Created
February 27, 2020 07:45
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Java string methods (https://www.w3schools.com/java/java_ref_string.asp)
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Method Description Return Type | |
charAt() Returns the character at the specified index (position) char | |
codePointAt() Returns the Unicode of the character at the specified index int | |
codePointBefore() Returns the Unicode of the character before the specified index int | |
codePointCount() Returns the Unicode in the specified text range of this String int | |
compareTo() Compares two strings lexicographically int | |
compareToIgnoreCase() Compares two strings lexicographically, ignoring case differences int | |
concat() Appends a string to the end of another string String | |
contains() Checks whether a string contains a sequence of characters boolean | |
contentEquals() Checks whether a string contains the exact same sequence of characters of the specified CharSequence or StringBuffer boolean | |
copyValueOf() Returns a String that represents the characters of the character array String | |
endsWith() Checks whether a string ends with the specified character(s) boolean | |
equals() Compares two strings. Returns true if the strings are equal, and false if not boolean | |
equalsIgnoreCase() Compares two strings, ignoring case considerations boolean | |
format() Returns a formatted string using the specified locale, format string, and arguments String | |
getBytes() Encodes this String into a sequence of bytes using the named charset, storing the result into a new byte array byte[] | |
getChars() Copies characters from a string to an array of chars void | |
hashCode() Returns the hash code of a string int | |
indexOf() Returns the position of the first found occurrence of specified characters in a string int | |
intern() Returns the index within this string of the first occurrence of the specified character, starting the search at the specified index String | |
isEmpty() Checks whether a string is empty or not boolean | |
lastIndexOf() Returns the position of the last found occurrence of specified characters in a string int | |
length() Returns the length of a specified string int | |
matches() Searches a string for a match against a regular expression, and returns the matches boolean | |
offsetByCodePoints() Returns the index within this String that is offset from the given index by codePointOffset code points int | |
regionMatches() Tests if two string regions are equal boolean | |
replace() Searches a string for a specified value, and returns a new string where the specified values are replaced String | |
replaceFirst() Replaces the first occurrence of a substring that matches the given regular expression with the given replacement String | |
replaceAll() Replaces each substring of this string that matches the given regular expression with the given replacement String | |
split() Splits a string into an array of substrings String[] | |
startsWith() Checks whether a string starts with specified characters boolean | |
subSequence() Returns a new character sequence that is a subsequence of this sequence CharSequence | |
substring() Extracts the characters from a string, beginning at a specified start position, and through the specified number of character String | |
toCharArray() Converts this string to a new character array char[] | |
toLowerCase() Converts a string to lower case letters String | |
toString() Returns the value of a String object String | |
toUpperCase() Converts a string to upper case letters String | |
trim() Removes whitespace from both ends of a string String | |
valueOf() Returns the primitive value of a String object String |
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