Blockchain Batis
1. No matter whether the main focus is on the front-end or the back-end, we must have a deep understanding of its principle, and go to the ancestral grave
2. Correctly understand the front-end and back-end, do not understand it as the front-end is simple, that is, write HTML, write Android, do a PC program. Now we pay attention to big front-end, which involves "one cloud, multiple ends", that is, a set of services, multiple ends. Now there are many known ends. In the future, there may be other ways of presentation, one more end to make a set of independent code? This is obviously not a good solution
3. Don't be misled by the lie that "small companies do more and can exercise their abilities in all aspects" when looking for a job after graation. Try your best to find a higher platform. The starting point must be high. To experience the norms of large companies, to experience the technical atmosphere of large companies, to appreciate the code written by excellent people, and to work with excellent people, you don't want to be excellent
4. It is very important to keep learning and charging after work.
What's the future of Java? First of all, let's take a look at the salary of java development at present:
this is the salary of Java in Beijing. If you learn Java and find a job in Beijing, Shanghai and Guangzhou, the salary is generally about 7-15k. If you have more than three years of development experience, The salary is about 10-50k. From the literal expression, you can understand that Java has a very good prospect, and Java has been developed for many years in my life, and it is very mature. After you learn Java, you can find a job in the first tier, second tier and third tier cities. You don't have to worry that you can't find a job in the second tier and third tier cities, because this language is very mature, unlike python, At present, python can only work in the first tier cities, but basically can't find a job in the second tier cities. The development is very immature, and the salary is relatively low. Moreover, the speculation in the past two years is fierce
to answer your second question, how to learn zero basis self-study:
first of all, it's not easy for a beginner to change his career to learn Java. Java itself is difficult. Although interest can make us not tired, how many people learn because of interest, Or how many people know what their interests are? So I tell you very clearly that learning is a very painful thing, and not many people are willing to learn. But maybe you are a fresh student now, or you have no development in your own job and want to change your career, so you must force yourself to learn anything, otherwise you may not be able to learn anything, I read the answers of other respondents. Personally, I don't think that those professional terms are good for zero basis, because they can't understand them at all. My vernacular can give zero basis students a clear learning direction and what they should do at the beginning< Most Java learners are definitely looking for a job, so as a novice with zero foundation, you must know what standard you need to reach when looking for a job, so your first direction is to look at the recruitment confidence on various recruitment websites, which is your learning goal
2. Java needs a step-by-step and systematic learning plan. Don't think about the quick way of falling pie in the sky. Make a half year learning plan for yourself. Whether you can learn success depends on your execution in the half year. Make up the new knowledge you learn every day, and then use some cases and exercises to consolidate the new things you learn every day, otherwise you will forget
3. Learning Java is not the way we learn math and Chinese in school, so there must be a set of learning methods when learning Java. As a beginner, you will inevitably take many detours, and what you have to do is to try to cross the detours that the "predecessors" have gone through, and do not repeat meaningless things
4. According to my learning experience, learning programming needs a guide. Many problems can't be solved as beginners, which is a waste of time. For example, many beginners can use one day's time to configure JDK, so we don't need to waste time in this aspect. Let us know and remember next time, So there must be someone to guide you in learning programming
5. Systematic learning tutorial, self-learning Java, is definitely the main video and sub book, because most people can't read the book, so the video should be novel, systematic, not messy and not refined. The only recommended book for beginners is Java core technology
let me briefly talk about training:
many people don't recommend training. I personally maintain a neutral attitude, because training is like going to school. It's much better if someone takes it with him, but you must be clear that learning is always your own business. If you don't work hard after class, everything will be wasted, If the conditional can choose to train, the probability of learning will be high. If the condition is general, you can choose self-study, as long as you can insist on the whole every day, you can get a return in the end. This is certain. I am self-study, but I also know the pain of self-study, so I want to answer here. I also hope novices can avoid too many detours and give up
learning points:
1. In the case of no one to teach you, you will not know a lot of things, so the first point is the code specification. I have seen that many people write code in the top grid, so they go wrong at the beginning and are easy to give up
More hands-on, more practice and more API3. Try to solve the problem by yourself first, but you really can't understand it. Go to other people to solve the problem and exercise your ability to solve the problem
4. To improve learning efficiency, don't care about a problem for too long. Just plan what you do every day and finish it. Remember my elder brother's words: you can't chew too much
well, I won't say too many professional terms, so novices can't understand them. The above are some suggestions for me to learn java with zero basis. According to my previous years, including my current work, beginners can do what I said above. They don't have any problems finding a job. If they have any problems, they can consult me at any time. If they think it's good, they hope to give me some praise and add some attention
Shangsi Valley I've heard their recordings of spring mvc4, mybatis and Shiro recently, and they all speak very well. I feel that they are the National Elite program ape teaching. If conditions permit, you can think about it. You can try to hear whether it is suitable for you to study. They can find videos on their official website or disk.
