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 入训考试题库
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2008-5-21
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目录................................................................................................................................................................1
第一部分 Jsp&servlet..................................................................................................................................6
三个  区别，用法
什么是 
 调用方式几种方法
与 的区别是：
 请求和  请求区别
 生命周期 （看 ）
、 和  的区别？
 构架模型
 隐含变量（也叫做内置对象、内建对象等等）这些东西在  当中，不用声明直接使用。
 四大共享范围
!"##如何理解 !"（看 ）
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 入训考试题库
 生命周期（非常重要，还有  的生命周期也超级重要） 
$%& 和 &'&( 区别 
从 )$(* 或 +(, 是通过什么模式取得实例的？如果要取得多个实例在配制文件中要
怎样做映射
- 有哪些动作.作用分别是什么.
、 的特点见 
、如何设置/取得 )中的属性值？
、) 的使用：
 、实现页面跳转的两种方法：
、(0& 指令标签1静态引用，看看 2
、页面之间的值传递：
、获取 345678&1269；
、使用  对象
、什么是 4
、什么是  容器4
、什么是  页面
、 标签
 中如何（第 、 章）
 、描述  的生命周期谁来控制  的生命周期， 生命周期在 :: 规范中是如何来定义
、如何创建 ';03(< 对象=如何将请求转发给其它的 %> 资源（包含其它的 %> 资源），描述如
何利用 ;0 来存状态，以及与其它保存状态方法有什么区别
、如何在 %>, 中配置  定义1强调再强调2
、获得 ?8 对象
、如何获得 , 对象
、通过超链接来访问 
 、 说 明 如 下 的 %> 的 资 源 应 该 放 在 %> 容 器 中 的 什 么 目 录 下 ， 静 态 页 面  、 
(、%>,、8>、+'$、-( 以及需要保护的资源文件
、描述 ;0( 的区别，创建监听器类来监听每个 ( 的生命周期
、 的内置对象及方法。（与前面题相同）
重定向和请求分派区别
第二部分 JDBC..........................................................................................................................................19
3) 连接数据库  步
((0（@） ?0&和 ((0（&） ?0&之间的区别。 
 假设现在有表 *>，表中有三个字段：&1数值型2、（字符型）、8（数值型）写出 AB
语句完成如下功能：在表中查出年龄大于  ，且名字以“王”开头并在名字当中含有6的记录，并且按照年
龄的倒叙排列出来（年龄大的在前面）。 
创建 CD!:' 表，字段为：3：（非空，主键） >8，E+!:：（非空） (<，+:： 类
型 ； 创 建 D'3:' 表 ， 字 段 为 ： 3 ： （ 非 空 ， 主 键 ， ） >8 ， D'3:'FEC!):' ： （ 非
空）(<，':：&0>，CD!:'F3：（外键） >8，设置级连删除；
使用左外连接查询，D'3:'和 CD!:'表
简述数据库事务的生命周期？（可画流程图）
&?>G0(>>，&> 的区别
第三部分 Struts..........................................................................................................................................23
简述 0 框架的初始化流程。


 入训考试题库
简述 0 框架响应客户请求的工作流程
0 框架的数据验证可分为几种类型？
简述 $) 的表单验证流程。
 在 0 配置文件中 ( 元素包含哪些属性和子元素？
简单叙述 +($) 的作用
叙述 +($ 执行步骤
在下面的标签中哪些是 0 标签
、$) 的作用
 、$%& 与 >H$%& 的区别
问题：在 0 应用的视图中包含哪些组件.
 问题：在 0 应用的控制器中包含哪些组件.
问题：在 0 应用的模型中包含哪些组件.
、问题：以下哪些说法是正确的？
+($) 对象是由谁创建的？
 、问题4以下代码定义了一个变量，如何输出这个变量的值.
、问题4把静态文本放在 '0()0&（消息资源文件）中，而不是直接在  文件中包含这些静态文
本，有什么优点.
 在 0 配置文件中 ( 元素包含哪些属性和子元素？
第四部分 UML 及其他（与我无关）.......................................................................................................29
．名词解释
、如果说有两个类 一个 0&=一个 !8 如何在配置文件中写二者一对一的关系并设置及联关系（在
删除学生的同时与之对应的信息也删掉）？（写出一种即可）应用 C!B 画出 0& 和 !8 的类图和
关系。 
什么是 C!B，包括哪些？
解释下面关于 :: 的名词
什么是 I> 容器.
什么是 I>(.
第五部分 选择题，编程题集锦................................................................................................................33
一、选择题（每题  分）
二、编程题（、 题各  分， 题   分）
、利用异常处理机制的方法来制作一个代码程序段。输入“   J时，打印“亲爱的   ，您好”；输
入其他字符串时，打印“对不起，请下次进入”，然后程序结束
、使用同步函数实现卖    张票。要求写两个类（主函数类：!=线程类：<&）=线程类
实现 '0> 接口。
． 编程=打印昨天的当前时刻
文件读写=实现一个计数器
指出下面程序的运行结果4
写一个 8 模式的例子 
删除表的重复记录 
第六部分 面试和笔试大全........................................................................................................................40
、8 是最基本的数据类型吗. 
、和 8有什么区别
、8和 8)0?? 的区别
、运行时异常与一般异常有何异同？


