The package.html files should be converted to package-info.java.

For the packages:

package com.sun.rowset.providers;
package java.rmi;
package java.rmi.activation;
package java.rmi.dgc;
package java.rmi.registry;
package java.rmi.server;
package java.sql;
package java.util.logging;
package java.util.prefs;
package javax.rmi.ssl;
package javax.smartcardio;
package javax.sql;
package javax.sql.rowset.serial;