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Bean validation: Email: validate email

If you annotate @Email annotation on top of CharSequence, then the CharSequence should be a well-formed email address.

 

Example

@Email

public String emailId;

 

What are the supported types?

You can apply this annotation on any CharSequence type.

 

Where can I apply this annotation?

a.   METHOD, F

b.   IELD,

c.    ANNOTATION_TYPE,

d.   CONSTRUCTOR,

e.   PARAMETER,

f.     TYPE_USE

 

Find the below working application.

 

Employee.java

package com.sample.model;

import javax.validation.constraints.Email;

public class Employee {

private int id;

private String name;

@Email
public String emailId;

public Employee(int id, String name, String emailId) {
this.id = id;
this.name = name;
this.emailId = emailId;
}

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getEmailId() {
return emailId;
}

public void setEmailId(String emailId) {
this.emailId = emailId;
}

}

 

Test.java

package com.sample.test;

import java.util.Set;

import javax.validation.*;
import javax.validation.ValidatorFactory;

import com.sample.model.Employee;

public class Test {
private static ValidatorFactory validatorFactory = Validation.buildDefaultValidatorFactory();
private static Validator validator = validatorFactory.getValidator();

private static void validateBean(Employee emp) {
System.out.println("************************************");
Set> validationErrors = validator.validate(emp);

if (validationErrors.size() == 0) {
System.out.println("No validation errors....");
}

for (ConstraintViolation violation : validationErrors) {
System.out.println(violation.getPropertyPath() + "," + violation.getMessage());
}
System.out.println("");
}

public static void main(String args[]) {

Employee emp1 = new Employee(1, "Krishna", "AA");
System.out.println("Validation errors on bean emp1");
validateBean(emp1);

Employee emp2 = new Employee(2, "Siva", "[email protected]");
System.out.println("Validation errors on bean emp2");
validateBean(emp2);
}
}

 

Output

Validation errors on bean emp1
************************************
emailId,must be a well-formed email address

Validation errors on bean emp2
************************************
No validation errors....

 

 

 

 

  

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