java.lang.Character toLowerCase(int codePoint)


The Character.toLowerCase(int codePoint) java method converts the character (Unicode code point) argument to lowercase using case mapping information from the UnicodeData file.
Note that Character.isLowerCase(Character.toLowerCase(codePoint)) does not always return true for some ranges of characters, particularly those that are symbols or ideographs.

In general, String.toLowerCase() should be used to map characters to lowercase. String case mapping methods have several benefits over Character case mapping methods. String case mapping methods can perform locale-sensitive mappings, context-sensitive mappings, and 1:M character mappings, whereas the Character case mapping methods cannot.

The toLowerCase(int codePoint) method of Character class is static thus it should be accessed statically which means the we would be calling this method in this format:

Character.toLowerCase(int codePoint)

Non static method is usually called by just declaring method_name(argument) however in this case since the method is static, it should be called by appending the class name as suffix. We will be encountering a compilation problem if we call the java toLowerCase() method non statically.

Method Syntax

public static int toLowerCase(int codePoint)

Method Argument

Data Type Parameter Description
int codepoint the character (Unicode code point) to be converted.

Method Returns

The toLowerCase(int codePoint) method of Character class return the lowercase equivalent of the character (Unicode code point), if any; otherwise, the character itself.


Requires Java 1.5 and up

Java Character toLowerCase(int codePoint) Example

Below is a simple java example on the usage of toLowerCase(int codePoint) method of Character class.


 * This example source code demonstrates the use of 
 * toLowerCase(int codePoint) method of Character class.

public class CharacterToLowerCaseCodePointExample {

	public static void main(String[] args) {

		// initialize a char
		int codepoint = 88;

		// convert codepoint to char
		char ch = (char) codepoint;	

		// convert the code point to lower case
		char chLower = Character.toLowerCase(ch);
		// print the result
		System.out.println("character '" + ch + "' lower case is " + chLower);



Sample Output

Below is the sample output when you run the above example.

java Character toLowerCase(int codePoint) example output