Java OCA OCP Practice Question 2663

Question

Given: 

3. public class Main {  
4.   public static void main(String[] args) {  
5.     Integer i = 420;  
6.     Integer i2;  
7.     Integer i3;  
8.     i2 = i.intValue();  
9.     i3 = i.valueOf(420);  
10.     System.out.println((i == i2) + " " + (i == i3));  
11. } }

What is the result?

  • A. true true
  • B. true false
  • C. false true
  • D. false false
  • E. Compilation fails.
  • F. An exception is thrown at runtime.


D is correct.

Note

In this code, lines 8 and 9 each create a new Integer object, and == tests whether two references refer to the same object.




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