Commons Collections僥楼永芝?屈? - 園殻秘壇利
作者 佚名技术
来源 NET编程
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发布时间 2012-06-16
}
}
if (array.length > size) {
array[size] = null;//舜僅謹噫議腎了
}
return array;
}
public Set uniqueSet() {
if (uniqueSet == null) {
uniqueSet = UnmodifiableSet.decorate(map.keySet());
}
return uniqueSet;
}
protected void doWriteObject(ObjectOutputStream out) throws IOException {
out.writeInt(map.size());
for (Iterator it = map.entrySet().iterator(); it.hasNext();) {
Map.Entry entry = (Map.Entry) it.next();
out.writeObject(entry.getKey());
out.writeInt(((MutableInteger) entry.getValue()).value);
}
}
protected void doReadObject(Map map, ObjectInputStream in) throws IOException, ClassNotFoundException {
this.map = map;
int entrySize = in.readInt();
for (int i = 0; i < entrySize; i++) {
Object obj = in.readObject();
int count = in.readInt();
map.put(obj, new MutableInteger(count));
size += count;
}
}
public boolean equals(Object object) {
if (object == this) {
return true;
}
if (object instanceof Bag == false) {
return false;
}
Bag other = (Bag) object;
if (other.size() != size()) {
return false;
}
for (Iterator it = map.keySet().iterator(); it.hasNext();) {
Object element = it.next();
if (other.getCount(element) != getCount(element)) {
return false;
}
}
return true;
}
public int hashCode() {
int total = 0;
for (Iterator it = map.entrySet().iterator(); it.hasNext();) {
Map.Entry entry = (Map.Entry) it.next();
Object element = entry.getKey();
MutableInteger count = (MutableInteger) entry.getValue();
total += (element == null ? 0 : element.hashCode()) ^ count.value;
}
return total;
}
public String toString() {
if (size() == 0) {
return "[]";
}
StringBuffer buf = new StringBuffer();
buf.append(''['');
Iterator it = uniqueSet().iterator();
while (it.hasNext()) {
Object current = it.next();
int count = getCount(current);
buf.append(count);
buf.append('':'');
buf.append(current);
if (it.hasNext()) {
buf.append('','');
}
}
buf.append('']'');
return buf.toString();
}
}
Commons Collections学习笔记（二）(2)时间:2011-07-20 博客园 Phinecospublic class HashBag extends AbstractMapBag implements Bag, Serializable
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