Java programs

JDBC API là tập các Java API được sử dụng để tương tác với cơ sở dữ liệu quan hệ. ● Công dụng ● Kết nối cơ sở dữ liệu quan hệ. ● Gửi các câu truy vấn đến cơ sở dữ liệu. ● Nhận và xử lý các kết quả trả về từ cơ sở dữ liệu

51p caohungthu 26-05-2013 97 8   Download

What is ASP? – Server-side scripting technology – Files containing HTML and scripting code – Access via HTTP requests – Scripting code is interpreted on server side • What can I do with ASP? – Easily and quickly create simple Web applications – Generate dynamic Web content – Client-side scripting for validation – Access COM components to extend functionality

30p kiditer 28-09-2009 451 244   Download

The web page is derived from data that changes frequently, results from search engines and order confirmation pages at on-line stores, The web page uses information from databases or other server-side sources.For a general Servlet you must subclass javax.servlet.GenericServlet...

68p hoangdoanisuit 10-09-2011 104 26   Download

Outline Objects and Classes OOP Concepts Encapsulation Aggregation/Composition Inheritance & Polymorphism Some useful Java classes Exception Handling, I/O Readings & Exercise Discussion .

52p lebronjamesuit 23-08-2012 80 9   Download

Client's Functions Handle the user interface. Translate the user's request into the desired protocol. Send the request to the server. Wait for the server's response. Translate the response into "human-readable" results. Present the results to the user. Listen for a client's query. Process that query. Return the results back to the client.

38p lebronjamesuit 23-08-2012 82 6   Download

Identifiers: Names for the things you will refer to in your programs Used for programming entities as variables, constants, methods, classes, and packages Rules for naming identifiers: A sequence of characters that consists of letters, digits, underscores (_), and dollar signs ($). Cannot start with a digit. Cannot be a reserved word. Cannot be true, false, or null. An identifier can be of any length. .Variables & Constants Variables: used to store data in a program datatype variableName; datatype variable1, variable2, ..., variablen; Constants Represents permanent data...

37p lebronjamesuit 23-08-2012 88 5   Download

Mechanism to create new classes using existing classes The existing class is called the parent class, or superclass, or base class The derived class is called the child class or subclass As the name implies, the child inherits characteristics of the parent That is, the child class inherits the methods and data defined by the parent class. Once a behavior (method) is defined in a super class, that behavior is automatically inherited by all subclasses

77p nguyenvanhabk1 04-09-2012 80 10   Download

At the end of the lesson, the student should be able to: Describe the features of Java technology Describe the different phases of a Java program. Java was created in 1991 by James Gosling et al. of Sun Microsystems. Initially called Oak, in honor of the tree outside Gosling's window, its name was changed to Java because there was already a language called Oak.

29p nguyenvanhabk1 04-09-2012 82 7   Download

Exceptional event Error that occurs during runtime Cause normal program flow to be disrupted Examples Divide by zero errors Accessing the elements of an array beyond its range Invalid input Hard disk crash Opening a nonexistent file Heap memory exhausted

53p nguyenvanhabk1 04-09-2012 73 7   Download

Add transmission information to URL. There is a limitation in the length of the transmission character string. Example: http://localhost:8080/examples/hello? NAME=Billy POST There is not a limitation in the length of the transmission character string. It is possible to transmit only by tag.It has the execution environment such as Web containers

45p nguyenvanhabk1 04-09-2012 84 7   Download

Contents Client-side dynamic pages JavaScript .Client-side dynamic pages Web page contains programs (script) that will be executed in the client side by browser. Script improve the interaction of users and web page (than HTML) Program is written by different scripting technologies Javascript: Vbscript Flash Applet Ajax … .Javascript, VBscript Javascript: An interpreted programming, a script language from Netscape. Syntax similar to Java but it is not Java Easier and faster to code in than the more structured and compiled languages such as C and C++.

23p nguyenvanhabk1 03-09-2012 61 6   Download

Prepared Statement : compile only one time Statement : compile each time to run If we have to use one SQL statement several times, it would better to use Preparerd Statement. PreparedStatement java.sql.Connection.prepareStatement(String sql) throws SQLException Arguments : setting by parameters “?”

34p nguyenvanhabk1 04-09-2012 76 5   Download

Real world concepts can be modeled in a computer program The program is made of objects with certain properties and operations that the objects can perform It is not important how an object is implemented, but what it does Every object is responsible for carrying out a set of related tasks. A class can contain data declarations and method declarations

50p nguyenvanhabk1 04-09-2012 69 4   Download

Explanation to improve readability of program comments one line /* ... */ comments multiple lines javadoc comments Comments that in form of /** …*/ are used by the javadoc program to produce HTML documentation for the program Example: This is an example of special java doc comments used for \n generating an html documentation. It uses tags like: @author Florence Balagtas @version 1.2

61p nguyenvanhabk1 04-09-2012 70 3   Download

Describe the necessity and the advantage of the framework Develop the Web application by using the framework. Struts: The Apache Software Foundation JSF (JavaServer Faces): The Java Community Process(JCP) Webcoordinator: FUJITSU Ltd.Framework to develop the Web app. by using Servlet and JSP. Starts according to the request from a client Offers the mechanism to process request, storage of data, screen transition control, etc. Defines screen transition information in XML file (strutsconfig. xml)...

66p nguyenvanhabk1 04-09-2012 105 19   Download

Direct start from Web browser: input directly URL of JSP page into Web browser http://servername:8080/JSP/HelloWorld.jsp Start by “Action” attribute of Form tag Start when you push the summitting button on form Start from JSP (or Servlet) : Start by being specified with other JSP files

56p nguyenvanhabk1 04-09-2012 124 16   Download

The servlet is constructed, then initialized with the init method. Any calls from clients to the service method are handled. The servlet is taken out of service, then destroyed with the destroy method, then garbage collected and finalized.GenericServlet implements the Servlet and ServletConfig interfaces. It provides simple versions of the lifecycle methods init and destroy and of the methods in the ServletConfig interface.

49p nguyenvanhabk1 04-09-2012 91 10   Download

provide request information for HTTP servlets. The servlet container creates an HttpServletRequest object and passes it as an argument to the servlet's service methods (doGet, doPost, etc).Client request information including : parameter name and values, and an input stream Attributes : custom information about a request. Extends the ServletRequest interface Returns the value of attribute : public Object getAttribute(String name)

36p nguyenvanhabk1 04-09-2012 105 7   Download

Language Lap trinh JAVA Java is the language programming direction objects (as C + +) do Sun Microsystem output to the first hex niên 90 the ky 20. Program Việt using Java can be running on any hệ system that have installed your virtual Java (JVM - Java Virtual Machine). Máy virtual Java (JVM - Java Virtual Machine): One programs write by Java will be compile ra mã of the virtual Java (mã java bytecode)

53p nguyenvanhabk1 04-09-2012 83 6   Download

Mục tiêu của chương 5 GUI Programming with JAVA của bài giảng Lập trình java trình bày về AWT Package, Event-handlers, Layout Managers, Swing Package, lập trình giao diện với Swing.

49p xuanlan_12 25-04-2014 97 12   Download