java语言程序设计 进阶篇 原书第八版 课件 PPT(第三十七章)

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java语言程序设计 进阶篇 原书第八版 课件 PPT(第三十二章)

java语言程序设计 进阶篇 原书第八版  课件 PPT(第三十二章)

(1 ) A listen er ob ject is an in stan ce of a listen er in terface
listen er: Listen erC lass
Figure 15.3
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
Chapter 32 JavaBeans and Bean Events
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
NOTE: This chapter does not require that you use any builder tools. If you are interested to use JavaBeans in rapid Java application development using JBuilder or Sun ONE Studio, please refer to Supplement I, “Rapid Java Application Development Using JBuilder” or Supplement J, “Rapid Java Application Development Using Sun ONE Studio,” on the companion Website.
JavaBeans is a software component architecture that extends the power of the Java language by enabling wellformed objects to be manipulated visually at design time in a pure Java builder tool, such as JBuilder and NetBeans.

java语言程序设计 进阶篇 原书第八版 课件 PPT(第二十七章)

java语言程序设计 进阶篇 原书第八版  课件 PPT(第二十七章)

Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
11
Representing Edges: Adjacency Matrix
1
Objectives
To model real-world problems using graphs and explain the Seven Bridges of Kö nigsberg problem (§27.1). To describe the graph terminologies: vertices, edges, simple graphs, weighted/unweighted graphs, and directed/undirected graphs (§27.2). To represent vertices and edges using lists, adjacent matrices, and adjacent lists (§27.3). To model graphs using the Graph interface, the AbstractGraph class, and the UnweightedGraph class (§27.4). To represent the traversal of a graph using the AbstractGraph.Tree class (§27.5). To design and implement depth-first search (§27.6). To design and implement breadth-first search (§27.7). To solve the nine-tail problem using breadth-first search (§27.8). To solve the Knight’s Tour problem by reducing it to a Hamiltonian path problem (§27.9).

java语言程序设计基础篇(第八版)课件_完整版

java语言程序设计基础篇(第八版)课件_完整版

Java语言程序设计基础篇(第八版)课件_完整版第一章 Java语言概述Java是一种跨平台的编程语言,可在各种操作系统上运行。

它是一种面向对象的语言,具有高度的可移植性和可扩展性。

本章将介绍Java语言的特点、发展史和应用领域。

同时,还会介绍编写Java程序的开发环境和运行环境。

1.1 Java语言特点Java语言具有以下特点:•简单易学、易于使用•面向对象的设计思想•可移植性强•安全性高•高性能1.2 Java语言的发展史Java最早由Sun Microsystems于1995年发布。

自发布以来,Java已经逐渐成为全球范围内最流行的编程语言之一。

Java的发展历程经历了以下几个版本:•JDK 1.0(1996年)•JDK 1.1(1997年)•J2SE 1.2(1998年)•J2SE 1.3(2000年)•J2SE 1.4(2002年)•J2SE 5.0(2004年)•Java SE 6(2006年)•Java SE 7(2011年)•Java SE 8(2014年)1.3 Java语言的应用领域Java语言的应用范围很广,它可以用于开发各种应用程序,如:•企业级应用软件•移动应用程序•互联网应用程序•游戏开发•操作系统1.4 Java语言的开发环境Java语言的标准开发环境包括以下几个部分:•JDK(Java Development Kit,Java开发工具包)•Eclipse、NetBeans等集成开发环境1.5 Java语言的运行环境Java程序在运行时需要Java虚拟机(JVM)的支持,JVM可以在各种操作系统上运行。

因此,Java程序的可移植性非常强。

同时,JVM还提供了一些优化,可以使Java程序运行得更快。

第二章 Java编程基础2.1 程序结构Java程序的基本结构包括以下几个部分:•包声明•导入语句•类声明2.2 变量和常量Java中的变量有以下几种类型:•整型•浮点型•字符型•布尔型Java中的常量有以下几种类型:•整型常量•浮点型常量•字符型常量•布尔型常量2.3 运算符Java中的运算符包括以下几种类型:•算术运算符•关系运算符•逻辑运算符•位运算符•赋值运算符2.4 流程控制语句Java中的流程控制语句有以下几种类型:•if语句•switch语句•for语句•while语句•do…while语句第三章 Java面向对象编程基础3.1 面向对象编程概述面向对象编程是一种编程范式,它通过封装、继承和多态,使程序结构更清晰、更易于维护。

java语言程序设计 进阶篇 原书第八版 课件 PPT(第四十五章)

java语言程序设计 进阶篇 原书第八版  课件 PPT(第四十五章)

