NetBeans 6.0 RC2:

The behavior of "Surround with try {..." is different from NetBeans 5.5.1.
In NB5.5.1, "int a;" will be moved to outside try {}.

Source :
--
public class Main {
    public Main() {
        int a = Integer.parseInt("5");
        System.out.println(a);
    }
}
--

Result NB6.0:
--
public class Main {
    public Main() {
        try {
            int a = Integer.parseInt("5");

        } catch (NumberFormatException numberFormatException) {
        }

        System.out.println(a);
    }
}
--

Result NB5.5.1:
--
public class Main {
    public Main() {
        int a;
        try {
            a = Integer.parseInt("5");
        } catch (NumberFormatException ex) {
            ex.printStackTrace();
        }
        System.out.println(a);
    }
}
--