Computer Applications
Define a class to accept the gmail id and check for its validity.
A gmail id is valid only if it has:
→ @
→ .(dot)
→ gmail
→ com
Example: icse2024@gmail.com is a valid gmail id
Answer
import java.util.Scanner;
public class KboatValidateGmail
{
public static void main(String args[])
{
Scanner in = new Scanner(System.in);
System.out.print("Enter a Gmail ID: ");
String gmailId = in.nextLine();
int len = gmailId.length();
if (gmailId.endsWith("@gmail.com")
&& gmailId.indexOf('@') == len - 10)
{
System.out.println(gmailId + " is a valid Gmail ID.");
}
else
{
System.out.println(gmailId + " is NOT a valid Gmail ID.");
}
}
}Variable Description Table
Program Explanation
Output
Related Questions
Define a class to accept a number from user and check if it is an EvenPal number or not.
(The number is said to be EvenPal number when number is palindrome number (a number is palindrome if it is equal to its reverse) and sum of its digits is an even number.)
Example: 121 – is a palindrome number
Sum of the digits – 1+2+1 = 4 which is an even numberDefine a class to accept values into an integer array of order 4 x 4 and check whether it is a DIAGONAL array or not. An array is DIAGONAL if the sum of the left diagonal elements equals the sum of the right diagonal elements. Print the appropriate message.
Example:
3 4 2 5
2 5 2 3
5 3 2 7
1 3 7 1Sum of the left diagonal element = 3 + 5 + 2 + 1 = 11
Sum of the right diagonal element = 5 + 2 + 3 + 1 = 11
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110061, 110001, 110029, 110023, 110055, 110006, 110019, 110033