You can use any text editor, from Windows Notepad to more advanced ones like Notepad++ or Visual Studio Code.
You can also use integrated development environments like Eclipse or NetBeans to develop Java programs.
Create a new file named HelloWorld.java and write the following code:
public class HelloWorld { public static void main(String[] args) { System.out.println("Hello world"); } }
Open a console and run the following command to compile a .java file into a .class file that will be executed on the Java virtual machine:
javac HelloWorld.java
A .class file is generated, which will be executed on the Java virtual machine:
To run the program, you just need to execute the following command using the .class file generated in the previous step:
java HelloWorld
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