Validate Email Address with Regular Expression in Java

Run Application

Create new java file named Main.java. This file use Regular Expression check validate email address as below:

package regular_expression;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {

	private static boolean isValid(String email) {
		String emailPattern = "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
		Pattern pattern = Pattern.compile(emailPattern, Pattern.CASE_INSENSITIVE);
		Matcher matcher = pattern.matcher(email);
		return matcher.matches();
	}

	public static void main(String[] args) {

		String email1 = "abd@gmail";
		boolean result1 = isValid(email1);
		System.out.println("Result 1: " + result1);

		String email2 = "abd@gmail.com";
		boolean result2 = isValid(email2);
		System.out.println("Result 2: " + result2);

	}

}

Output

Result 1: false
Result 2: true