while statement error

[Sachin Kapoor]

The question is which line is first to cause an error?

1 class Char
2 {
3 public static void main(String arg[])
4 {
5 while(false)
6 {
7 System.out.println("Hello");
8 }
9 while(false)
10 {
11 }
12 do;
13 while(false);
14 do
15 {
16 ;
17 }
18 while(false);
19 }
20 }

Choices are
1. Line no. 5
2. Line no. 9
3. Line no. 12
4. Line no. 16

Answer is Choice 1 is correct. It will give you error for unreached statement. All other statements are valid.

Does anyone know why exactly does line 5 give an error? If there is some code inside a while(false) loop, does it always give an error?

[Burkhard Hassel]

Yes, all these are unreacheable code, if there is really code in between the brackets does not matter:

while(false)
[B];[/B]
 
while(false) {}
 
while(false){
System.out.println(5);
}

Yours,
Bu.

[raghu nagabandi]

it always give compile time error