If/else problem

Question

Dear all
I have looked thru the NumberformatException stuff and still havent been able to get to the bottom of this one
here is my code - max and min are initially strings .
Ive been careful to test the equals to null first to avoid the null pointer exception but now i get a number format exception and cant see why. very grateful for any help thanks
//if max is not null and min is null
if (max != null && min == null) // this bit not working generates a NFE
int value = Integer.parseInt(max);
out.println("max generated");
//     this is working if min is not null and max is
else //(min!=null && max==null)
int value = Integer.parseInt(min);
out.println("min generated");

Answer 1

I tried it it works fine for me??
String max = "0";
String min = null;
if (max != null && min == null) // this bit not working generates a NFE
int value = Integer.parseInt(max);
System.out.println("max generated");
// this is working if min is not null and max is
else if(min!=null && max==null)
int value = Integer.parseInt(min);
System.out.println("min generated");