NullPointerException should be avoided, not caught. Any situation in which NullPointerException is explicitly caught can
easily be converted to a null test, and any behavior being carried out in the catch block can easily be moved to the "is null" branch of
the conditional.
public int lengthPlus(String str) {
int len = 2;
try {
len += str.length();
}
catch (NullPointerException e) {
log.info("argument was null");
}
return len;
}
public int lengthPlus(String str) {
int len = 2;
if (str != null) {
len += str.length();
}
else {
log.info("argument was null");
}
return len;
}