Two public classes in one file java

Question

Ok, this might be kiddies question in java. We can\'t define two public classes in one file. But, in one of the examples from the book SCJP study guide, this example was men

Answer 1

Yes you can have two classes in the same file. You can have them by removing the public access modifier from both the class name, like shown below,

abstract class A{
    public abstract void show(String data);
}

class B extends A{
    public void show(String data){
        System.out.println("The string data is "+data);
    }
    public static void main(String [] args){
        B b = new B();
        b.show("Some sample string data");
    }
}