OCA Java SE 8 Mock Exam Review - OCA Mock Question 27

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Question

Select the correct options based on the code below

public class Main {                                          // line 1 
    public static void main(String[] args) {                 // line 2 
        int num1 = 12;                                       // line 3 
        float num2 = 17.8f;                                  // line 4 
        boolean isTrue = true;                               // line 5 
        boolean returnVal = num1 >= 12 && num2 < 4.5         // line 6 
                             || isTrue == true;
        System.out.println(returnVal);                       // line 7 
    }                                                        // line 8 
}                                                            // line 9 

a  Code prints false 
b  Code prints true 
c  Code will print true if code on line 6 is modified to the following: 

   boolean returnVal = (num1 >= 12 && num2 < 4.5) || isTrue == true; 

d  Code will print true if code on line 6 is modified to the following: 

   boolean returnVal = num1 >= 12 && (num2 < 4.5 || isTrue == false); 

Answer

Note

A is incorrect because the code prints true.

D is incorrect because the code prints false.

public class Main {
  public static void main(String[] args) {
    int num1 = 12;
    float num2 = 17.8f;
    boolean isTrue = true;
    boolean returnVal = num1 >= 12 && num2 < 4.5 || isTrue == true;
    System.out.println(returnVal);
  }
}

The code above generates the following result.

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