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首页"韩顺平Java零基础完整笔记word文档详细入门指南"
韩顺平的《循序渐进学Java零基础》是一套针对Java编程新手的完整教程,内容全部由韩顺平老师编写并讲解。这套教程以Word文档形式发布,可以方便用户自行编辑和查阅学习。
第一章中,教程详细介绍了整个Java学习的内容和结构。包括课程的三个阶段安排,让学习者可以清晰地了解将来所学到的知识和技能。韩顺平老师从基础知识开始,通俗易懂,并循序渐进地引导学生逐渐掌握Java编程的核心概念和技术。
课程的第一阶段主要介绍了Java的基本语法和数据类型,为后续学习打下坚实基础。学生将学习如何编写简单的Java程序,掌握变量、运算符、条件语句、循环结构等基本概念。通过实例和练习,学生能够逐渐提升对Java程序设计的理解和技能。
在第二章中,教程将逐步深入探讨Java中的面向对象编程概念。学生将学习类与对象、继承与多态、封装与继承等重要概念,了解如何通过面向对象的方法设计和组织自己的Java程序。通过实例代码和项目练习,学生可以逐步提高自己的编程水平,掌握面向对象编程的核心思想和技术。
第三章将介绍Java中常用的集合框架和IO流操作。学生将学习集合类的使用方法和常见操作,了解如何使用IO流实现文件读写和数据传输。通过实际案例和练习,学生可以掌握Java中集合和IO操作的重要知识,为进一步学习和实践打下基础。
除了基础知识和技术外,韩顺平还将在课程中介绍一些实用的编程技巧和经验,帮助学生更好地应用所学知识解决实际问题。同时,他还将分享一些Java开发中常见的错误和解决方法,帮助学生避免一些常见的编程陷阱。
总的来说,韩顺平的《循序渐进学Java零基础》是一套全面系统的Java学习教程,适合零基础的新手入门学习。通过该教程,学生可以系统学习Java编程的基础知识和核心技术,掌握面向对象编程思想,提升编程能力和实践经验。韩顺平老师的生动讲解和丰富案例,能够帮助学生更轻松地学习和理解Java编程,为将来的职业发展奠定坚实基础。
韩顺平循序渐进学 Java
零基础
第 II页
12.2
解决方案-异常捕获 .........................................................................................................................................................................................504
12.3
异常介绍 ..........................................................................................................................................................................................................505
12.4
异常体系图一览 ..............................................................................................................................................................................................506
12.4.1
异常体系图 ...............................................................................................................................................................................506
12.4.2
异常体系图的小结 ...................................................................................................................................................................506
12.5
常见的运行时异常 ..........................................................................................................................................................................................507
12.5.1
常见的运行时异常包括 ...........................................................................................................................................................507
12.5.2
常见的运行时异常举例 ...........................................................................................................................................................507
12.6
编译异常...........................................................................................................................................................................................................511
12.6.1 介绍 ...........................................................................................................................................................................................512
12.6.2
常见的编译异常 .......................................................................................................................................................................512
12.6.3
案例说明 ...................................................................................................................................................................................512
12.7
异常课堂练习 ..................................................................................................................................................................................................513
12.8
异常处理 ..........................................................................................................................................................................................................513
12.8.1
基本介绍 ...................................................................................................................................................................................514
12.8.2
异常处理的方式 .......................................................................................................................................................................514
12.8.3 示意图 .......................................................................................................................................................................................514
12.9
TRY-CATCH 异常处理........................................................................................................................................................................................515
12.9.1
try-catch 方式处理异常说明 TryCatch01.java ........................................................................................................................515
12.9.2
try-catch 方式处理异常-快速入门............................................................................................................................................515
12.9.3
try-catch 方式处理异常-注意事项 TryCatchDetail.java.........................................................................................................516
12.9.4
异常处理课堂练习 ...................................................................................................................................................................521
12.9.5
try-catch-finally 执行顺序小结 .................................................................................................................................................523
12.9.6
课后练习题: TryCatchExercise04.java .................................................................................................................................523
12.10
THROWS 异常处理...........................................................................................................................................................................................525
12.10.1
基本介绍 .................................................................................................................................................................................525
12.10.2
快速入门案例 .........................................................................................................................................................................525
12.10.3
注意事项和使用细节 ThrowsDetail.java .............................................................................................................................525
12.11
自定义异常.....................................................................................................................................................................................................528
12.11.1
基本概念 .................................................................................................................................................................................528
12.11.2
自定义异常的步骤 .................................................................................................................................................................528
12.11.3
自定义异常的应用实例 CustomException.java...................................................................................................................528
12.12
THROW 和 THROWS 的区别...........................................................................................................................................................................530
12.12.1 一览表 .....................................................................................................................................................................................530
12.12.2 测试题-下面的测试输出什么 ThrowException.java 2min................................................................................................530
12.13
本章作业 ........................................................................................................................................................................................................530
第 13 章 常用类 .........................................................................................................................................................................................................533
13.1 包装类...............................................................................................................................................................................................................533
13.1.1
包装类的分类 WrapperType.java .........................................................................................................................................533
韩顺平循序渐进学 Java
零基础
第 II页
13.1.2
包装类和基本数据的转换 .......................................................................................................................................................533
13.1.3
案例演示 Integer01.java ..........................................................................................................................................................533
13.1.4
课堂测试题 WrapperExercise01.java 2min ............................................................................................................................535
13.1.5
包装类型和 String 类型的相互转换 WrapperVSString.java.................................................................................................535
13.1.6
Integer 类和 Character 类的常用方法 ......................................................................................................................................536
13.1.7
Integer 类面试题 1 WrapperExercise02.java ............................................................................................................................537
13.1.8
Intege 类面试题总结 .................................................................................................................................................................539
