kalpana appala

Hi Suresh
Congrats.. Wonderful Score

I am also thinking that one of the answers for the first snippet is 'C'.
Can anyone explain whether 'C' is correct or not???

Thanks
kalpana

I am also thinking that one of the answers for the first snippet is 'C'.
Can anyone explain whether 'C' is correct or not???

Thanks
kalpana

Hi ranchers
Sorry for the incompleted question in the previous forum. Below is the completed question
Which of the following statements is not true? a. An interface that is declared within the body of a class or interface is known as a nested interface. b. A constant can be a member of an interface. c. A class declaration can be a member of an interface. d. A class that implements an interface must implement all of the methods declared within the interface. e. None of the above.
The answer for the above code is d.
But i thought the answers are b,d . Can anyone explain why b is not a correct answer. I read that constant can be a member of an interface.

Thanks
kalpana

Hi

Which of the following statements is not true? a. An interface that is declared within the body of a class or interface is known as a nested interface. b. A constant can be a member of an interface. c. A class declaration can be a member of an interface. d. A class that implements an interface must implement all of the methods declared within the interface. e. None of the above.

Hi
class A { private void m1 (int i) { assert i < 10 : i; System.out.print(i); } public void m2 (int i) { assert i < 10 : i; System.out.print(i); } public static void main (String[] args) { A a = new A(); a.m1(11); a.m2(12); }}
For the above code one of the answers says the following is true
"The assert statements are being used to check a precondition--something that must be true when the method is invoked".
Is that statement always true??? In other words: is it a general statement?
In some other question the above statement is listed as not true.
Can someone explain the meaning of that statement and the relevance for the above code.
Thanks a bunch

Hi
Thanks for the reply. I got it now. I forgot to check the condition i++<7 when i reaches 7.

kalpana

Hi
Thanks for the reply. I got it now. I forgot to check the condition i++<7 when i reaches 7.

kalpana

Hi sricharan

Thanks for the reply. What I understood from the code is i is incremented to 2 in the first loop , to 4 in the second loop etc. May be i am seeing the code in a different way . i is incrementing twice when j--< 7 is false and while checking the condition i++ < 7. so the value of i is 6 till the third loop. Am i missing something here.
please explain it clearly.
Thanks kalpana

Hi ranchers
class JMM119 { public static void main (String[] args) { int i = 0, j = 9; do { if (j < 4) {break;} else if (j-- < 7) {continue;} i++; } while (i++ < 7); System.out.print(i + "," + j); }}
I thought the o/p is 9,3. But the answer is 8,4.Can anyone explain it clearly and i am totally confused about the increment operators .
Thanks in advance
kalpana

Could anyone explain why the following code gives complile time error.

class Level1Exception extends Exception {} class Level2Exception extends Level1Exception {} class Level3Exception extends Level2Exception {} class Purple { public static void main(String args[]) { int a,b,c,d,f,g,x; a = b = c = d = f = g = 0; x = 1; try { throw new Level1Exception(); try { switch (x) { case 1: throw new Level1Exception(); case 2: throw new Level2Exception(); case 3: throw new Level3Exception(); } a++; } catch (Level2Exception e) {b++;} finally {c++;} } catch (Level1Exception e) { d++;} catch (Exception e) {f++;} finally {g++;} System.out.print(a+","+b+","+c+","+d+","+f+","+g);

The explanation says that as the switch statement is unreachable , it gives compile time error . I dont understand that if the statements are unreachable why it is giving compile time error. Am i missing something here???

Thanks in advance

Hi Sekhar
Congrats Its a very good score.

Hi Mohana
The link is not working.Could u please send me a copy of scjp notes to this id
[email protected]
Thanks

Thanks for ur help guys
kalpana

Hi
I am new to JavaRanch.This site is very helpful.
Can any one explain why B.run() is not invoked in the following program

class A extends Thread {
public A(Runnable r) {super(r);}
public void run() {System.out.print("A");}
}
class B implements Runnable {
public void run() {System.out.print("B");}
}
class C {
public static void main(String[] args) {
new A(new B()).start();
}
}
The answer is A
I appreciate ur help
Thanks
kalpana