http://download.java.net/java/jdk9/docs/technotes/guides/security/jsse/JSSERefGuide.html

the guide contains "<Enter your password here>" which is not properly escaped so this text is not displayed at all.

See lines 5980 - 5984 for jdk9 b152

    % <b>keytool -genkeypair -alias duke -keyalg RSA -validity 7 -keystore keystore </b>
    
    Enter keystore password: <i><Enter your password here></i>
    What is your first and last name?
    [Unknown]: <b>Duke</b>