Posted on: July 12, 2010 at 12:00 AM
Given below the sample code :
1 public class SuperClass {
2
public static void main(String[] args) {
3
System.out.println(stringConvert("0.3"));
4
System.out.println(stringConvert("0.3A"));
5
System.out.println(stringConvert(null));}
6
public static boolean stringConvert(String s) {
7
float factor = 0;
8
try {
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factor = Float.valueOf(s).floatValue();
10
return true;
11
} catch (NumberFormatException e) {
12
System.out.println("Exception in number formatting " + s);
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factor = Float.NaN;
14
} finally {
15
System.out.println("Finally");
16
}
17
return false;}
18
}
How can we correct the above code ?
1. By removing line 5
2. By removing line 4
3. No need for correction
4. by removing line 3
Answer :
(1)
Explanation :
The error due to "0.3A" is caught by the "catch" but the "null" at line 5 cause error in string conversion.
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