How to use java notepad

How to use java notepad?

Create a new document on the desktop, rename "HelloWorld", and change the txt suffix to "java".

Recommended tutorial: "java learning"

Edit the content of "HelloWorld.java":

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

Save the file and put it into the D drive (the path is optional).

Note: "System.out.println("xxx");" is the output statement, and "xxx" can be any other content.

Enter the "CMD" command in the start bar of the computer to open the DOS command line:

DOS command> D: (Press Enter to enter the root directory of the D drive )

DOS Command> dir (Press Enter to view the files in the current directory)

DOS Command> javac HelloWorld.java (Press Enter to compile the .java source file)

DOS command> java HelloWorld (Press Enter, load and run the .class bytecode file)

The content displays: welcome to baidu!!!

##Notes

You need to install the Java running tool JDK first.

Configure the environment variables required by the JDK.

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