Tests if this string starts with the specified prefix.
startsWith(String prefix, int toffset)	boolean	Tests if the substring of this string beginning at the specified index starts with the specified prefix.
subSequence(int beginIndex, int endIndex)	CharSequence	Returns a character sequence that is a subsequence of this sequence.
substring(int beginIndex)	String	Returns a string that is a substring of this string.
substring(int beginIndex, int endIndex)	String	Returns a string that is a substring of this string.
toCharArray()	char	Converts this string to a new character array.
toLowerCase()	String	Converts all of the characters in this String to lower case using the rules of the default locale.
toLowerCase(Locale locale)	String	Converts all of the characters in this String to lower case using the rules of the given Locale.
toString()	String	This object (which is already a string!) is itself returned.
toUpperCase()	String	Converts all of the characters in this String to upper case using the rules of the default locale.
toUpperCase(Locale locale)	String	Converts all of the characters in this String to upper case using the rules of the given Locale.
trim()	String	Returns a string whose value is this string, with any leading and trailing whitespace removed.
valueOf(boolean b)	boolean	Returns the string representation of the boolean argument.
valueOf(char c)	char	Returns the string representation of the char argument.
valueOf(char[] data)	char	Returns the string representation of the char array argument.
valueOf(char[] data, int offset, int count)	String	Returns the string representation of a specific subarray of the char array argument.
valueOf(double d)	String	Returns the string representation of the double argument.
valueOf(float f)	String	Returns the string representation of the float argument.
valueOf(int i)	String	Returns the string representation of the int argument.
valueOf(long l)	String	Returns the string representation of the long argument.
valueOf(Object obj)	String	Returns the string representation of the Object argument.

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