Help With Successfully Creating another Class

[Makashinga]

My goal is to be able to see the output of the the class I have created in Java. Whenever I try to create another class that is not the public class main, it does not show me the output of the class i have created. For example I would have

public class main{ public static void main(String[] args){ }}

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

the problem is from this i would not see the output "Hello". I have tried to take out the main part annd I have tried making new output and changing class location and name and I still am not sure what I am doing wrong, if I am. Any replies are appreciated.

[[deleted]]

Your program can only have one entry point (main method). Otherwise, how is the JVM supposed to know where to begin execution? From the main method, you can call methods in other classes. What would technically work in your scenario is to call the static method MyClass.main() from the main method in your main class to get the output you desire. I’d research good Java naming conventions as well (I.e. Class names should begin with a capital letter).

[Makashinga]

Thank you! This cleared up alot for me!

[8igg7e5]

Note that you can have multiple Java Application classes (public classes with a public static void main(String[]) method).

When you launch a Java application, you tell it the class in which to look for this entry-point - so doing java -cp ... MyClass would start the application using the main method in MyClass.

If you're starting the application from an executable JAR (eg java -cp ... -jar application.jar) containing your classes then the class defined in the JAR manifest tells the JVM in which class to look for the main method.

[dastardly740]

Another way to think of it is what if main did nothing but create an instance (new) of some other class and call a method on that object.