The _______ consists of two dates: the first and last on which the certificate is valid.

What is the output of the following code?

``` public class Test { public static void main(String[] args) { String s1 = new String("Welcome to Java!"); String s2 = s1.toUpperCase(); if (s1 == s2) System.out.println("s1 and s2 reference to the same String object"); else if (s1.equals(s2)) System.out.println("s1 and s2 have the same contents"); else System.out.println("s1 and s2 have different contents"); } } ``` a. s1 and s2 reference to the same String object b. s1 and s2 have the same contents c. s1 and s2 have different contents

What happens if no catch handler matches the type of a thrown object?

What will be an ideal response?