／／源码
public HashSet() {
map = new HashMap<>();
}
public boolean add(E e) {
return map.put(e, PRESENT)==null;
}
标签：boolean present body == set public hashmap shm add
／／源码
public HashSet() {
map = new HashMap<>();
}
public boolean add(E e) {
return map.put(e, PRESENT)==null;
}
标签：boolean present body == set public hashmap shm add
原文地址：http://www.cnblogs.com/duanR/p/8058143.html
