1z0-829 Exam - Question 7

Question

Given:What is the result?

Examice · Accepted Answer

The given code defines an enum 'Forecast' with three constants: SUNNY, CLOUDY, and RAINY. The toString method is overridden to return 'SNOWY' for any constant of this enum. In the main method, 'Forecast.SUNNY.ordinal()' is called, which returns the index of SUNNY, which is 0. Then 'Forecast.valueOf("cloudy".toUpperCase())' is evaluated, which converts 'cloudy' to 'CLOUDY' and retrieves the CLOUDY enum constant. Because the toString method is overridden, it returns 'SNOWY' when CLOUDY is printed. Therefore, the output is '0 SNOWY'.

james2033 · Answer

package q07;

public class Weather {

public enum Forecast {
        SUNNY, CLOUDY, RAINY;

@Override
        public String toString() {
            return "SNOWY";
        }
    }

public static void main(String[] args) {
        System.out.print(Forecast.SUNNY.ordinal() + " ");
        System.out.print(Forecast.valueOf("cloudy".toUpperCase()));
    }
}

// Result:
// 0 SNOWY

minhdev · Answer

C is correct answer. 
Explanation: 
ordinal() -> get the index of enum_value - 0
valueOf(CLOUDY) = CLOUDY, but it prints a enum -> toString is called -> SNOWY

Samps · Answer

C is correct

Uteman · Answer

C is the correct answer

1z0-829 Exam - Question 7

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