Java java.lang String fields, constructors, methods, implement or subclass

Introduction

In this page you can find the methods, fields and constructors for java.lang String.

The text is from its open source code.

Field

null	value The value is used for character storage.
int	hash Cache the hash code for the string
Comparator	CASE_INSENSITIVE_ORDER A Comparator that orders String objects as by compareToIgnoreCase .

Constructor

	String() Initializes a newly created String object so that it represents an empty character sequence.
	String(String original) Initializes a newly created String object so that it represents the same sequence of characters as the argument; in other words, the newly created string is a copy of the argument string.
	String(char value[]) Allocates a new String so that it represents the sequence of characters currently contained in the character array argument.
	String(byte[] bytes) Constructs a new String by decoding the specified array of bytes using the platform's default charset.
	String(StringBuffer buffer) Allocates a new string that contains the sequence of characters currently contained in the string buffer argument.
	String(StringBuilder builder) Allocates a new string that contains the sequence of characters currently contained in the string builder argument.
	String(char value[], int offset, int count) Allocates a new String that contains characters from a subarray of the character array argument.
	String(int[] codePoints, int offset, int count) Allocates a new String that contains characters from a subarray of the Unicode code point array argument.
	String(byte bytes[], int offset, int length) Constructs a new String by decoding the specified subarray of bytes using the platform's default charset.
	String(byte ascii[], int hibyte, int offset, int count) Allocates a new String constructed from a subarray of an array of 8-bit integer values.
	String(byte bytes[], int offset, int length, String charsetName) Constructs a new String by decoding the specified subarray of bytes using the specified charset.
	String(byte bytes[], int offset, int length, Charset charset) Constructs a new String by decoding the specified subarray of bytes using the specified java.nio.charset.Charset charset .
	String(char[] value, int off, int len, Void sig)
	String(byte ascii[], int hibyte) Allocates a new String containing characters constructed from an array of 8-bit integer values.
	String(byte bytes[], String charsetName) Constructs a new String by decoding the specified array of bytes using the specified java.nio.charset.Charset charset .
	String(byte bytes[], Charset charset) Constructs a new String by decoding the specified array of bytes using the specified java.nio.charset.Charset charset .
	String(AbstractStringBuilder asb, Void sig)
	String(byte[] value, byte coder)

