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public class Workshop {

public static void main(String[] args) throws Exception {

//conc("Hi", null);

System.out.println(addStringsAgain("hi", "hello"));

}

private static String conc (String a, String b) throws Exception {

if (a.equals(null) || b.equals(null)) {

throw new Exception();

}

return a + b;

}

//@SuppressWarnings("finally")

private static String addStrings (String a, String b) {

String result = "";

try {

result = conc(a, b);

}

catch (Exception e) {

System.out.println("Error!");

}

finally {

return result;

}

}

private static String addStringsAgain (String a, String b) {

String result = "";

try {

result = conc(a, b);

}

catch (Exception e) {

e.printStackTrace();

result = "There is an error.";

}

finally {

return result;

}

}

private static String part5 (String a, String b, int x) throws ExceptionalStudent, ArithmeticException {

if (a.equals("Celeste"))

throw new ExceptionalStudent("Celeste!");

else if (x == 0) {

throw new ArithmeticException();

}

return a + b;

}

private static int Ted (String a, String b, int x) {

try {

part5(a, b, x);

}

catch (ExceptionalStudent e) {

System.out.println("First string is Celeste");

}

catch (ArithmeticException e) {

System.out.println("Bad Math!");

}

finally {

return 0;

}

}

}