Java - Character Class isLetter() Method

Character class isLetter() method: Here, we are going to learn about the isLetter() method of Character class with its syntax and example. By Preeti Jain Last updated : March 17, 2024

Character class isLetter() method

isLetter() method is available in java.lang package.
isLetter() method is used to check whether the given char value is letter or not.
isLetter() method does not throw an exception at the time of checking the given char is a letter or not.

Syntax

public boolean isLetter (Char c);

Parameters

Char c – represents the char value to be checked.

Return Value

The return type of this method is boolean, it returns a boolean value based on the following cases,

It returns true, if the given char value is either letter or character.
It returns false, if the given char value is not either letter or character.

Example

// Java program to demonstrate the example 
// of boolean isLetter (Char c) method of Character class

public class IsLetterOfCharacterClass {
    public static void main(String[] args) {
        // It returns true because the passing 
        // character is a letter   
        boolean result1 = Character.isLetter('a');

        // It returns false because the passing 
        // character is not a letter   
        boolean result2 = Character.isLetter('7');

        // Display values of result1 , result2
        System.out.println("Character.isLetter('a'): " + result1);
        System.out.println("Character.isLetter('7'): " + result2);
    }
}

Output

Character.isLetter('a'): true
Character.isLetter('7'): false

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