9
LR imbalance and LR rotation
LR Rotation: An LR imbalance occurs at a node A such that A has a balance factor -2 and a left child B with a balance factor +1. Assume B’s right child is C. This type of imbalance can be fixed by performing a double rotation at A (first a single left rotation at B and then a single right rotation at A).
The process for inserting or deleting an element in an AVL tree is the same as in a regular binary search tree. The difference is that you may have to rebalance the tree after an insertion or deletion operation. The balance factor of a node is the height of its right subtree minus the height of its left subtree. A node is said to be balanced if its balance factor is -1, 0, or 1. A node is said to be left-heavy if its balance factor is -1. A node is said to be right-heavy if its balance factor is +1.

java语言程序设计 进阶篇 原书第八版 课件 PPT(第四十三章)

java语言程序设计 进阶篇 原书第八版  课件 PPT(第四十三章)
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
8
Passing Parameters, cont.
Remote object type. Remote objects are passed differently from the local objects. When a client invokes a remote method with a parameter of some remote object type, the stub of the remote object is passed. The server receives the stub and manipulates the parameter through the stub.
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
4
The Differences between RMI and Traditional Client/Server Approach
Chapter 43 Remote Method Invocation
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807

java语言程序设计-基础篇--原书第八版--课件-PPT(第十二章)

java语言程序设计-基础篇--原书第八版--课件-PPT(第十二章)
Label
Text Check Radio
field Box
Button
Button
// Create a text field with text "Type Name Here" JTextField jtfName = new JTextField("Type Name Here");
// Create a check box with text bold JCheckBox jchkBold = new JCheckBox("Bold");
Applet
JApplet
Window
Frame Dialog
JFrame JDialog
JComponent
Swing Components in the javax.swing package
Lightweight
6
Container Classes
Object
Dimension Font
LayoutManager 1
JComponent
JPanel
Swing Components in the javax.swing package
Lightweight
8
JComponent
Swing GUI Components
JC heckBo xM e nuIte m
AbstractButton
JM enuIte m JButton JToggleButton
// Create a radio button with text red JRadioButton jrbRed = new JRadioButton("Red");

java语言程序设计 基础篇 原书第八版 课件 PPT(第十三章)

java语言程序设计 基础篇  原书第八版  课件 PPT(第十三章)

Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
2
Objectives





Show runtime error
Quotient Run
Fix it using an if statement
QuotientWithIf Run
What if the runtime error occurs in a called method?
QuotientWithException Run
System errors are thrown by JVM and represented in the Error class. The Error class describes internal system errors. Such errors rarely occur. If one does, there is little you can do beyond notifying the user and trying to terminate the program gracefully.
Now you see the advantages of using exception handling. It enables a method to throw an exception to its caller. Without this capability, a method must handle the exception or terminate the program.

