Menu
×
   ❮     
HTML CSS JAVASCRIPT SQL PYTHON JAVA PHP HOW TO W3.CSS C C++ C# BOOTSTRAP REACT MYSQL JQUERY EXCEL XML DJANGO NUMPY PANDAS NODEJS R TYPESCRIPT ANGULAR GIT POSTGRESQL MONGODB ASP AI GO KOTLIN SASS VUE DSA GEN AI SCIPY AWS CYBERSECURITY DATA SCIENCE
     ❯   

Java Tutorial

Java HOME Java Intro Java Get Started Java Syntax Java Output Java Comments Java Variables Java Data Types Java Type Casting Java Operators Java Strings Java Math Java Booleans Java If...Else Java Switch Java While Loop Java For Loop Java Break/Continue Java Arrays

Java Methods

Java Methods Java Method Parameters Java Method Overloading Java Scope Java Recursion

Java Classes

Java OOP Java Classes/Objects Java Class Attributes Java Class Methods Java Constructors Java Modifiers Java Encapsulation Java Packages / API Java Inheritance Java Polymorphism Java Inner Classes Java Abstraction Java Interface Java Enums Java User Input Java Date Java ArrayList Java LinkedList Java List Sorting Java HashMap Java HashSet Java Iterator Java Wrapper Classes Java Exceptions Java RegEx Java Threads Java Lambda Java Advanced Sorting

Java File Handling

Java Files Java Create/Write Files Java Read Files Java Delete Files

Java How To's

Add Two Numbers Count Words Reverse a String Sum of Array Elements Convert String to Array Sort an Array Find Array Average Find Smallest Element ArrayList Loop HashMap Loop Loop Through an Enum Area of Rectangle Even or Odd Number Positive or Negative Square Root Random Number

Java Reference

Java Reference Java Keywords Java String Methods Java Math Methods Java Output Methods Java Arrays Methods Java ArrayList Methods Java LinkedList Methods Java HashMap Methods Java Scanner Methods Java Iterator Methods Java Errors & Exceptions

Java Examples

Java Examples Java Compiler Java Exercises Java Quiz Java Server Java Certificate


Java String Methods


All String Methods

The String class has a set of built-in methods that you can use on strings.

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 number of Unicode values found in a 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() Converts a string into an array of bytes 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 canonical representation for the string object String
isEmpty() Checks whether a string is empty or not boolean
join() Joins one or more strings with a specified separator String
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
replaceAll() Replaces each substring of this string that matches the given regular expression with the given replacement String
replaceFirst() Replaces the first occurrence of a substring 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() Returns a new string which is the substring of a specified string 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 string representation of the specified value String

Related Pages

Java Strings Tutorial


×

Contact Sales

If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail:
sales@w3schools.com

Report Error

If you want to report an error, or if you want to make a suggestion, send us an e-mail:
help@w3schools.com

W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.

Copyright 1999-2024 by Refsnes Data. All Rights Reserved. W3Schools is Powered by W3.CSS.