Method

char	charAt(int index) Returns the char value at the specified index.
IntStream	chars() Returns a stream of int zero-extending the char values from this sequence.
Object	clone() Creates and returns a copy of this object.
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 String .
IntStream	codePoints() Returns a stream of code point values from this sequence.
int	compare(CharSequence cs1, CharSequence cs2) Compares two CharSequence instances lexicographically.
int	compareTo(String anotherString) Compares two strings lexicographically.
int	compareToIgnoreCase(String str) Compares two strings lexicographically, ignoring case differences.
String	concat(String str) Concatenates the specified string to the end of this string.
boolean	contains(CharSequence s) Returns true if and only if this string contains the specified sequence of char values.
boolean	contentEquals(StringBuffer sb) Compares this string to the specified StringBuffer .
boolean	contentEquals(CharSequence cs) Compares this string to the specified CharSequence .
String	copyValueOf(char data[]) Equivalent to #valueOf(char[]) .
String	copyValueOf(char data[], int offset, int count) Equivalent to #valueOf(char[],int,int) .
boolean	endsWith(String suffix) Tests if this string ends with the specified suffix.
boolean	equals(Object anObject) Compares this string to the specified object.
boolean	equalsIgnoreCase(String anotherString) Compares this String to another String , ignoring case considerations.
String	format(String format, Object... args) Returns a formatted string using the specified format string and arguments.
String	format(Locale l, String format, Object... args) Returns a formatted string using the specified locale, format string, and arguments.
byte[]	getBytes(String charsetName) Encodes this String into a sequence of bytes using the named charset, storing the result into a new byte array.
byte[]	getBytes(Charset charset) Encodes this String into a sequence of bytes using the given java.nio.charset.Charset charset , storing the result into a new byte array.
byte[]	getBytes() Encodes this String into a sequence of bytes using the platform's default charset, storing the result into a new byte array.
void	getBytes(int srcBegin, int srcEnd, byte dst[], int dstBegin) Copies characters from this string into the destination byte array.
void	getChars(int srcBegin, int srcEnd, char dst[], int dstBegin) Copies characters from this string into the destination character array.
Class	getClass() Returns the runtime class of this Object .
int	hashCode() Returns a hash code for this string.
int	indexOf(int ch) Returns the index within this string of the first occurrence of the specified character.
int	indexOf(String str) Returns the index within this string of the first occurrence of the specified substring.
int	indexOf(int ch, int fromIndex) Returns the index within this string of the first occurrence of the specified character, starting the search at the specified index.
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.
String	intern() Returns a canonical representation for the string object.
boolean	isEmpty() Returns true if, and only if, #length() is 0 .
String	join(CharSequence delimiter, CharSequence... elements) Returns a new String composed of copies of the CharSequence elements joined together with a copy of the specified delimiter .
String	join(CharSequence delimiter, Iterable elements) Returns a new String composed of copies of the CharSequence elements joined together with a copy of the specified delimiter .
int	lastIndexOf(int ch) Returns the index within this string of the last occurrence of the specified character.
int	lastIndexOf(String str) Returns the index within this string of the last occurrence of the specified substring.
int	lastIndexOf(int ch, int fromIndex) Returns the index within this string of the last occurrence of the specified character, searching backward starting at the specified index.
int	lastIndexOf(String str, int fromIndex) Returns the index within this string of the last occurrence of the specified substring, searching backward starting at the specified index.
int	length() Returns the length of this string.
boolean	matches(String regex) Tells whether or not this string matches the given regular expression.
void	notify() Wakes up a single thread that is waiting on this object's monitor.
void	notifyAll() Wakes up all threads that are waiting on this object's monitor.
int	offsetByCodePoints(int index, int codePointOffset) Returns the index within this String that is offset from the given index by codePointOffset code points.
boolean	regionMatches(int toffset, String other, int ooffset, int len) Tests if two string regions are equal.
boolean	regionMatches(boolean ignoreCase, int toffset, String other, int ooffset, int len) Tests if two string regions are equal.
String	replace(char oldChar, char newChar) Returns a string resulting from replacing all occurrences of oldChar in this string with newChar .
String	replace(CharSequence target, CharSequence replacement) Replaces each substring of this string that matches the literal target sequence with the specified literal replacement sequence.
String	replaceAll(String regex, String replacement) Replaces each substring of this string that matches the given regular expression with the given replacement.
String	replaceFirst(String regex, String replacement) Replaces the first substring of this string that matches the given regular expression with the given replacement.
String[]	split(String regex) Splits this string around matches of the given regular expression.
String[]	split(String regex, int limit) Splits this string around matches of the given regular expression.
boolean	startsWith(String prefix) Tests if this string starts with the specified prefix.
CharSequence	subSequence(int beginIndex, int endIndex) Returns a character sequence that is a subsequence of this sequence.
String	substring(int beginIndex) Returns a string that is a substring of this string.
String	substring(int beginIndex, int endIndex) Returns a string that is a substring of this string.
char[]	toCharArray() Converts this string to a new character array.
String	toLowerCase() Converts all of the characters in this String to lower case using the rules of the default locale.
String	toLowerCase(Locale locale) Converts all of the characters in this String to lower case using the rules of the given Locale .
String	toString() This object (which is already a string!) is itself returned.
String	toUpperCase() Converts all of the characters in this String to upper case using the rules of the default locale.
String	toUpperCase(Locale locale) Converts all of the characters in this String to upper case using the rules of the given Locale .
String	trim() Returns a string whose value is this string, with all leading and trailing space removed, where space is defined as any character whose codepoint is less than or equal to 'U+0020' (the space character).
String	valueOf(Object obj) Returns the string representation of the Object argument.
String	valueOf(char data[]) Returns the string representation of the char array argument.
String	valueOf(boolean b) Returns the string representation of the boolean argument.
String	valueOf(char c) Returns the string representation of the char argument.
String	valueOf(int i) Returns the string representation of the int argument.
String	valueOf(long l) Returns the string representation of the long argument.
String	valueOf(float f) Returns the string representation of the float argument.
String	valueOf(double d) Returns the string representation of the double argument.
String	valueOf(char data[], int offset, int count) Returns the string representation of a specific subarray of the char array argument.
void	wait() Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
void	wait(long timeoutMillis) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.