CODEWITHSUNDEEP
java
Student
Student

Reputation: 4563

Java ACM JTF Package

I have a doubt in the below piece of code. I wanted to know why does the code compile and run correctly even though main method is not present?

import acm.program.*;  

public class HelloConsole extends ConsoleProgram {  

   public void run() {  
      println("hello, world");  
   }    
}

Thanks.

Upvotes: 1

Views: 272

Answers (2)

ditkin
ditkin

Reputation: 7044

Because consoleprogram extends the class program which contains a main method.

Upvotes: 0

jberg
jberg

Reputation: 4816

This is by design of the ACM program classes. See the javadocs:

The conventional pattern of use associated with the acm.program package moves students away from the imperative style of public static void maininto a more pedagogically defensible framework in which students are always working in the context of an object.

In this case you override the init/run methods as opposed to writing a main method.

Upvotes: 1

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