13.2
STRING 类 ..........................................................................................................................................................................................................540
13.2.1
String 类的理解和创建对象 .....................................................................................................................................................540
13.2.2
创建 String 对象的两种方式 ...................................................................................................................................................542
13.2.3
两种创建 String 对象的区别 ...................................................................................................................................................542
13.2.4
课堂测试题 StringExercise01.java..........................................................................................................................................543
13.3
字符串的特性 ..................................................................................................................................................................................................546
13.3.1
说明 StringExercise06.java......................................................................................................................................................546
13.3.2 面试题 .......................................................................................................................................................................................547
13.4
STRING 类的常见方法 ......................................................................................................................................................................................549
13.4.1 说明 ...........................................................................................................................................................................................549
13.4.2 String 类的常见方法一览 .........................................................................................................................................................550
13.5
STRINGBUFFER 类 .............................................................................................................................................................................................555
13.5.1
基本介绍 ...................................................................................................................................................................................555
13.5.2
String VS StringBuffer ...............................................................................................................................................................557
13.5.3
String 和 StringBuffer 相互转换 ...............................................................................................................................................557
13.5.4
StringBuffer 类常见方法...........................................................................................................................................................558
13.5.5
StringBuffer 类课堂测试题 1 StringBufferExercise01.java .....................................................................................................560
13.5.6
StringBuffer 类课后练习 2........................................................................................................................................................561
13.6
STRINGBUILDER 类............................................................................................................................................................................................563
13.6.1
基本介绍 ...................................................................................................................................................................................563
13.6.2
StringBuilder 常用方法 .............................................................................................................................................................564
13.6.3
String、StringBuffer 和 StringBuilder 的比较 ........................................................................................................................565
13.6.4
String、StringBuffer 和 StringBuilder 的效率测试 ................................................................................................................565
13.6.5
String、StringBuffer 和 StringBuilder 的选择 ........................................................................................................................567
13.7
MATH 类 ............................................................................................................................................................................................................567
13.7.1
基本介绍 ...................................................................................................................................................................................568
13.7.2
方法一览(均为静态方法) ........................................................................................................................................................568
13.7.3
Math 类常见方法应用案例.......................................................................................................................................................568
13.8
ARRAYS 类.........................................................................................................................................................................................................570
13.8.1
Arrays 类常见方法应用案例 ....................................................................................................................................................570
13.8.2
Arrays 类课堂练习 ....................................................................................................................................................................579
13.9
SYSTEM 类 .........................................................................................................................................................................................................584
13.9.1
System 类常见方法和案例 .......................................................................................................................................................584
韩顺平循序渐进学 Java
零基础
第 II页
13.10
BIGINTEGER 和 BIGDECIMAL 类.....................................................................................................................................................................586
13.10.1
BigInteger 和 BigDecimal 介绍...............................................................................................................................................586
13.10.2
BigInteger 和 BigDecimal 常见方法.......................................................................................................................................587
13.11 日期类.............................................................................................................................................................................................................589
13.11.1
第一代日期类 .........................................................................................................................................................................590
13.11.2
第二代日期类 .........................................................................................................................................................................592
13.11.3
第三代日期类 .........................................................................................................................................................................593
13.11.4
DateTimeFormatter 格式日期类 .............................................................................................................................................596
13.11.5
Instant 时间戳 .........................................................................................................................................................................596
13.11.6
第三代日期类更多方法 .........................................................................................................................................................598
13.12 本章作业.........................................................................................................................................................................................................598
第 14 章 集合 .............................................................................................................................................................................................................600
14.1
集合的理解和好处 ..........................................................................................................................................................................................600
14.1.1 数组 ...........................................................................................................................................................................................600
14.1.2 集合 ...........................................................................................................................................................................................600
14.2
集合的框架体系 ..............................................................................................................................................................................................600
14.3
COLLECTION 接口和常用方法 .........................................................................................................................................................................602
