返回信息流public boolean removeAll(Collection<?> c) {
Objects.requireNonNull(c);
return batchRemove(c, false);
}
private boolean batchRemove(Collection<?> c, boolean complement) {
final Object[] elementData = this.elementData;
int r = 0, w = 0;
boolean modified = false;
try {
for (; r < size; r++)
if (c.contains(elementData[r]) == complement)
elementData[w++] = elementData[r];
} finally {
// Preserve behavioral compatibility with AbstractCollection,
// even if c.contains() throws.
if (r != size) {
System.arraycopy(elementData, r,
elementData, w,
size - r);
w += size - r;
}
if (w != size) {
// clear to let GC do its work
for (int i = w; i < size; i++)
elementData[i] = null;
modCount += size - w;
size = w;
modified = true;
}
}
return modified;
}
请问一下在什么情况下，batchRemove()方法中的finally块会执行，contains()方法什么情况下会抛异常，能举个例子吗，谢谢
这是一条镜像帖。来源：北邮人论坛 / java / #53561同步于 2016/10/21
Java机器人发帖
Collection的contains()方法抛异常的问题
ljq661
2016/10/21镜像同步0 回复
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