Java程序设计(高校系列教材课件).ppt

Java程序设计(高校系列教材课件).ppt

1.21
高等学校计算机应用人才培养系列教材
常量、关键字和标识符
常量
常量代表某一特定类型的具体值,常量有数字常量、 布尔常量、字符常量和字符串常量之分。
数字常量包括两种:整型常量和浮点型常量。常用的 整型常量都是十进制的。整型常量还有另外两种进制 ,八进制和十六进制。在Java中,八进制的值通过在 它的前面加一个前导0来表示,而通过前导的0x或0X来 表示一个十六进制的值。
) 分布式(Distributed)
高等学校计算机应用人才培养系列教材
1.7
Java和Internet
在使用Java时,用户将从Internet下载Java字节码并在自 己的计算机上运行。在Web网页中运行的Java程序叫做 Applet。要使用Applet,需要有支持Java的浏览器,它可 以解释字节码。
True或false
1.19
高等学校计算机应用人才培养系列教材
Java的数据类型和变量
变量
变量是Java的一个基本存储单元。在Java中,在使用变量之前需要先 声明变量。变量声明通常包括三部分:变量类型、变量名、初始值, 其中变量的初始值是可选的。
以下是几个各种变量声明的例子,有一些包括了变量的初始化。
char
boolean
所占用字节数 1 2 4 8 4 8
2
1
范围 -128到127 -32,768到32, 767 -2,147,483,648到2,147,483,647 -9,223,372,036,854,775,808到 -9,223,372,036,854,775,807 大约 ±3.4+38 大约 ±1.7E+308
1.10
高等学校计算机应用人才培养系列教材

《Java程序设计》电子课件

《Java程序设计》电子课件

this.copper=c; // 给类成员变量z赋值
}
2024/10/20
宋波,李晋,李妙妍,张悦
String getModel( ) { return “金牌 = ”+gold+“ 银牌
=”+silver+“ 铜牌="+copper; }
2024/10/20
宋波,李晋,李妙妍,张悦
public static void main( String args[ ]) {
5. return color;
6. }
7. public float count(){ 8. int num; 9. if(num<0)
• 错误语句,因为局 部变量num还没有
10. return 0;
被赋值就使用
11. else
12. return price*num;
13. } 2024/10/20
2024/10/20
宋波,李晋,李妙妍,张悦
2. 类体
① 构造和初始化新对象的构造方法; ② 表示类及其对象状态的变量; ③ 实现类及其对象的方法; ④ 进行对象清除的finalize()方法。
2024/10/20
宋波,李晋,李妙妍,张悦
3.1.2 成员变量与局部变量
• 成员变量(类):
➢ 在类体中声明的变量,且不属于任何 一个方法时。
Olympics2 o2=new Olympics2( );
System.out.println("Before changModel:"+o2.getModel());
o2.changeModel(100,100,100);
System.out.println("After changeModel:"+o2.getModel());

java语言程序设计 进阶篇 原书第八版 课件 PPT(第四十二章)

java语言程序设计 进阶篇 原书第八版  课件 PPT(第四十二章)

11
XML serialization/deserialization
Can you pass an argument of any type between a client and a Web service? No. SOAP only supports primitive types, wrapper types, arrays, String, Date, Time, List, and several other types. It also supports certain custom classes. An object that is sent to or from a server is serialized into XML. The process of serializing/deserialization objects, called XML serialization/deserialization, is performed automatically. For a custom class to be used with Web methods, the class must meet the following requirements:
C lien t W eb ser v ice p ro x y o b je ct S er v er
In ter n e t
W eb ser v ice
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
5
Creating Web Services Using NetBeans

java语言程序设计基础篇(第八版)课件-完整版

java语言程序设计基础篇(第八版)课件-完整版
• 第二条指令用3个字节数据“10100010 00000100 00000000”表示CPU把寄 存器AL中数放置到内存中地址编号为 00000100的存储单元(1个字节)中保 存。其中第3个字节数据和第2个字节数 据合成一个16位二进制数据(即 00000000 00000100),表示存储单 元(a)的地址。
12
1.1.1计算机的组成与运行
• 2)输出单元。输出单元是计算机输出信 息的部分。它把计算机处理过的信息放 置到各种输出设备中,从而使这些信息 能够被计算机外部使用。当今计算机的 大多数信息是通过屏幕显示和纸张打印 输出的,同时也出现使用其它许多输出 设备来进行信息输出,如音箱等。
13
1.1.1计算机的组成与运行
16
1.1.1计算机的组成与运行
• 这些信息可能需要几个小时、几天、几 个月甚至几年才会被使用。二级存储单 元也称为外存储器,外存或称为辅存。
• 计算机运行的过程,就是顺次执行程序 中指令的过程。计算机的指令以及运行 时数据都是采用二进制数表示的。下面 举一个简单的例子说明计算机的运行。
17
1.1.1计算机的组成与运行
• 计算机硬件本身提供了执行计算和逻辑 判断的功能,这些功能表现为一组指令, 如加法指令、减法指令、取数指令、存 数指令、输入指令和输出指令以及逻辑 判断类指令等;
• 而软件是程序员利用计算机指令集,规 划组织完成令我们激动的玩游戏、听音 乐和制作动画等计算机应用的特定指令 序列。软件也可简称为程序。实际上,
6
1.1.1计算机的组成与运行
• 我们操作过计算机的人都知道,计算机 就是一种设备,它能让我们进行文字处 理,绘制图形,玩游戏,听音乐,制作 动画,上网查询信息和观看网络电影, 等等。这是从计算机应用角度上的认识, 实际上,计算机是能够以比人快几百万 甚至几十亿倍的速度执行计算和逻辑判 断的设备。这种说法可能让人感到有点 神奇甚至迷惑:

