Answer:
To check if the email address is correct it should have only one "@" symbol, we have to split the input string by this symbol. The code in java to achieve this is the following:
class Main {
public static void main(String[] args) {
String email = "[email protected]";
String[] email_split = email.split("@");
long count_a = email.chars().filter(ch -> ch == '@').count();
if(count_a == 1){
System.out.println("User name: "+email_split[0]);
System.out.println("Domain name: "+email_split[1]);
}else{
System.out.println("There is no valid email address.");
}
}
}
Explanation:
The explanation of the code is given below:
class Main {
public static void main(String[] args) {
String email = "[email protected]"; //input string to evaluate if is valid email
long count_a = email.chars().filter(ch -> ch == '@').count(); //Count how many times the symbol @ appears
if(count_a == 1){ //A valid email only contains one at
String[] email_split = email.split("@"); //separate the values using the at in an array
System.out.println("User name: "+email_split[0]); //the first element is the username
System.out.println("Domain name: "+email_split[1]); //the second element is the domain name
}else{
System.out.println("There is no valid email address."); //If there isn´t an at or are more than one then display a message saying the email is not valid
}
}
}
