SCJP Module-4 Question-19
The program given checks tests your knowledge for method overriding in core Java.
The program given checks tests your knowledge for method overriding in core Java.Given below the sample code :
import java.io.IOException;
class Example7 {
public float Twin(float x, float y)
throws IOException {
return 0;
}
}
class SubExample7 extends Example7 {
float Twin(float x, float y) {
return 0;
}
}
How can we correct above code ?
1. no need for correction.
2. By changing the method's argument name
3. By removing overridden method 's access specifier(i.e public).
4. By adding access specifier 'public' to the overriding method.
Answer :
(3) & (4).
Explanation :
The overriding method must not limit access more than the overridden method i.e. the 'Twin' method in "Subexample7" doesn't have "public" access specifier.
