Mock Exam Que

[madhuri vl]

Hi,
At line 4 what value does the flag takes. According to author it takes false and hence prints Sample.
public final class Test4 implements A {
class Inner {
void test() {
if (Test4.this.flag); {
sample();
}
}
}
private boolean flag = false;
public void sample() {
System.out.println("Sample");
}
public Test4() {
(new Inner()).test();
}
public static void main(String args []) {
new Test4();
}
}

What is the result:
A. Prints out "Sample"
B. Program produces no output but terminates correctly.
C. Program does not terminate.
D. The program will not compile
Select the most appropriate answer.

[Ken Pullin]

Hi - If I've looked at it correctly, it should display "Sample" each time you execute the code. Since the ";" is after the "if (Test.this.flag)" the look stops there and the rest is just a block of code that would always get executed.

[madhuri vl]

Hi Ken,
Do you mean to say the if construct has no body and so nothing to do with flag and so sample is invoked and prints Sample.
Please reply.
Thanks,
Madhuri.

[Ken Pullin]

I don't know if I understand you correctly. Basically what I said was if you have a if statement such as:
if (true);
{
System.out.println("Whatever");
}
it doesn't matter if what value is in the if portion, because the ";" ends the "If" - the block of code is not associated with the if - does that help?>?

[madhuri vl]

Ya I got you .Thank you onceagain.
Madhuri.