Java OCA OCP Practice Question 179

Question

Given:

public class Main { 
  String name; //w  w  w  .j av  a2s  .c  o m
  Main(String s) { name = s; } 
  public static void main(String[] args) { 
    Main d1 = new Main("Boi"); 
    Main d2 = new Main("Tyri"); 
    System.out.print((d1 == d2) + " "); 
    Main d3 = new Main("Boi"); 
    d2 = d1; 
    System.out.print((d1 == d2) + " "); 
    System.out.print((d1 == d3) + " "); 
  } 
}

What is the result?

A. true true true
B. true true false
C. false true false
D. false true true
E. false false false
F. An exception will be thrown at runtime

C is correct.

Note

The == operator tests for reference variable equality, not object equality.

Related