Exceptions on exceptions

How would i catch the NullPointerException on
String s = e2.getClass().getName();
in this code ??




try {
    Exception e1 = null;
    System.out.println("1");
    throw e1;
} catch(Exception e2) {
    try {
        System.out.println("2");
        String s = e2.getClass().getName();
        System.out.println("s: " + s);
    } catch(Exception e3) {
        System.out.println("3");
    }
}