小编Rit*_*esh的帖子

这可能是一个愚蠢的问题,但我无法理解为什么下面的编译失败了.

我的班级层次结构

Dao.java

public interface Dao<E extends Entity, S extends SearchCriteria> {
    <E> E create(E e) throws Exception;
}

这个Dao有一个通用的实现

DaoImpl.java

public abstract class DaoImpl<E extends Entity, S extends SearchCriteria> implements Dao<E, S> {
    @Override
    public <E> E create(E e) throws Exception {
        throw new UnsupportedOperationException("this operation is not supported");
    }
}

然后有专门的实施

ProcessDaoImpl.java

public class ProcessDaoImpl extends DaoImpl<Process, WildcardSearchCriteria> {
    @Override // this is where compilation is failing, I get the error that create doesn't override a superclass method …