자격증/OCJP_ExamB

QUESTION 24

IT grow. 2018. 7. 10. 16:14
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QUESTION 24 


Given: 

 

1. public class A { 

2.     public void doit() { 

3.     } 

4.     public String doit() { 

5.         return "a"; 

6.     } 

7.     public double doit(int x) { 

8.         return 1.0; 

9.     } 

10. } 

 

What is the result? 

 

A. An exception is thrown at runtime. 

B. Compilation fails because of an error in line 7. 

C. Compilation fails because of an error in line 4. 

D. Compilation succeeds and no runtime errors with class A occur. 


Solution : C 




plus imformation 


Main.java:4: 

doit() is already defined in A     

public String doit() {

                   ^ 1 error



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