1: public class Squares { 2: public static long square(int x) { 3: long y = x * (long) x; 4: x = -1; 5: return y; 6: } 7: public static void main(String[] args) { 8: int value = 9; 9: long result = square(value); 10: System.out.println(value); 11: } }
❌ A. -1 ✅ B. 9 ❌ C. 81 ❌ D. Compiler error on line 9. ❌ E. Compiler error on a different line
Explanation: Since Java is pass-by-value and the variable on line 8 never gets reassigned, it stays as 9. In the method square, x starts as 9. y becomes 81 and then x gets set to –1. Line 9 does set result to 81. However, we are printing out value and that is still 9.
1: public class Squares { 2: public static long square(int x) { 3: long y = x * (long) x; 4: x = -1; 5: return y; 6: } 7: public static void main(String[] args) { 8: int value = 9; 9: long result = square(value); 10: System.out.println(value); 11: } }
❌ A. -1 ✅ B. 9 ❌ C. 81 ❌ D. Compiler error on line 9. ❌ E. Compiler error on a different line
Explanation: Since Java is pass-by-value and the variable on line 8 never gets reassigned, it stays as 9. In the method square, x starts as 9. y becomes 81 and then x gets set to –1. Line 9 does set result to 81. However, we are printing out value and that is still 9.
BY Explanations “Top Java Quiz Questions”
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