14.3.1
Collection 接口实现类的特点 ..................................................................................................................................................602
14.3.2
Collection 接口遍历元素方式 1-使用 Iterator(迭代器)...........................................................................................................604
14.3.3
Collection 接口遍历对象方式 2-for 循环增强 ........................................................................................................................610
14.3.4
课堂练习 ...................................................................................................................................................................................610
14.4
LIST 接口和常用方法.......................................................................................................................................................................................613
14.4.1
List 接口基本介绍.....................................................................................................................................................................613
14.4.2
List 接口的常用方法.................................................................................................................................................................615
14.4.3
List 接口课堂练习.....................................................................................................................................................................617
14.4.4
List 的三种遍历方式 [ArrayList, LinkedList,Vector] .............................................................................................................619
14.4.5
实现类的课堂练习 2 ................................................................................................................................................................621
14.5
ARRAYLIST 底层结构和源码分析 ...................................................................................................................................................................624
14.5.1
ArrayList 的注意事项................................................................................................................................................................624
14.5.2
ArrayList 的底层操作机制源码分析(重点,难点.) ................................................................................................................624
14.6
VECTOR 底层结构和源码剖析.........................................................................................................................................................................626
14.6.1
Vector 的基本介绍 ....................................................................................................................................................................626
14.6.2
Vector 和 ArrayList 的比较.......................................................................................................................................................629
14.7
LINKEDLIST 底层结构 ......................................................................................................................................................................................630
14.7.1
LinkedList 的全面说明 .............................................................................................................................................................630
14.7.2
LinkedList 的底层操作机制 .....................................................................................................................................................630
14.7.3
LinkedList 的增删改查案例 .....................................................................................................................................................634
14.8
ARRAYLIST 和 LINKEDLIST 比较 ....................................................................................................................................................................639
14.8.1
ArrayList 和 LinkedList 的比较 ................................................................................................................................................639
韩顺平循序渐进学 Java
零基础
第 II页
14.9
SET 接口和常用方法 ........................................................................................................................................................................................639
14.9.1
Set 接口基本介绍......................................................................................................................................................................639
14.9.2
Set 接口的常用方法..................................................................................................................................................................640
14.9.3
Set 接口的遍历方式..................................................................................................................................................................640
14.9.4
Set 接口的常用方法举例..........................................................................................................................................................640
14.10
SET 接口实现类-HASHSET......................................................................................................................................................................................................................642
14.10.1
HashSet 的全面说明................................................................................................................................................................642
14.10.2
HashSet 案例说明....................................................................................................................................................................644
14.10.3
HashSet 底层机制说明............................................................................................................................................................646
14.10.4
HashSet 课堂练习 1.................................................................................................................................................................655
14.10.5
HashSet 课后练习 2.................................................................................................................................................................658
14.11
SET 接口实现类-LINKEDHASHSET.......................................................................................................................................................................................................659
14.11.1
LinkedHashSet 的全面说明.....................................................................................................................................................659
14.11.2
LinkedHashSet 课后练习题 LinkedHashSetExercise.java ....................................................................................................660
14.12
MAP 接口和常用方法.....................................................................................................................................................................................663
14.12.1
Map 接口实现类的特点 [很实用].........................................................................................................................................663
14.12.2
Map 接口常用方法..................................................................................................................................................................666
14.12.3
Map 接口遍历方法..................................................................................................................................................................668
14.12.4
Map 接口课堂练习..................................................................................................................................................................672
14.13
MAP 接口实现类-HASHMAP ..................................................................................................................................................................................................................676
14.13.1
HashMap 小结 .........................................................................................................................................................................676
14.13.2
HashMap 底层机制及源码剖析 .............................................................................................................................................676
14.13.3
HashMap 底层机制及源码剖析 .............................................................................................................................................677
14.14
MAP 接口实现类-HASHTABLE...............................................................................................................................................................................................................683
14.14.1
HashTable 的基本介绍............................................................................................................................................................683
14.14.2
Hashtable 和 HashMap 对比 .................................................................................................................................................684
14.15
MAP 接口实现类-PROPERTIES ...............................................................................................................................................................................................................684
14.15.1
基本介绍 .................................................................................................................................................................................684
14.15.2
基本使用 .................................................................................................................................................................................684
