Java First program--hello world

Hello World

　　If you do not download the JDK and configure the environment variables of the new please Baidu, the tutorial is very detailed (see: https://jingyan.baidu.com/article/6dad5075d1dc40a123e36ea3.html)

　　This tutorial is a eclipse,:https://www.eclipse.org/downloads/eclipse-packages/, please choose Java EE version, easy to follow up learning!

The above things are ready to go straight to the point, first Welcome to the world of Java! If you have a friend or classmate who learns other programming languages, you must know that the first program to get started is Hello World, why? Because the world is divided into two categories of people: the first type of people will be binary, the second type is not binary people! Well, in fact, I opened a joke, specifically why the entry process is "Hello Wold", I did not specifically please understand, if interested can Baidu, I believe the answer than I said more clearly. Nonsense, let's build a Java project.

Create a new Java project

　　

　　

　　

　　

　　

　　Step: file--"new--" Java Project (if not from other. Find)--"src--" class file!

Program

　　

The source code and comments have been made very clear, it is necessary to emphasize again that many people may not understand what is the main function, public (common), static (static), empty (void). For beginners These can be put first, do not delve into, the following article will continue

Add that, even if you follow the map to run the program, then congratulations, you really in the binary world took an important first step.

　　

　　

　　

Java First program--hello world