Given the code fragment:
What is the result?
A.
Answer = 0
B.
Invalid calculation
C.
Compilation fails only at line n1.
D.
Compilation fails only at line n2.
E.
Compilation fails only at line n1 and line2.
What is the result?
Given the code fragment:
What is the result?
this is a tricky one, if you compile it the way it is it fails at n1, if you fix n1 with ans = 0; then compile again it fails at n1 and n2.
Answer: C
package q038;
public class DivideBy0 {
//static int ans;
public static void main(String[] args) {
try {
int num = 10;
int div = 0;
int ans = num / div; //ans is local variable (in this try-block)
} catch (ArithmeticException ae) {
ans = 0; //line 1; variable ans is unknown here -> compile error! => C
} catch (Exception e) {
System.out.println(“Invalid calculation”);
}
System.out.println(“Answer = “+ ans);
}
}
Output:
Exception in thread “main” java.lang.Error: Unresolved compilation problems:
ans cannot be resolved to a variable
ans cannot be resolved to a variable
at q038.DivideBy0.main(DivideBy0.java:11)
Answer E is correct!
La respuesta correcta es la E