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 ...
一、LinkList类概述 LinkedList同时实现了List接口和Deque接口,也就是说它既可以看作一个顺序容器,又可以看作一个队列(Queue),同时又可以看作一个栈(Stack)。这样看来,LinkedList简直就是个全能冠军。当你需要使用栈或者队列时,可以考虑使用LinkedList,一方面是因为Java官方已经声明不建议使用Stack类,更遗憾的是,Java...
left (subtracts one from their indices).* Returns the element that was removed from the list.*...
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。
WildCard.java:13: error: incompatible types: String cannot be converted to CAP#1 c.add("verboten"); ^ where CAP#1 is a fresh type-variable: CAP#1 extends Object from capture of ? 为便于参考,本条目中介绍的术语(以及后面将要介绍的一些术语)总结如下: 术语例子条目 参数化类型 List<String> 第...
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 {...