Java OCA OCP Practice Question 1072

Question

What is the output of the following program? 

1:  public class Main { 
2:    public String name; 
3:    public void parseName() { 
4:      System.out.print("1"); 
5:      try { /*  w  w  w .  j ava2 s . c om*/
6:        System.out.print("2"); 
7:        int x = Integer.parseInt(name); 
8:        System.out.print("3"); 
9:      } catch (NullPointerException e) { 
10:       System.out.print("4"); 
11:     } 
12:     System.out.print("5"); 
13:   } 
14:   public static void main(String[] args) { 
15:     Main m = new Main(); 
16:     m.name = "Leo"; 
17:     m.parseName(); 
18:     System.out.print("6"); 
19:   } 
20: }
  • A. 12, followed by a stack trace for a NumberFormatException
  • B. 124, followed by a stack trace for a NumberFormatException
  • C. 12456
  • D. 12456
  • E. 1256, followed by a stack trace for a NumberFormatException
  • F. The code does not compile.
  • G. An uncaught exception is thrown. 


A.

Note

The parseName method is invoked on a new Main object.

Line 4 prints 1.

The try block is entered, and line 6 prints 2.

Line 7 throws a NumberFormatException.

It isn't caught, so parseName ends.

main() doesn't catch the exception either, so the program terminates and the stack trace for the NumberFormatException is printed.




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