如何在Java中用自己的数据创建vcard？

<dependency>
    <groupId>com.googlecode.ez-vcard</groupId>
    <artifactId>ez-vcard</artifactId>
    <version>0.10.4</version>
</dependency>

import ezvcard.VCard;
import ezvcard.property.StructuredName;
import ezvcard.property.Telephone;
import ezvcard.property.Email;

VCard vcard = new VCard();
vcard.setStructuredName(new StructuredName().setFamily("Smith").setGiven("John"));
vcard.addTelephoneNumber(new Telephone("+1234567890"));
vcard.addEmail(new Email("john.smith@example.com"));

import ezvcard.io.TextWriter;

TextWriter writer = new TextWriter(vcard);
writer.write(new File("john_smith.vcf"));
writer.close();