Explanations “Top Java Quiz Questions”

What is the output of the program?

❌ A. 1-11-2
✅ B. 3.0-11.0-2
❌ C. 1.0-11.0-3
❌ D. 3.0-13.0-3
❌ E. 3.0f-12-2
❌ F. The code does not compile because one of assignments requires an explicit numeric cast

Explanation:
Initially, moon is assigned a value of 9, while star is assigned a value of 8. The multiplication operator (*) has a higher order of precedence than the addition operator (+), so it gets evaluated first. Since star is not greater than 10, sun is assigned a value of 3, which is promoted to 3.0f as part of the assignment. The value of jupiter is (3.0f + 9) - 1.0, which is 11.0f. This value is implicitly promoted to double when it is assigned. In the last assignment, moon is predecremented from 9 to 8, with the value of the expression returned as 8. Since 8 is less than or equal to 8 is true, mars is set to a value of 2. The final output is 3.0-11.0-2, making option B the correct answer. Note that while Java outputs the decimal for both float and double values, it does not output the f for float values.

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444 viewsAug 3, 2021 at 09:26

What is the output of the program?

❌ A. 1-11-2
✅ B. 3.0-11.0-2
❌ C. 1.0-11.0-3
❌ D. 3.0-13.0-3
❌ E. 3.0f-12-2
❌ F. The code does not compile because one of assignments requires an explicit numeric cast

Explanation:
Initially, moon is assigned a value of 9, while star is assigned a value of 8. The multiplication operator (*) has a higher order of precedence than the addition operator (+), so it gets evaluated first. Since star is not greater than 10, sun is assigned a value of 3, which is promoted to 3.0f as part of the assignment. The value of jupiter is (3.0f + 9) - 1.0, which is 11.0f. This value is implicitly promoted to double when it is assigned. In the last assignment, moon is predecremented from 9 to 8, with the value of the expression returned as 8. Since 8 is less than or equal to 8 is true, mars is set to a value of 2. The final output is 3.0-11.0-2, making option B the correct answer. Note that while Java outputs the decimal for both float and double values, it does not output the f for float values.

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