java basic concepts pdf

Introduction to Basic concepts of e-maile-mail is used for online confidence delivery and communication, and it is one of the most important Internet services. According to statistics, 30% of the business of the Internet is email related. At the same time, we can not deny that it plays a very important role in our daily life, work and office. For example: many office automation projects (OA) with the functi

Python study note 01: basic concepts, python_01 Directory1. Introduction to Python2. Common Data Structures in Python2.1 What is a list?2.2 What are tuples?2.3 what is a dictionary?2.4 index and sharding3. Other Basic Concepts3.1 Data Types and variables3.2 Generator3.3 iteratorModule 3.4 1. Introduction to Python Development History: Python was designed by Gui

Basic concepts of DAO-DTO, dao-dto DAO: encapsulate access to the databaseDTO: binding an object to a database table Generally speaking, DAO and DTO are objects first. Are these two objects used? DAO: used to access data (for example, userDao. java) DTO: used to convert data (pojo class in java. Example: user.

Notes | concepts Last blog I mentioned the newly released Eclipse SDK 3.1m5a, and in the next series of articles, I will be scattered to record some of my eclipse related content, such as SWT, PDE, RCP, the learning process and experience, not as a formal tutorial or rigorous documentation, Just thought of where it was. Earlier blog, I mentioned the release of the Eclipse SDK 3.1m4, in fact, at that time, Eclipse's JDT has supported all the new s

Basic concepts of Android application development: PrefacePlay games for nearly three years (mainly by the page and Hand tour), the beginning of this year, the company's business development needs to do Android, to now have studied 4 months, has been initially built to complete the company's SDK project, the project idle use the blog memo their early summary of some of the pre-summed up (things are not orig

Some basic understanding of the concurrency programming concept is very important. Tell us what we think indicates the main problem in the direction.Here are some basic concepts about locking.Under normal circumstances, we are talking about locks that refer to "mutually exclusive" locks. Because there are some special locks, example "read-write lock", there is no

Reprint Please specify source: http://blog.csdn.net/iwanghang/I am participating in the CSDN 2016 blog Star selection, hope to get your valuable a vote ~Http://blog.csdn.net/vote/candidate.html?username=iwanghangPlease vote for me, thank you ~ ~If there is no CSDN account directly using the/qq/Weibo landing can vote ~ ~during the period of organizing these concepts, forcing yourself to read a lot of others ' blogs is a rare process. Although, some of

. NET heap and stack 01, basic concepts, value type memory allocation,. net01 When we understand some fundamental aspects of the. NET Framework, it is necessary to have a better understanding of the underlying knowledge. For example, how does the. NET Framework manage memory and how does garbage collection... so that we can write programs with higher performance. In. NET Framework, there are two ways to

There are some basic concepts in the Mule ESB that understand these basic concepts before you can understand the internal mechanisms of Mule. We can also see the basic idea of mule to solve the problem. 4. Basic

First, the conceptJava is an object-oriented programming language that can be used to write cross-platform applications, which can be found in the Baidu Java Encyclopedia, which is not covered here.Java is divided into three systems, namely:Java SE (j2se,java2 Platform standard Edition, "Java Platform Standards Edition", contains the basic environment and core cl

3 basic concepts in extjs As mentioned in chapter 1st, extjs is very different from traditional web development. Especially in interface development, you do not need to be entangled in HTML and CSS, but it is very similar to Java swing or Delphi. In this way, extjs development involves some concepts that are not availa

WebLogic application server has the following basic concepts: Domain:A domain is a logical concept used to organize and manage a series of application server instances, that is, the server to be explained below. the domain is the largest concept in the WebLogic application server. When the WebLogic application server is started, it starts with a certain domain. It has a central configuration file called con

availability. BEA Weblogicserver enables both Web clustering and EJB component clustering without the need for any specialized hardware or operating system support. A Web page cluster enables transparent replication, load balancing, and content tolerance, such as a web shopping cart, and component clusters that handle complex replication, load balancing, and EJB component fault tolerance, as well as recovery of State objects such as EJB entities. Whether it is a Web cluster or a component clust

constructor, and super refers to a reference to the parent class The Super keyword must be the first line statement in the construction method. Method override (Override): Also called overwrite, the subclass is the same as the method return type of the parent class, the method name is the same as the parameter, so we say that the subclass and the method of the parent class constitute an overriding relationship. Method overrides the relationship between method overloads: Overload

Jdk:java Development Kit (Java SDK, for Java Developers, includes development tools (compile tools Javac.exe and packaging tools Jar.exe, etc.) +JRE)Jre:java Runtime Environment (Java virtual Machine (JVM) +java program required core class library)Eclipse and MyEclipse:Javase, Java