the main content involves technical knowledge points, class length
java language foundation
java language, Java environment variables, variables, operators, expressions, branch statements, loop statements, arrays, array applications, and instry specifications. Two color ball lottery program
5 days
java object-oriented
class, object, attribute, method, construction, encapsulation, inheritance, polymorphism, rewriting, overloading, access control character, this and super, static, singleton design pattern, final, abstract class and interface, template design pattern, internal class
5 days
javase core class library
java core class, Java string, date processing, wrapper class Collection, data structure, exception and exception handling, javaio, multithreading programming, thread synchronization mechanism, parallel contract, Java network programming, Java generics, java reflection mechanism<
10 days
java design
design principles, design patterns, common algorithms, new features of java8 / 9, Maven usage, SVN version management, lamda expression, GIT, idea tools
2 days
the second stage of content database technology and web front-end technology (H5 / JS)
the main contents involve technical knowledge points, total class hours
Oracle database development
sql statement, SQL statement principle, SQL statement SQL statement optimization, table, view, sequence, index, Oracle data dictionary, stored procere, function, trigger, PL / SQL development, database design principles, etc.
6 days
JDBC
JDBC core API, JDBC optimization technology (cache technology, batch processing technology, DBCP, c3p0 and other database connection pools)
2 days
XML
XML syntax, XML parsing (Sax, DOM Dom4j)
1 day
Web front end Foundation (HTML5 / CSS3 / JS)
HTML5 (H5) basic document structure, links, lists, tables and forms; CSS basic syntax, box model, floating layout, positioning; JavaScript language foundation, DOM programming, event model, etc
HTML5 canvas, web storage, geolocation, audio / video, drag and drop, websocket technology, etc.
CSS border, background, text effect, font, animation, etc.
8 days
Web front end advanced
jQuery framework
jQuery, jQuery object, element selector, DOM operation, attribute operation, CSS operation, animation effect JQuery plug-in, etc.
2 days
Web front end advanced
Vue
bootstrap
jQuery extension
installation, use, template syntax, condition, loop, event handling, form, etc.
bootstrap CSS, layout component, plug-in, editor
highcharts chart component
jQuery form verification Plug ins such as pop-up box
3 days
the third stage content Java Web technology and mainstream framework
the main content involves technical knowledge points
JSP & servlet
JSP syntax, JSP tags, custom tags, JSTL and El expressions, new features of JSP, MVC design pattern, servlet life cycle and servlet server, servlet filter and listener, etc Tomcat configuration and deployment
MySQL installation, use, Java access to MySQL
8 days
Ajax framework
Ajax foundation, XHR object, AJAX design pattern, JSON technology, AJAX function in jQuery
2 days
spring
spring IOC, IOC injection skills, advanced object assembly (automatic assembly, template assembly, component scanning feature, factorybean, object life cycle), etc Spring AOP principle, AspectJ, spring JDBC support, spring transaction and security management, spring MVC, restful technology, spring internationalization, spring security, apacheshiro, spring integration Shiro, etc.
8 days
springboot
spring cloud
spring bootservlet, filter, listener, interceptor, boot load, database connection, multiple data sources, dynamic data sources, transaction Spring bootshiro privilege management, spring bootjdbc access database, spring bootmybatis access database, etc.
spring cloud distributed configuration management, service registration
5 days
mybatis
mybatis mapping foundation, DQL mapping, DML mapping, result set mapping, advanced dynamic SQL mapping, use of sqlsession, sprigmybatis integration, mybatis paging processing Associated query mapping
2 days
NoSQL
redis principle, redis command, javaredisapi, redis cluster and cache
mongodb principle, mongodb command, javamongodb API
3 days
Struts2 & hibernate
Struts2 control process, ognl, action, interceptor, result, FreeMarker, Struts2 tag library, Struts2 extension, Struts2 application, hibernateapi Hibernate entity mapping technology, hibernate relationship mapping technology, HQL query, hibernate cache technology, SSH integration
6 days
the fourth stage of content project combat Enterprise solution
the main content involves the total length of technical knowledge points
Enterprise Project
enterprise actual combat
solution
CRM / P2P system development actual combat
linux enterprise application operation deployment scheme
Enterprise Project R & D process Specification and common architecture solution
message service solution
search service solution
load balancing solution
enterprise common business solution
application cluster solution
database cluster solution
security service solution
distributed service solution
cache service solution
high concurrency and high reliability Cluster mode integration solution
workflow solution
15 days
the fifth stage content employment sprint course
the total length of main content class
technical lecture, enterprise interview questions practice
3 days
Project interview practice
2 days
technical Q & A, interview guidance, employment recommendation service
no deadline
the sixth stage content hot technology, case Tool application (free