mock exam

[Anonymous]

can anyone tell me which is the answer,

What gets printed when the following code is compiled and run with the following arguments -
java test 2
Select the one correct answers.

public class test() {
public static void main(String args[]) {
Integer intObj = Integer.valueOf(args[args.length - 1]);
int i = intObj.intValue();
if(args.length > 1)
System.out.println(i);
if(args.length > 0)
System.out.println(i - 1);
else
System.out.println(i - 2);
}
}
a. test
b. test-1
c. 0
d. 1
e. 2.
thanks in advance

[satish]

1 gets printed...Do you see anything fishy here ?

[imran malik]

Source:
1 public class test
2 {
3 public static void main(String args[])
4 {
5 Integer intObj = Integer.valueOf(args[args.length - 1]);
6 int i = intObj.intValue();
7 if(args.length > 1)
8 System.out.println(i);
9 if(args.length > 0)
10 System.out.println(i - 1);
11 else
12 System.out.println(i - 2);
13 }
14 }
Answer: out put will be 1
why:
first you correct your sentex error at line 1 i.e.
you typed public class test() insted public class test.
() are extra,becareful
line 5args.length will return 1
args[1-1]=args[0] is 2 (your argument to test)
2 will store in intobj
6so value of i will be 2
7 if(args.length > 1) will return false because args.length is 1
8by pass, no printing here
9 if(args.length > 1) will return true,printing is 1 . (i-1=2-1=1)
if you have still any confusion, please feel free to contact again
regards
Imran Jamil Malik