Miscellaneous Doubts

[Gari Jain]

QUESTION 1:

7. Given:
3. public class Bridge {
4. public enum Suits {
5. CLUBS(20), DIAMONDS(20), HEARTS(30), 

SPADES(30),
6. NOTRUMP(40) { public int getValue(int bid) {
return ((bid-1)*30)+40; } };
7. Suits(int points) { this.points = points; }
8. private int points;
9. public int getValue(int bid) { return points * bid; }
10. }
11. public static void main(String[] args) {
12. 

System.out.println(Suits.NOTRUMP.getBidValue(3));
13. System.out.println(Suits.SPADES + " " + 

Suits.SPADES.points);
14. System.out.println(Suits.values());
15. }
16. }

Which are true? (Choose all that apply.)
A. The output could contain 30
B. The output could contain @bf73fa
C. The output could contain DIAMONDS
D. Compilation fails due to an error on line 6
E. Compilation fails due to an error on line 7
F. Compilation fails due to an error on line 8

Ans: A and B
But on line 13 points is accessed wch is private then

shudnt the code fail to compile?

[Gari Jain]

QUESTION2:

public class Ouch
{
static int ouch=7;
public static void main(String args[])
{
new Ouch().go(ouch);
}
void go(int ouch)
{ouch++;
for(int ouch=3;ouch<6;ouch++)
;
System.out.print(" "+ ouch);}
}

What is the result?
A. 5 7
B. 5 8
C. 8 7
D. 8 8
E. Compilation fails
F. An exception is thrown at runtime

Ans: E

The parameter declared on line 9 is valid (although ugly), but the variable
name ouch cannot be declared again on line 11 in the same scope as the declaration on
line 9.

but isnt ouch declared inside for inside another scope?

[Wouter Oet]

First of all QuoteYourSources.

About question 1. The main method is in the same class thus has access.
About question 2. No that is not true. Because the method parameter ouch is still visible in the for loop and cannot be hidden.

[Bear Bibeault]

Also, please post individual questions in their own topics with appropriate subjects.

[sumit kothalikar]

Question 1:here we are accessing the private variable of the class from te class itself thus it has access

as explained bu Wouter Oet

About question 1. The main method is in the same class thus has access.

[Gari Jain]

Thankyou All...

The question are from(K&B)