char charAt (int index) Returns the char value at the specified index.
Comparing the string and another object int compareTo (Object o).
int compareTo (String anotherString) Compares two strings lexicographically.
int compareToIgnoreCase (String str) Compares two strings lexicographically, without regard to case.
String concat (String str) the specified string is connected to this end of the string.
boolean endsWith (String suffix) Tests if this string ends with the specified suffix.
Comparative boolean equals (Object anObject) this string to the specified object.
boolean equalsIgnoreCase (String anotherString) compare this String to another String, ignoring case considerations.
byte [] the getBytes () using the platform's default character set encoding is byte String this sequence, storing the result into a new byte array.
byte [] getBytes (String charsetName) using the specified character set coding this String is byte sequence, and storing the result into a new byte array.
void getChars (int srcBegin, int srcEnd, char [] dst, int dstBegin) characters from the character string copied to the target array.
int hashCode () Returns the hash code of this string.
int indexOf (int ch) Returns the index of the character string appears in this first time.
int indexOf (int ch, int fromIndex) Returns the index of the substring in the first occurrence of the string.
int indexOf (String str, int fromIndex) Returns the index of the substring in the first occurrence of the string, starting at the specified index.
String intern () Returns a string representation of the normalized object.
int lastIndexOf (int ch) Returns the index within this string of characters at the last occurrence.
int lastIndexOf (int ch, int fromIndex) Returns the index within this string of characters at the last occurrence, began to reverse search from the specified index.
int lastIndexOf (String str) Returns the specified substring in this string of the rightmost occurrence index.
int lastIndexOf (String str, int fromIndex) Returns the substring index within this string of the last occurrence, starting at the specified index reverse lookup.
int length () Returns the length of this string.
boolean matches (String regex) Tell whether this string matches the given regular expression.
String replace (char oldChar, char newChar) Returns a new string, which is obtained by replacing all oldChar this string with newChar obtained.
String replaceAll (String regex, String replacement) replacing the given replacement string matches all given regular expression substring.
String replaceFirst (String regex, String replacement) replacing the given replacement string matches the given regular expression first substring.
String [] split (String regex) expression matching Splits this string given positive.
String [] split (String regex, int limit) according to match a given regular expression to split this string.
boolean startsWith (String prefix) Tests if this string to the specified prefix beginning.
boolean startsWith (String prefix, int toffset) Tests if this string substring from the specified index starts with the specified prefix.
String substring (int beginIndex) Returns a new string that is a substring of this string.
String substring (int beginIndex, int endIndex) Returns a new string that is a substring of this string.
char [] toCharArray () converts this string to a new character array.
String toLowerCase () using rules for the default locale convert all the characters in this String to lowercase.
String toLowerCase (Locale locale) to use the rules given Locale String all the characters in this are converted to lowercase.
String toString () Returns the object itself (which is already a string!).
String toUpperCase () using rules for the default locale String all the characters in this are converted to uppercase.
String toUpperCase (Locale locale) to use the rules given Locale String all the characters in this are converted to uppercase.
String trim () Returns a copy of the string, ignoring leading and trailing whitespace.
static String valueOf (primitive data type x) returns the string for the given data type representation of the argument x type.
