Now assume that there are two tables in the database, one is the class table and the other is the teacher's table. A class has only one teacher in charge, and a teacher can only serve as a class teacher, this is what we call a one-on association
1. Access to resourcesThe code uses the Getresources () method of the context to get the resources object, access its own defined resource R. resource file type. resource file name, Access system-defined resource ANDROID.R. Resource file type.
1. Why Web. XML has different versions of the XSD reference:
JDK dependent change;
or the servlet (JAVA EE) itself API changes;
2. Why there is a difference between DTD and XSD two versionsAs I saw in this article, the author
The first method:You need to use a namespace System.Runtime.Serialization.JsonThere are jsonreaderwriterfactory below.XmlDictionaryReader reader = Jsonreaderwriterfactory.createjsonreader (Encoding.UTF8.GetBytes (Sjson),
Lazy LoadingImplemented through ASM and cglib two packages, domain is non-final. 1.session.load lazy Loading. 2.one-to-one (Element) Lazy loading: Must meet the following three conditions to achieve lazy loading (the main table can not have
Android Development, open source, full market is a messy model, there is always a suitable for such or that model. Share some of the methods you use in your development here.First of all to introduce drawable-mdpi, drawable-hdpi-1280x800,
I. Introduction of STRUTS2STRUTS2 is a framework for developing MVC applications. It provides solutions to some common problems in the development of Web applications.1.STRUTS2 scope: The first layer in the three-tier architecture, which is
One, the first spring El example--helloworld DemoThis example shows how to inject string, Integer, and bean into attributes using Spel.1) Spring El's Dependency packageStart by adding a dependency package to Maven's Pom.xml, which automatically
The xml data source object is an ActiveX control that allows you to operate data between an XML file and an HTML page. This article will show you how to extract data from various XML data sources and how to use javaScript to display the data. The
The main topics in this section include the Android Desktop widget, the app Widget Development Guide, and a simple example of how to visually explain the app widget.The concept of widgets, app widgets, Web appsThe original concept of the widget was
It is a good practice to extract strings from the UI in the application code and store them in additional files. Android in each project through a resource directory makes this matter very simple.If you created a project using the Android SDK tool,
XML Control Configuration Propertiesandroid:background= "@drawable/shape"LabelCorners----------Rounded CornersGradient----------GradientsPadding----------content distance from boundarySize------------SizesSolid----------Fill
Original address: http://mypyg.iteye.com/blog/968646Goal: Implement the TextView and ImageButton combinations to set the properties of a custom control through XML.1. Control layout: LinearLayout as root layout, one textview, one ImageButton. XML
Shape use, gradient, split line, border, translucent, translucent shadow effect.Let's start with a quick look at the properties common in shape. (Refer to the API documentation for more information)Reprint Please specify: rflyee_:
First, the ABC in WCFScenario: The company lets you send a copy of the contract documents, the process of sending documents you can choose to have a taxi, metro or bus. When you get to the other company, you need to find someone in charge and a copy
In Beforesuite, Beforetest, Beforeclass, Beforemethod and Beforegroups, the following three annotations are better understood, in fact, Beforesuite, The literal meaning of beforetest is also very simple:Beforesuite: Run before the entire test set is
The first step: for a better comparison, prepare two identical edittext (when the activity starts, the focus will be on the first edittext, if you do not want this only need to write a height and broadband of the edittext can be avoided, this does
In the dynamic method call, the use of wildcard method problems, referring to http://www.cnblogs.com/jasonlixuetao/p/5933671.html this blog, the problem solved.This is helloworld.xml:1 XML version= "1.0" encoding= "UTF-8"?>2 DOCTYPE Struts public3 "-
XSL can be used to completely separate the data from the format, and the following compares the difference between a xml+css and a xml+xsl.XML + CSSThe contents of the Resume.xml file are as follows:1 XML version= "1.0" encoding= "GB2312"?>2
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