java.lang.Character isLowerCase(char ch)


The Character.isLowerCase(char ch) java method determines if the specified character is a lowercase character.

A character is lowercase if its general category type, provided by Character.getType(ch), is LOWERCASE_LETTER, or it has contributory property Other_Lowercase as defined by the Unicode Standard.

This method cannot handle supplementary characters. To support all Unicode characters, including supplementary characters, use the isLowerCase(int) method.

The isLowerCase(char ch) 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.isLowerCase(char ch)

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 isLowerCase() method non statically.

Method Syntax

public static boolean isLowerCase(char ch)

Method Argument

Data Type Parameter Description
char ch the character to be tested.

Method Returns

The isLowerCase(char ch) method of Character class returns true if the character is lowercase; false otherwise.


Requires Java 1.0 and up

Java Character isLowerCase(char ch) Example

Below is a simple java example on the usage of isLowerCase(char ch) method of Character class.


import java.util.Scanner;

 * This example source code demonstrates the use of 
 * isLowerCase(char ch) method of Character class.

public class CharacterIsLowerCaseCharExample {

	public static void main(String[] args) {

		// Ask for user input
		System.out.print("Enter a character:");
		// use scanner to get the user input
		Scanner s = new Scanner(;
		// get a single character
		char value = s.nextLine().toCharArray()[0];
		// close the scanner object
		// check if the user input is lower case or not
		boolean checkBool = Character.isLowerCase(value);
		// print result
			System.out.print("User input '"+value+"' is lower case");
			System.out.print("User input '"+value+"' is not lower case");


Sample Output

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

java Character isLowerCase(char ch) example output