Java First Class

1. Installation

2. Writing Java programs

First, create a new text document, change the suffix to. java, and then a file name, in English, such as: Hello.

Then, edit the code as follows:

Class Hello

{

public static void Main (string[] args)

{

System.out.println ("123");

}

}

And that's 123 to show.

Note: String, System case.

Finally, press and hold shift right-click on the Created folder and click here to open the command window, which pops up

Then enter: Javac Hello.java(This sentence is: Edit Hello file generated class file), click Enter,

Then enter: Java Hello (the content under the Hello method under Class)

Java First Class