List
ArrayList
构造函数
public ArrayList(int initialCapacity) {
if (initialCapacity > 0) {
this.elementData = new Object[initialCapacity];
} else {
if (initialCapacity != 0) {
throw new IllegalArgumentException("Illegal Capacity: " + initialCapacity);
}
this.elementData = EMPTY_ELEMENTDATA;
}
}
public ArrayList() {
this.elementData = DEFAULTCAPACITY_EMPTY_ELEMENTDATA;
}add 方法
序列化
ConcurrentModificationException 出现原因
modCount
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