My first blog 1.0（beta）

Use JAVA to write a HelloWorld

Step 1：Download a JDK

website：http://www.oracle.com/technetwork/java/javase/downloads/index.html
and install it to your system（the detailed process is solved by yourself）

Step 2：Configure the environment

Reference the website:
https://jingyan.baidu.com/article/6dad5075d1dc40a123e36ea3.html

Step 3：

Create a HelloWorld.txt profile. Then input the following code in it

public class HelloWorld {
    public static void main(String[] args){
        System.out.println("Hello world!");
        }
}

save it.
And change its suffix name,such as Helloworld.java.

Step 4：Input commands to run the Helloworld.java

Press windows+R,and input “cmd”.
Then input the following commands in sequence:
“src” enter
“javac Helloworld.java” enter
“java HelloWorld” enter
and then you will see Hello World!