14.16
总结-开发中如何选择集合实现类(记住) ....................................................................................................................................................686
14.17
COLLECTIONS 工具类......................................................................................................................................................................................692
14.17.1
Collections 工具类介绍...........................................................................................................................................................692
14.17.2
排序操作:(均为 static 方法) .............................................................................................................................................692
14.17.3
排序操作:(均为 static 方法) .............................................................................................................................................696
14.17.4
查找、替换 .............................................................................................................................................................................696
14.18
本章作业 ........................................................................................................................................................................................................696
第 15 章 泛型 .............................................................................................................................................................................................................700
15.1
泛型的理解和好处 ..........................................................................................................................................................................................700
15.1.1
看一个需求 ...............................................................................................................................................................................700
韩顺平循序渐进学 Java
零基础
第 II页
15.1.2
使用传统方法的问题分析 .......................................................................................................................................................703
15.1.3
泛型快速体验-用泛型来解决前面的问题..............................................................................................................................703
15.2
泛型的理解和好处 ..........................................................................................................................................................................................707
15.2.1
泛型的好处 ...............................................................................................................................................................................707
15.3
泛型介绍 ..........................................................................................................................................................................................................707
15.4
泛型的语法.......................................................................................................................................................................................................711
15.4.1
泛型的声明 ...............................................................................................................................................................................711
15.4.2
泛型的实例化 ...........................................................................................................................................................................711
15.4.3
泛型使用举例 ...........................................................................................................................................................................711
15.4.4
泛型使用的注意事项和细节 GenericDetail.java...................................................................................................................715
15.5
泛型课堂类型 ..................................................................................................................................................................................................719
15.5.1
泛型课堂练习题 .......................................................................................................................................................................719
15.6
自定义泛型 ......................................................................................................................................................................................................721
15.6.1
自定义泛型类 (难度) ..............................................................................................................................................................722
15.6.2
自定义泛型接口 .......................................................................................................................................................................727
15.6.3
自定义泛型方法 .......................................................................................................................................................................731
15.6.4
自定义泛型方法 .......................................................................................................................................................................734
15.7
泛型的继承和通配符 ......................................................................................................................................................................................735
15.7.1
泛型的继承和通配符说明 GenericExtends.java....................................................................................................................735
15.7.2
应用案例 ...................................................................................................................................................................................735
15.8
本章作业 ..........................................................................................................................................................................................................739
15.9
JUNIT...................................................................................................................................................................................................................................................................739
15.9.1
为什么需要 JUnit .....................................................................................................................................................................739
15.9.2
基本介绍 ...................................................................................................................................................................................740
15.9.3
使用步骤,看老师演示 JUnit_.java..........................................................................................................................................740
第 16 章 坦克大战[1] ................................................................................................................................................................................................742
16.1
坦克大战游戏演示 ..........................................................................................................................................................................................742
16.1.1
游戏演示 ...................................................................................................................................................................................742
16.1.2
文档坦克游戏说明文档.doc ....................................................................................................................................................742
16.1.3
为什么写这个项目 ...................................................................................................................................................................742
16.1.4
写项目前的提醒 .......................................................................................................................................................................742
16.1.5
如何讲解这个项目,授课的原则 ..............................................................................................................................................743
16.2
JAVA 绘图坐标体系 ..........................................................................................................................................................................................743
16.2.1
坐标体系-介绍..........................................................................................................................................................................743
16.2.2
坐标体系-像素..........................................................................................................................................................................743
16.2.3
介绍-快速入门..........................................................................................................................................................................744
16.2.4
绘图原理 ...................................................................................................................................................................................747
16.2.5
Graphics 类.................................................................................................................................................................................748
16.2.6
绘出坦克 ...................................................................................................................................................................................751
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