How to write Javadoc of properties?

You can include private members while generating Javadocs (using -private) and then use @link to link to that fields property.

public class SomeDomainClass {
    /**
     * The name of bla bla bla
     */
    private String name;

    /**
     * {@link SomeDomainClass#name}
     */
    public String getName() {
        return name;
    }
}

Alternatively, if you do not want to generate the Javadoc for all private members, you can have a convention to document all getters and use @link on setters.

public class SomeDomainClass {
    private String name;

    /**
     * The name of bla bla bla
     */
    public String getName() {
        return name;
    }

    /**
     * {@link SomeDomainClass#getName}
     */
    public void setName(String name) {
        this.name = name;
    }
}