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Mock question

Ranch Hand

Joined: Nov 22, 2008
Posts: 18944
class Test001
int i;
public Test001(int i) { this.i = i; }
public String toString()
if(i == 0) return null;
else return "" + i;
public static void main(String[ ] args)
Test001 t1 = new Test001(0);
Test001 t2 = new Test001(2);
System.out.println(t1); //1
System.out.println(t2); //2
The code compiles but throws exception when run but I don�t understand why. Can someone explain me.
Thank you in advance.
Jose Botella
Ranch Hand

Joined: Jul 03, 2001
Posts: 2120
The answer in this thread

SCJP2. Please Indent your code using UBB Code
I agree. Here's the link:
subject: Mock question
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