Explanations “Top Java Quiz Questions”

Which is true about the code?

❌ A. The first compiler error is on line A
❌ B. The first compiler error is on line B
❌ C. The first compiler error is on line C
❌ D. The first compiler error is on line D
✅ E. The code compiles successfully

Explanation:
Lambdas are only allowed to reference effectively final variables. You can tell the variable j is effectively final because adding a final keyword before it wouldn’t introduce a compile error. Each time the else statement is executed, the variable is redeclared and goes out of scope. Therefore, it is not re-assigned. Similarly, length is effectively final. There are no compile errors, and option E is correct.

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697 viewsFeb 14, 2022 at 14:06

Which is true about the code?

❌ A. The first compiler error is on line A
❌ B. The first compiler error is on line B
❌ C. The first compiler error is on line C
❌ D. The first compiler error is on line D
✅ E. The code compiles successfully

Explanation:
Lambdas are only allowed to reference effectively final variables. You can tell the variable j is effectively final because adding a final keyword before it wouldn’t introduce a compile error. Each time the else statement is executed, the variable is redeclared and goes out of scope. Therefore, it is not re-assigned. Similarly, length is effectively final. There are no compile errors, and option E is correct.

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