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in Technique[技术] by (71.8m points)

关于java集合源码里面final的问题

private void linkFirst(E e) {
    final Node<E> f = first;
    final Node<E> newNode = new Node<>(null, e, f);
    first = newNode;
    if (f == null)
        last = newNode;
    else
 f.prev = newNode;
    size++;
    modCount++;
}

LinkedList源码里面方法的局部变量为什么都会加上final?


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by (71.8m points)

局部变量加 final 的原因有很多,你这里的主要原因是避免了被重新赋值。


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