Parsing a string to integer gives 0 in Integer

Question

Hi ,
try
usid = Integer.valueOf(usi).intValue();
catch(NumberFormatException e)
     text = "NUMber";
in the above code the value of usi is 4
then parsing it is giving me 0 in usid
try
usid = Integer.parseInt(usi);
catch(NumberFormatException e)
     text = "NUMber";
I also tried the above code the result is same

Answer 1

Also the OP didn't say which version of JDK he was using.
With JavaSE5 and JavaSE6 , there's a new feature called autoboxing , which eliminates the need to cast from a String to an Integer , and then to get an int value .
Insead one could simply write code like this and i works:
Integer someInteger = 123;
int anInt = 555;
someInteger = anInt; 
anInt = someInteger;Autoboxing and Autounboxing : http://java.sun.com/j2se/1.5.0/docs/guide/language/autoboxing.html
But the article further adds:
So when should you use autoboxing and unboxing? Use them only when there is an �impedance mismatch� between reference types and primitives, for example, when you have to put numerical values into a collection. It is not appropriate to use autoboxing and unboxing for scientific computing, or other performance-sensitive numerical code. An Integer is not a substitute for an int; autoboxing and unboxing blur the distinction between primitive types and reference types, but they do not eliminate it.
Message was edited by:
appy77