What is Printed?
Computer Science
Level
2
What is being printed for this code?
class Alpha {
public void print() { System.out.print("Alpha "); }
}
public class Beta extends Alpha {
public void print() { System.out.print("Beta"); }
public static void main(String[] args) {
Alpha a = new Beta();
Beta b = (Beta)a;
a.print();
b.print();
}
}
AlphaBeta
BetaBeta
AlphaAlpha
BetaAlpha
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1 solution
Here 'a' is just a reference but actual object is of type Beta .so when we are calling a.print() the output will be Beta. Next in object creation of Beta we are typecasting in to Beta .So if you call b.print() the same which called previously wiil be executed and beta will be printed.