Read the video learning materials about Java annotations Today, and make some notes:To learn the purpose of Java annotations:Can see other people's code, especially the framework code, because it is definitely related to annotations.Programming is
This article introduces the basic use of C + +, with a program description of the basic application, of course, C + + pointers and operators of the overloaded these features are not involved, just the most basic programming things to tell once,With
Java Exception Handling summaryexception handling is a very important aspect in program design, and it is also a great difficulty in programming, starting from C, you may already know how to use if...else ... To control the anomaly, perhaps
The role of the sealed Keyword:Using sealed in class declaration can prevent other classes from inheriting this class; using sealed modifier in method declaration can prevent extended classes from rewriting this method.The sealed modifier is mainly
A partial type allows you to define a class, struct, or interface to split into multiple files. As follows: In the File1.cs: namespace pc{ partialclass A { int0; void MethodA () {} Partial void methodc (); }}In File2.
iOS development and the like and objectsOC and Java are a kind of object-oriented language, starting today I and everyone together to learn this object-oriented language OC, welcome you what problems with me to explore and learn.The OC definition
About objective Java Distilled:
I have read this book tive Java for nearly two times on and off, and the content in it is very deep and helpful for improving the quality of engineering code. I'm going to sort out a series slowly. The reason why I
From: http://blog.csdn.net/mr_raptor/article/details/80904741. Concept of Sensor
Sensor, a sensor, is a large number of existing smart phones, such as G-sensor, lightssensor, proximitysensor, and temperaturesensor. It is used as an input device of
Summary of this chapter:1: real parameters and form parameters;2: name real parameters and optional real parameters;
3: Extension Method;
4: four types of C # Parameters
4.1: Value Type
4.2: Reference Type
4.3: output type
4.4: array parameters
1:
I hereby declare that the original content of these materials comes from www.java.sun.com. I only translate and organize the content based on my understanding.
I. Overview
The reflection API allows Java code to dynamically query and operate running
When changing the eclipse compiling environment from JDK 6 to JDK 5 many times, almost all @ override writes under JDK 6 will report errors. Think twice about it.I found the cause on the Internet :)@ Override is introduced by JDK 5 and is described
Http://www.cnblogs.com/davyli/archive/2008/11/01/1324352.html
It may be that when the relationship between value type and reference type in. Net encounters passing parameters to the function, the concept of passing by value and reference will
Returned directory
CodeCompression
The sample code that appears in the previous section is compressed. If you don't trust me, perform a simple experiment: Use your favorite high levelMicrosoft. NETWrite a similar application in
1. object-oriented concepts
(1) attributes-various features of Objects
1) Each property of an object has a specific value.
2) attributes, such as name, gender, and age.
(2) method: action, action, and action.
(3) Class: A class is a
First, define the virtual method in C:
Public Virtual void virtualmethod (){......};
If virtual is added before the method name, the method is declared as a virtual method. Note that abstract and static keywords cannot be added after the
1. object-oriented and Encapsulation
Three main features of object-oriented: encapsulation (member variables), inheritance and Polymorphism
In the OC language, @ interface and @ implementation are used to process classes.
@ Interface is like a
In C #, there are four parameter types of methods:
Value Type
Reference Type
Output type
Array parameters
Value parameter:
The so-called value parameter is to use the value to pass a parameter to the method, compile the program to make a
1): block learning Summary
Block: used to save a piece of code.
1. Block features:1> block encapsulates a piece of code that can be executed at any time2> A block can be used as the return value of a function or function, and it can contain input
I have seen such an article on the internet because the abstract method cannot be static, native, or synchroniz. The meaning of these keywords and the conflict with abstract keywords are mentioned. The general content is as follows:
1. abstract is
1.5
Relationship between classes (-2)
]UML classifies the relationships between classes into the following five types of L associations: Class A and Class B instances have specific mappings. L dependency: services provided by Class A and Class B. L
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