Java is now the number one programming language in the world, and it is widely used and has broad prospects.
The development of many software is inseparable from Java, and in the development field with Java as the core, the demand for JavaEE programmers has been in the first place for 10 years!
So how do you get started with learning Java ? What are the main points of the study course ? What is the learning path to become proficient in Java ?
Do the following points to get started faster and master Java easier.
01
Java Essentials Basics
1
You need to be proficient in object-oriented analysis and design (OOA/OOD), involving patterns (GOF, J2EEDP), and synthesis patterns.
You should have a good understanding of UML, especially classes, objects, interactions and statediagrams.
2
You need to learn the basics of the Java language and its core libraries (collections, serialization, streams, networking, multithreading, reflection and others).
3
You should understand the JVM, classloaders, classreflect, and the basic working mechanism of garbage collection.
You should be able to decompile a class file and understand some basic assembly instructions.
4
You need to learn java database technologies such as JDBC API and use at least one persistence/ORM framework.
For example Hibernate, JDO, CocoBase, TopLink, InsideLiberator or iBatis.
5
You should be proficient in a JAVAIDE such as sunOne, netBeans, IntelliJIDEA or Eclipse.
6
JAVA (some configuration to be precise) is verbose, it requires a lot of manual code (eg EJB), so you need to be familiar with code generation tools such as XDoclet and so on.
02
5 stages of learning Java
Stage 1
Java Design and Programming Thinking Skills
Proficient in object-oriented thinking and basic Java syntax
Proficient in Java exception handling
Proficient in Java I/O operations
Master Java Multithreading
Proficient in the use of Jjava collection classes
Master Java Network Programming
Proficient in database/JDBC usage
Stage 2
Web front-end development skills
Master html+css+js related technologies
Quickly write code through H5-related libraries
Build an interface that meets the requirements of big data, so that front-end + back-end + big data can be three-dimensionally integrated
Stage 3
JavaEE advanced skills
Master Tomcat/Nginx server construction
Master the use of Jsp&Servlet
Proficient in the principles and use of SSH and SSM, two popular frameworks
Stage 4
Skills mastered by core knowledge of big data
Understand the principle of hadoop mechanism
Understand the process of building a hadoop cluster
Understand Hdfs API usage and mr programming model
Learn how to use hive, hbase, sqoop, flume and other components
Stage 5
Integrated project skills
Large online shopping mall project
Same day delivery
ordering system
online bookstore
OA office automation project
CRM customer relationship management project
The real comprehensive project development capabilities of the above enterprises have reached the technical level of intermediate and senior Java engineers.
How to learn java well, this is a process from easy to difficult to easy, you need to learn step by step.
Strictly speaking, java is a relatively complex programming language, and it is impossible to learn a very good level without hard work.
Similarly, in order to improve the efficiency of learning java and ensure that you can learn it, it is recommended to find a formal professional learning institution, accept systematic learning and master java practical projects, in order to become a qualified person from entry to proficient faster. java engineer.