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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