Java language basics

Java language basics
Introduction

This article is an outline document written to get started with Java and collect related entries on the network. For the directory structure, refer to this book.

Development Environment Settings

Install jdk first. IDE uses IDEA and has a free community version.

Language basics

Type conversion

Console input, BufferedReader, Volume

Operators and expressions

Process control array and string

Java. util. Arrays class supports Array Operations (static class methods)

For each: for (int ele: arr) expr;

Multi-dimensional array

String

Class and Object

Object (create-use-destroy)

Anonymous object

Parameter transfer

Class features

Object

Object-oriented

Overwrite @ Override

Overload, overwrite, and hide

Java. lang. Object

Abstract classes and Methods abstract

Interface (has-)

Abstract classes and interfaces

Internal class and Anonymous class

Package

GC

Exception Handling

IO

Multithreading

GUI

Design Mode

JAVA Basics

If you have a poor foundation or have no foundation, I personally think that reading is poor. Especially if you want to find a job by learning java.
We recommend that you follow the video study. The videos of MA soldiers and Sun Xin are all very good. It is okay to lay a good foundation after learning j2se.
If conditions permit, you can go to the tutoring class. It is easy to mobilize the enthusiasm of a teacher with learning and the class atmosphere. However, if you do not adapt to the fast-paced and war-like teaching in the tutoring class, you will be crazy. I personally experienced it. In his words, sitting down in a hurry, listening to books like heaven, there will be an impulse to beat people. It seems that the question is gone.
I am also learning java, followed by the video of the horse soldiers. About a month. I just finished j2se.
My personal experience is that if I read a book, I will feel very guilty and feel that I have not learned anything. Practice is required. If not. You 'd better have a computer. Programs are inseparable from computers. You need to practice more and think more. If you want to follow the video, you can't just watch it. Understanding and understanding are much inferior.
In addition, learning java cannot be impetuous and cannot be eager for success. Be calm. Be good at thinking.
These are my personal experiences. Hope to help the landlord.
You can add me. Together. If you have any questions, study them together.

JAVA Basics

If you have a poor foundation or have no foundation, I personally think that reading is poor. Especially if you want to find a job by learning java.
We recommend that you follow the video study. The videos of MA soldiers and Sun Xin are all very good. It is okay to lay a good foundation after learning j2se.
If conditions permit, you can go to the tutoring class. It is easy to mobilize the enthusiasm of a teacher with learning and the class atmosphere. However, if you do not adapt to the fast-paced and war-like teaching in the tutoring class, you will be crazy. I personally experienced it. In his words, sitting down in a hurry, listening to books like heaven, there will be an impulse to beat people. It seems that the question is gone.
I am also learning java, followed by the video of the horse soldiers. About a month. I just finished j2se.
My personal experience is that if I read a book, I will feel very guilty and feel that I have not learned anything. Practice is required. If not. You 'd better have a computer. Programs are inseparable from computers. You need to practice more and think more. If you want to follow the video, you can't just watch it. Understanding and understanding are much inferior.
In addition, learning java cannot be impetuous and cannot be eager for success. Be calm. Be good at thinking.
These are my personal experiences. Hope to help the landlord.
You can add me. Together. If you have any questions, study them together.