java语言程序设计基础篇(第八版)课件PPT第一章

java语言程序设计基础篇(第八版)课件PPT第一章

Memory
CPU
Communication Devices e.g., Modem, and NIC
Input Devices e.g., Keyboard, Mouse
Output Devices e.g., Monitor, Printer
resolution The resolution specifies the number of pixels per square inch. Pixels (short for “picture elements”) are tiny dots that form an image on the screen. The resolution can be set manually. The higher the resolution, the sharper and clearer the image is. However, the image may be very small if you set high resolution on a small screen monitor. PC monitors are usually 15-inch, 17-inch, 19-inch, or 21-inch. For a 15inch monitor, a comfortable resolution setting would be 640480 (307,200 pixels). dot pitch The dot pitch is the amount of space between pixels. The smaller the dot pitch, the better the display.
Memory is to store data and program instructions for CPU to execute. A memory unit is an ordered sequence of bytes, each holds eight bits. A program and its data must be brought to memory before they can be executed. A memory byte is never empty, but its initial content may be meaningless to your program. The current content of a memory byte is lost whenever new information is placed in it.

java语言程序设计 进阶篇 原书第八版 课件 PPT(第四十七章)

java语言程序设计 进阶篇 原书第八版  课件 PPT(第四十七章)

RB Tree
TestRBTree
Run
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
9
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
2
What is a Red Black Tree?
A red-black tree is a binary search tree, which is derived from a 2-4 tree. A red-black tree corresponds to a 2-4 tree. Each node in a redblack tree has a color attribute red or black.
6
Conversion not unique
the conversion from a 2-4 tree to a red-black tree is not unique.
20
20
16
15
34
15
34
15
34
3
16
25 27
50
3
16
25
50
3
16
27
50
27
25
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807

Java语言ppt课件(完整版)

Java语言ppt课件(完整版)
String类
用于创建和操作字符串对象,提供了一系列的 方法来处理字符串,如连接、比较、查找、替 换等。
StringBuffer类
可变的字符序列,用于在字符串中进行插入、删除和 替换等操作,效率高于String类。
StringBuilder类
与StringBuffer类似,但StringBuilder的方法 不是线程安全的,因此在单线程环境下效率更 高。
注解概念
阐述注解的定义、分类和作用,以及Java内置的注解类型。
自定义注解
讲解如何定义和使用自定义注解,包括元注解和注解元素。
注解处理器
介绍注解处理器的工作原理,以及如何使用注解处理器处理注解。
元数据与反射
探讨元数据与反射的关系,以及如何通过反射获取注解信息。
05
Java常用类库与API
字符串处理类库
Java语言的应用领域
企业级应用
Java语言在企业级应用开发中占据主 导地位,如Web应用、分布式系统、 大数据处理等
01
02
移动应用
Android操作系统使用Java作为官方 开发语言,大量移动应用采用Java开 发
03
游戏开发
许多大型游戏使用Java编写,如 Minecraft、Runescape等
DataInputStream/DataOutputStre am类:用于读写Java原始数据类型的 数据流,支持数据的序列化和反序列 化。
多线程编程相关类库
Thread类
Java中的线程类,可以通过继承 Thread类并重写run()方法来实现多线
程程序。
Callable接口
与Runnable接口类似,但Callable接 口可以返回执行结果并且可以抛出异

java语言程序设计 进阶篇 原书第八版 课件 PPT(第二十三章)

java语言程序设计 进阶篇 原书第八版  课件 PPT(第二十三章)

