publicclassStudent{privateStringname;privateintage;publicStudent(Stringname,intage){this.name=name;this.age=age;}publicintgetAge(){returnage;}publicStringgetName(){returnname;}} 拓展:外部现在只能通过调用我定义的方法来获取成员属性
这样clone出来的Stack对象与原Stack对象却使用的是同一个elements引用,但是size属性却是相互独立的。这样很快就会发现这两个Stack对象已经无法正常工作。对于这种情况,可以通过深拷贝来避免这种情况的发生,例如上面的Stack类,虽简单的做法就是在elements数组中递归地调用clone:...
容器相关的操作及其源码分析 说明 1、本文是基于JDK 7 分析的。JDK 8 待我工作了得好好研究下。Lambda、Stream。 2、本文会贴出大量的官方注释文档,强迫自己...
* Removes the element at the specified position in this list. Shifts any * subsequent elements to the left (subtracts one from their indices). * Returns the element that was removed from the list. * * @param index the index of the element to be removed * @return the element previously ...
接下来看remove()的另一个重载方法,来自List接口的,移除指定位置的元素。 源码分析 列出该方法及其内部调用的方法如下: /** * Removes the element at the specified position in this list. Shifts any * subsequent elements to the left (subtracts one from their indices). ...
position in this list. Shifts any * subsequent elements to the left (subtracts one from ...
Stack.java:19: incompatible types found: Object, required: E E result = elements[--size]; ^ You can change this error into a warning by casting the element retrieved from the array to E, but you will get a warning: 通过将从数组中检索到的元素转换为 E,可以将此错误转换为警告。我们对警...
Shifts any subsequent elements to the left (subtracts one from their indices). Returns the element that was removed from the list. Parameters: index - the index of the element to be removed Returns: the element previously at the specified position Throws: UnsupportedOperationException - if the ...
LinkedList并非直接继承自AbstractList,而是继承自AbstractSequentList,set(int index, E e)方法是在AbstractSequentList中实现的,这个方法中并没有之前提到的node(int index)方法,但是有listIterator()方法,所以要么不要在父类中实现set(),要么得使用父类中存在的方法来实现,尽管listIterator()方法是抽象的。
Shifts any * subsequent elements to the left (subtracts one from their indices). * Returns the element that was removed from the list. * * @param index the index of the element to be removed * @return the element previously at the specified position * @throws IndexOutOfBoundsException {...