Class Declaration with One Method in Java

A class declaration can contain a single method. A program that demonstrates this is given as follows:

Example

 Live Demo

class Message {
   public void messagePrint() {
      System.out.println("This is a class with a single method");
   }
}
public class Demo {
   public static void main(String args[]) {
      Message m = new Message();
      m.messagePrint();
   }
}

Output

This is a class with a single method

Now let us understand the above program.

The Message class is created with a single member function messagePrint(). A code snippet which demonstrates this is as follows −

class Message {
   public void messagePrint() {
      System.out.println("This is a class with a single method");
   }
}

In the main() method, an object m of class Message is created. Then messagePrint() method is called. A code snippet which demonstrates this is as follows −

public class Demo {
   public static void main(String args[]) {
      Message m = new Message();
      m.messagePrint();
   }
}