What does the keyword-- @Override means ,only for enhancing the code readability?

Question

class Machine
{
public void start()
{System.out.println("Starting.....");}
}
public static void main ( String[]args)
{
Machine m1=new Machine ()
{
@Override public void start ()
{System.out.println("Woohoo....");}
};
Machine m2=new Machine();
m2.start();
}

Answer 1

No, it does more than just add a readability annotation. It will throw an error during compilation if the following method does not match a signature to override. Where without the annotation a new method would be created, this will ensure that it is correctly overriding a method so that the intended action occurs.