I can't run java program from the CMD my paths may be we

May 25, 2023

I’m trying to run Welcome.java program from the cmd

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

Before I mention what I have been trying, when I type where java into cmd I get two different paths

C:\Program Files\Common Files\Oracle\Java\javapath\java.exe
D:\java\jdk\bin\java.exe

First I set my current directory to where welcome.java is.

C:\Users\user_name\Desktop

Then I check if the file exists and it does.

dir

Then I try to compile the file by typing

javac Welcome.java

Then I check again to see if welcome.class has been created, I think the issue might be here since I dont see any welcome.class file. I don’t know if this is because something is wrong with my paths.

dir

Then I attempt to run the java interpreter

java Welcome

After this I don’t see any output, it just returns to the next system prompt.

>Solution :

To execute these 2 command, you must to configure your system variables.

You must to add into your path variable D:\java\jdk\bin or %JAVA_HOME%\bin.
You should configure JAVA_HOME creating one new system variable: JAVA_HOME=D:\java\jdk

To add this variables you can follow this link: https://docs.oracle.com/en/database/oracle/machine-learning/oml4r/1.5.1/oread/creating-and-modifying-environment-variables-on-windows.html#GUID-DD6F9982-60D5-48F6-8270-A27EC53807D0

You have to restart your PC to load the changes.

Then, execute:

javac Welcome.java

This command should create one Welcome.class in the same directory.
Fianlly, You can execute the command

java Welcome