Java OCA OCP Practice Question 969

Question

What is the result of the following statements? 

1:  public class Test { 
2:    public void print(byte x) { 
3:      System.out.print("byte"); 
4:    } // w  w  w. jav a  2s .  c  o  m
5:    public void print(int x) { 
6:      System.out.print("int"); 
7:    } 
8:    public void print(float x) { 
9:      System.out.print("float"); 
10:   } 
11:   public void print(Object x) { 
12:     System.out.print("Object"); 
13:   } 
14:   public static void main(String[] args) { 
15:     Test t = new Test(); 
16:     short s = 123; 
17:     t.print(s); 
18:     t.print(true); 
19:     t.print(6.789); 
20:   } 
21: } 

A.   bytefloatObject 
B.   intfloatObject 
C.   byteObjectfloat 
D.   intObjectfloat 
E.   intObjectObject 
F.   byteObjectObject 



E.

Note

The argument on line 17 is a short.

It can be promoted to an int, so print() on line 5 is invoked.

The argument on line 18 is a boolean.

It can be autoboxed to a boolean, so print() on line 11 is invoked.

The argument on line 19 is a double.

It can be autoboxed to a double, so print() on line 11 is invoked.

Therefore, the output is intObjectObject and the correct answer is option E.




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