Java Program to Check Alphabet
This post covers a program in Java that checks whether a character entered by user at run-time of the program, is an alphabet
or not.
Note - All characters from either A-Z or a-z are alphabets.
Check Alphabet using if-else in Java
The question is, write a Java program to check whether a character is an alphabet or not using if-else. The program given
below is its answer:
import java.util.Scanner;
public class CodesCracker
{
public static void main(String[] args)
{
char ch;
Scanner s = new Scanner(System.in);
System.out.print("Enter a Character: ");
ch = s.next().charAt(0);
if((ch>='A' && ch<='z') || (ch>='a' && ch<='z'))
{
System.out.println("\nIt is an Alphabet.");
}
else
{
System.out.println("\nIt is not an Alphabet.");
}
}
}
Here is its sample run with user input c as character to check whether it is an alphabet or not:
The above program can also be written as:
import java.util.Scanner;
public class CodesCracker
{
public static void main(String[] args)
{
Scanner s = new Scanner(System.in);
System.out.print("Enter a Character: ");
char ch = s.next().charAt(0);
if((ch>='A' && ch<='z') || (ch>='a' && ch<='z'))
System.out.println("\nThe character \'" +ch+ "\' is an Alphabet.");
else
System.out.println("\nThe character \'" +ch+ "\' is not an Alphabet.");
}
}
The sample run with user input 4 is shown in the snapshot given below:
Check Alphabet or Digit in Java
This program checks whether a given character is an alphabet, a digit, or any other character.
import java.util.Scanner;
public class CodesCracker
{
public static void main(String[] args)
{
Scanner s = new Scanner(System.in);
System.out.print("Enter a Character: ");
char ch = s.next().charAt(0);
if((ch>='A' && ch<='z') || (ch>='a' && ch<='z'))
System.out.println("\nThe character \'" +ch+ "\' is an Alphabet.");
else if(ch>='0' && ch<='9')
System.out.println("\nThe character \'" +ch+ "\' is a Digit.");
else
System.out.println("\nThe character \'" +ch+ "\' is neither an Alphabet nor a Digit.");
}
}
The sample run with same user input as of previous program's sample run is:
Same Program in Other Languages
Java Online Test
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