Programming Tutorials

Question: Consider the following application: what value is printed at line 6?

By: Ash in Certification Tutorials on 2008-07-05  

Question: Consider the following application:

1. class Q7 {
2. public static void main(String args[]){
3. double d = 12.3;
4. Decrementer dec = new Decrementer();
5. dec.decrement(d);
6. System.out.println(d);
7. }
8. }
9.
10. class Decrementer {
11. public void decrement(double decMe){decMe = decMe - 1.0;}
12. }
What value is printed out at line 6?

A. 0.0

B. -1.0

C. 12.3

D. 11.3

Answer:C is correct. The decrement() method is passed a copy of the argument d; the copy gets decremented, but the original is untouched.

 

 

 

 





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