Question 1.In a Try / Catch / Finally block, what type of code goes in each bloc
ID: 3789006 • Letter: Q
Question
Question 1.In a Try / Catch / Finally block, what type of code goes in each block? In other words, what is the purpose of the code in each block?
Try
{
Which code goes here?
}
Catch
{
Which code goes here?
}
Finally
{
Which code goes here?
}
Question 2.
Determine the output of the following code when the input is:
(Provide a response for values A, B and C.)
a) –1
b) 0
c) 12XY
Scanner scanner = new Scanner(System.in);
try {
int num = scanner.nextInt();
if (num != 0) {
throw new Exception("Not zero");
}
System.out.println("I'm happy with the input.");
} catch (InputMismatchException e) {
System.out.println("Invalid Entry");
} catch (Exception e) {
System.out.println("Error: " + e.getMessage());
}
Question 4:
What will be the output from the following code?
StringBuffer word1, word2;
word1 = new StringBuffer(“Lisa”);
word2 = word1;
word2.insert(0, “Mona “);
System.out.println(word1);
Question 3.Determine the output of the following code when the input is:
(This is similar to Exercise 1, but the code here has the finally clause.)
a) –1
b) 0
c) 12XY
Scanner scanner = new Scanner(System.in);
try {
int num = scanner.nextInt();
if (num != 0) {
throw new Exception("Not zero");
}
System.out.println("I'm happy with the input.");
} catch (InputMismatchException e) {
System.out.println("Invalid Entry");
} catch (Exception e) {
System.out.println("Error: " + e.getMessage());
} finally {
System.out.println("Finally Clause Executed");
}
Explanation / Answer
1)
Try
{
Error pron code. Code that can throw exceptions
}
Catch
{
Exception handling code
}
Finally
{
Code that need to execute irrespective of whether exception has thrown or not
}
2)
a)
-1
Error: Not zero
b)
0
I'm happy with the input.
c)
12XY
Invalid Entry
3)
a)
-1
Error: Not zero
Finally Clause Executed
b)
0
I'm happy with the input.
Finally Clause Executed
c)
12XY
Invalid Entry
Finally Clause Executed
4)
Mona Lisa
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