1
Objectives



To estimate algorithm efficiency using the Big O notation (§23.2). To explain growth rates and why constants and nondominating terms can be ignored in the estimation (§23.2). To determine the complexity of various types of algorithms (§23.3). To analyze the binary search algorithm (§23.4.1). To analyze the selection sort algorithm (§23.4.2). To analyze the insertion sort algorithm (§23.4.3). To analyze the Towers of Hanoi algorithm (§23.4.4). To describe common growth functions (constant, logarithmic, loglinear, quadratic, cubic, exponential) (§23.4.5). To design efficient algorithms for finding Fibonacci numbers (§23.5). To design efficient algorithms for finding GCD (§23.6). To design efficient algorithms for finding prime numbers (§23.7). To design efficient algorithms for finding a closest pair of points (§23.8).
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1
Objectives
To
Байду номын сангаас
understand the concept of database and database management systems (§37.2). To understand the relational data model: relational data structures, constraints, and languages (§37.2). To use SQL to create and drop tables, and to retrieve and modify data (§37.3). To learn how to load a driver, connect to a database, execute statements, and process result sets using JDBC (§37.4). To use prepared statements to execute precompiled SQL statements (§37.5). To use callable statements to execute stored SQL procedures and functions (§37.6). To explore database metadata using the DatabaseMetaData and ResultSetMetaData interfaces (§37.7).
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
5
Relational Structure
A relational database consists of a set of relations. A relation has two things in one: a schema and an instance of the schema. The schema defines the relation and an instance is the content of the relation at a given time. An instance of a relation is nothing more than a table with rows and named columns. For convenience with no confusion, we refer instances of relations as just relations or tables.
3
Database Application Systems
Application Users
Application Programs
Database Management System

Database Management System


database
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
4
Rational Database and Relational Data Model
Most of today’s database systems are relational database systems, based on the relational data model. A relational data model has three key A relational data model has three key components: structure, integrity and languages.
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
7
Student Table
Student Table ssn 444111110 444111111 444111112 444111113 444111114 444111115 444111116 444111117 444111118 444111119 444111120 firstName Jacob John George Frank Jean Josh Josh Joy Toni Patrick Rick mi lastName R K K E K R R P R R R Smith Stevenson Smith Jones Smith Woo Smith Kennedy Peterson Stoneman Carter phone 9129219434 9129219434 9129213454 9125919434 9129219434 7075989434 9129219434 9129229434 9129229434 9129229434 9125919434 birthDate street zipCode deptID BIOL BIOL CS BIOL CHEM CHEM BIOL CS MATH MATH BIOL 1985-04-09 99 Kingston Street 31435 null 100 Main Street 31411 31419 31411 31411 31411 31411 31412 31412 31411 1974-10-10 1200 Abercorn St. 1970-09-09 100 Main Street 1970-02-09 100 Main Street 1970-02-09 555 Franklin St. 1973-02-09 100 Main Street 1974-03-19 103 Bay Street 1964-04-29 103 Bay Street 1986-04-09 19 West Ford St.
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
2
What is a Database System?
Application Users
1969-04-29 101 Washington St. 31435
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
Course Table Tuples/ Rows
courseId 11111 11112 11113 11114 11115 11116 11117 11118
subjectId CSCI CSCI CSCI CSCI MATH MATH EDUC ITEC
courseNumber 1301 1302 3720 4750 2750 3750 1111 1344
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
6
Course Table
Relation/Table Name Columns/Attributes
Chapter 37 Java Database Programming
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
Application Programs System Users Database Management System (DBMS)
e.g., Access, MySQL, Oracle, and MS SQL Server
database
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
9
Liang, Introduction to Java Programming, Eighth Edition, (c) 2011 Pearson Education, Inc. All rights reserved. 0132130807
Table vs. File
NOTE: A table or a relation is not same as a file. Most of the relational database systems store multiple tables in a file.
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