20 * The array buffer into which the elements of the ArrayList are stored. 21 * The capacity of the ArrayList is the length of this array buffer. Any 22 * empty ArrayList with elementData == DEFAULTCAPACITY_EMPTY_ELEMENTDATA 23 * will be expanded to DEFAULT_CAPACITY when the first element ...
Object数组 /** * The array buffer into which the elements of the ArrayList are stored. * The capacity of the ArrayList is the length of this array buffer. Any * empty ArrayList with elementData == DEFAULTCAPACITY_EMPTY_ELEMENTDATA * will be expanded to DEFAULT_CAPACITY when the first element...
public static <E> ArrayList<E> newArrayList() { return new ArrayList();}内容是差不多的,唯一的好处就是可以少写泛型的部分。这个方法有着丰富的重载:Lists.newArrayList(E... elements)Lists.newArrayList(Iterable<? extends E> elements)Lists.newArrayList(Iterator<? extends E> elements)...
removeAllElements():从该向量中删除所有组件,并将其大小设置为零(该方法的功能与clear()方法相同(它是List接口的一部分))。Arraylist clear():从列表中删除所有元素,返回列表将为空(之前引用的地址都被清空)。new arraylist():初始化List,得到一个新的空List(之前引用的地址不会被清空)。
第一个,removeAllElements()从此向量中移除全部组件,并将其大小设置为零。 此方法的功能与 clear() 方法的功能完全相同(后者是 List 接口的一部分)。第二个,两种方法都是清空ArrayList,在原理上相当不同。而且要注意的是,当ArrayList对象被声明为final时,用clear()可以清空Arraylist,但是不能用...
ArrayList,在Java中非常常用的数据结构,“可变长的数组”,谁不喜欢呢。要知道,Java本身是不支持动态数组的。 (C++相关知识参考 blog.csdn.net/bzhxuexi/) 第一部分,成员变量: private static final long serialVersionUID = 8683452581122892189L; private static final int DEFAULT_CAPACITY = 10; private static fi...
The new –v switch to "!do" now makes it trivial. Figure 5 shows a simple string array output. I've noticed that the –v switch will only dump out actual reference objects and will not display arrays with value elements.Figure 5 Dumping an Array with SOSCopy ...
ArrayList():ensureCapacity方法计算出来的minCapacity是10 ArrayList(0):ensureCapacity方法计算出来的minCapacity是0 /** * Increases the capacity to ensure that it can hold at least the * number of elements specified by the minimum capacity argument. ...
Arrays.asList(array) creates a List wrapper on the underlying array and returns a List of type java.util.Arrays.ArrayList which is different from java.util.ArrayList. It gives a list view for an array, and no elements are physically copied to the created List. // Defining String Array Str...
注释中倒是说明了返回的是个固定大小的List,确是用ArrayList实现的,当liuyh17211在追踪进ArrayList的时候真相大白了,原来这个ArrayList不是util包中的ArrayList,而只是Arrays类的一个继承了AbstractList内部类,所有代码如下: /** * @serial include*/privatestaticclassArrayList<E> extends AbstractList<E>implements Ra...