 入训考试题库
、说出  的生命周期，并说出  和  的区别。
、说出 +*B="(=B&B 的存储性能和特性
、(和 ( 的区别。
、G和GG的区别。
、K<! 和 K<> 的区别。
 、?=?*=?L 的区别。
、12和 %12有什么区别.
、D& 和 D& 的区别。D&& 的方法是否可以改变返回值的类型.
、 和 ,( 有什么区别.
、同步和异步有何异同，在什么情况下分别使用他们？举例说明。
、>(( 和 ?( 有什么区别.
、< 和 ( 有什么区别。
、?%&和 &( 的区别
、(E&和  的不同。
、 中动态 EBC3: 与静态 EBC3: 的区别？
 、什么时候用 。
、 是什么.为什么要有 .
、<7M7NM有什么错.<7MN7M有什么错.
、!<0&12等於多少.!<0&1H2等於多少.
、87%81O,*LO2M创建了几个 8D>-(.
、设计  个线程，其中两个线程每次对 - 增加 ，另外两个线程对 - 每次减少 。写出程序。
、 有没有 8.
、应用服务器有那些？
、给我一个你最常见到的 0,(。
、接口是否可继承接口.抽象类是否可实现12接口.抽象类是否可继承实体类1(((2. 
 、B==! 是否继承自 ( 接口.
、说出数据连接池的工作机制是什么.
、>( 的 <& 是否可同时是 (=是否可同时是 ，是否可同时是 *(<L&.
、数组有没有 8<12这个方法.8 有没有 8<12这个方法？
、 里的元素是不能重复的，那么用什么方法来区分重复与否呢.是用77还是 ;012.它们有何区别.

、构造器 0( 是否可被 &.
、是否可以继承 8 类.
、%(< 是否能作用在 >* 上，是否能作用在 8 上，是否能作用在 8 上.
、*PQ里有一个 0 语句，那么紧跟在这个 * 后的 ?*PQ里的 (& 会不会被执行，什么时候被执
行，在 0 前还是后.
、编程题4用最有效率的方法算出  乘以  等於几.
 、两个对象值相同1,;01*27702，但却可有不同的 <<(&，这句话对不对.
、当一个对象被当作参数传递到一个方法后，此方法可改变这个对象的属性，并可返回变化后的结果，
那么这里到底是值传递还是引用传递. 
、当一个线程进入一个对象的一个 *(<L& 方法后，其它线程是否可进入此对象的其它方法. 
、编程题4写一个 8 出来。 
、 的接口和 NN的虚类的相同和不同处。
、 中的异常处理机制的简单原理和应用。


 入训考试题库
、垃圾回收的优点和原理。并考虑  种回收机制。
、请说出你所知道的线程同步的方法。
、你所知道的集合类都有哪些？主要方法？
、描述一下 "! 加载 ( 文件的原理机制.
 、(< 型变量中能不能存贮一个中文汉字.为什么.
、多线程有几种实现方法=都是什么.同步有几种实现方法=都是什么.
、 的内置对象及方法。
、线程的基本概念、线程的基本状态以及状态之间的关系
、 的常用指令
、什么情况下调用 &12和 &12？
、 的生命周期
、如何现实  的单线程模式
、页面间对象传递的方法
、 和  有哪些相同点和不同点，他们之间的联系是什么？
 、四种会话跟踪技术
、';0 对象的主要方法：
、:: 是技术还是平台还是框架？
、我们在 %> 应用开发过程中经常遇到输出某种编码的字符，如 H 等，如何输出一个某种编码的
字符串？
、简述逻辑操作1G=R=S2与条件操作1GG=RR2的区别。
、T!B 文档定义有几种形式？它们之间有何本质区别？解析 T!B 文档有哪几种方式？
、简述 *(<L& 和 -0((0(B( 的异同 ？
、D')+ 是什么.用途是什么.
、说说你所熟悉或听说过的 - 中的几种常用模式.及对设计模式的一些看法
、 执行时一般实现哪几个方法？
 、- 常用的设计模式？说明工厂模式。
、排序都有哪几种方法？请列举。用 +"+ 实现一个快速排序。
、请对以下在 :: 中常用的名词进行解释1或简单描述2
、+"+ 语言如何进行异常处理，关键字：<%=<%=*=((<=?* 分别代表什么意义？在 * 块中可
以抛出异常吗？
、一个O-O源文件中是否可以包括多个类（不是内部类）？有什么限制？
、!" 的各个部分都有那些技术来实现.如何实现.
、- 中有几种方法可以实现一个线程？用什么关键字修饰同步方法.12和 0&12方法为何不推荐
使用？
、- 中有几种类型的流？3U 为每种类型的流提供了一些抽象类以供继承，请说出他们分别是哪些类？
 
、- 中会存在内存泄漏吗，请简单描述。 
、- 中实现多态的机制是什么？ 
 、垃圾回收器的基本原理是什么？垃圾回收器可以马上回收内存吗？有什么办法主动通知虚拟机进行垃
圾回收？ 
、静态变量和实例变量的区别？ 
、什么是 - 序列化，如何实现 - 序列化？
、是否可以从一个 ( 方法内部发出对非 ( 方法的调用？
、写 (12方法时，通常都有一行代码，是什么？
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