eclipse 公开申明里，查父类，看不到方法里的具体操作，怎么办？

Question

集合框架里面添加元素add,   先查ADD里面的具体方法，但是跟进后，只看到黑字，怎么才能看到具体操作呢？

public interface Set<E> extends Collection<E> {

下面的全是注释

本来方法下面应该有具体操作 return map.put(e,present)==null;

    /**
     * Adds the specified object to this set. The set is not modified if it
     * already contains the object.
     *
     * @param object
     *            the object to add.
     * @return {@code true} if this set is modified, {@code false} otherwise.
     * @throws UnsupportedOperationException
     *             when adding to this set is not supported.
     * @throws ClassCastException
     *             when the class of the object is inappropriate for this set.
     * @throws IllegalArgumentException
     *             when the object cannot be added to this set.
     */

Answer 1

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