vector和arraylist

vector和arraylist 区别

vector 和 arrayList 都是对一段数组进行操作, 都继承了AbstractList

vector 实现的都是线程安全的

• public synchronized E get(int index)
• public synchronized E set(int index, E element)
• public synchronized boolean add(E e)
• public synchronized E remove(int index)

ArrayList实现的是非线程安全

• public E get(int index)
• public E set(int index, E element)
• public boolean add(E e)
• public E remove(int index)