import com.sun.tools.doclint.HtmlTag.AttrKind; //导入依赖的package包/类
private void validateHtml4Attrs(AttributeTree tree, Name name, AttrKind k) {
    switch (k) {
        case ALL:
        case HTML4:
            break;

        case INVALID:
            env.messages.error(HTML, tree, "dc.attr.unknown", name);
            break;

        case OBSOLETE:
            env.messages.warning(ACCESSIBILITY, tree, "dc.attr.obsolete", name);
            break;

        case USE_CSS:
            env.messages.warning(ACCESSIBILITY, tree, "dc.attr.obsolete.use.css", name);
            break;

        case HTML5:
            env.messages.error(HTML, tree, "dc.attr.not.supported.html4", name);
            break;
    }
}
 

import com.sun.tools.doclint.HtmlTag.AttrKind; //导入依赖的package包/类
private void validateHtml5Attrs(AttributeTree tree, Name name, AttrKind k) {
    switch (k) {
        case ALL:
        case HTML5:
            break;

        case INVALID:
        case OBSOLETE:
        case USE_CSS:
        case HTML4:
            env.messages.error(HTML, tree, "dc.attr.not.supported.html5", name);
            break;
    }
}