I have checked the program, the code is working on one system but when I migrate this file to my other system I get the below error, I want to know why this is happening and how could I troubleshoot this issue? My credentials are correct
package javaapplication6;
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;
class Mailer{
public static void send(String from,String password,String to,String sub,String msg){
//Get properties object
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");
//get Session
Session session = Session.getDefaultInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("XXXX@gmail.com","XXXXXXXXX");
}
});
//compose message
try {
MimeMessage message = new MimeMessage(session);
message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
message.setSubject(sub);
message.setText(msg);
//send message
Transport.send(message);
System.out.println("message sent successfully");
} catch (MessagingException e) {throw new RuntimeException(e);}
}
}
public class SendEmail{
public static void main(String[] args) {
//from,password,to,subject,message
Mailer.send("XXXX@gmail.com","XXXXXXXXX","itkrishcommerce@gmail.com","hello javatpoint","How r u?");
//change from, password and to
}
}
The exception I am getting:
Exception in thread "main" java.lang.RuntimeException: javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 465;
nested exception is: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at javaapplication6.Mailer.send(SendEmail.java:32) at javaapplication6.SendEmail.main(SendEmail.java:39)
Caused by: javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 465; nested exception is:
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
