RetroSearch Browse

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://www.geeksforgeeks.org/java/character-isletterordigit-in-java-with-examples/ below:

Character.isLetterOrDigit() in Java with examples

Last Updated : 06 Dec, 2018

The

java.lang.Character.isLetterOrDigit(char ch)

is an inbuilt method in java which determines if the specified character is a letter or digit.

Syntax:

public static boolean isLetterOrDigit(char ch)

Parameters:

The function accepts a single mandatory parameter

which signifies the character to be tested.

Return value:

This function returns a boolean value. The boolean value is

true

if the character is a letter or digit else it

false

. Below programs illustrate the above method:

Program 1: Java


 // Java program to illustrate the
// Character.isLetterOrDigit() method

import java.lang.*;

public class GFG {

    public static void main(String[] args)
    {

        // two characters
        char c1 = 'Z', c2 = '2';

        // Function to check if the character is letter or digit
        boolean bool1 = Character.isLetterOrDigit(c1);
        System.out.println(c1 + " is a letter/digit ? " + bool1);

        // Function to check if the character is letter or digit
        boolean bool2 = Character.isLetterOrDigit(c2);
        System.out.println(c2 + " is a letter/digit ? " + bool2);
    }
}

Output:

Z is a letter/digit ? true
2 is a letter/digit ? true

Program 2: Java


 // Java program to illustrate the
// Character.isLetterOrDigit() method

import java.lang.*;

public class GFG {

    public static void main(String[] args)
    {

        // assign character
        char c1 = 'D', c2 = '/';

        // Function to check if the character is letter or digit
        boolean bool1 = Character.isLetterOrDigit(c1);
        System.out.println(c1 + " is a letter/digit ? " + bool1);

        // Function to check if the character is letter or digit
        boolean bool2 = Character.isLetterOrDigit(c2);
        System.out.println(c2 + " is a letter/digit ? " + bool2);
    }
}

Output:

D is a letter/digit ? true
/ is a letter/digit ? false

Reference: https://docs.oracle.com/javase/7/docs/api/java/lang/Character.html#isLetterOrDigit(char)

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4