Which statement is throwing a runtime error....

[money123]

import java.util.*;
public void printStrings (List stringList) {
if (stringList != null) {
Iterator li = stringList.iterator();
while (li.hasNext()) {
System.out.println( (String) li.next());
}
}
}

Which one of the following statements highlights the assumed risk of potential run-time error in the above code?

Choice 1
System.out may have been redirected to a file rather than the terminal.

Choice 2
You do not know that stringList contains only String objects, so the cast could fail.

Choice 3
You need to check the size of the List using its size() method before accessing it so you do not read past the end of the list.

Choice 4
Since printStrings returns "void," you have no way to return a failure code.

Choice 5
The object referenced by stringList may or may not implement the iterator() method.

I have got no idea on this question.... so tx for an explaination of answer in advance........

[hardwired]

Choice 1
I don't think this would be a problem.

Choice 2
True statement.

Choice 3
Negative. Iterator takes care of this.

Choice 4
No failure code needed; we're just printing to console.

Choice 5
Unlikely. You are importing the java.util package so we'll assume that this is a java.util.List which has an iterator method/implements iterable. Of course you could have another, local (lame) List class in your classpath which does not have an iterator method.