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What will be the output of the code?

A. Result1: 9 Result2: Hello, World!
B. Result1: 10 Result2: Hello, World!
C. Result1: 12 Result2: Hello, World!
D. Result1: 10 Result2: Hello,World!
E. Result1: 12 Result2: Hello,World!
F. Error
G. None of the above

Explanation:
1. square Function:
- Computes the square of the input: x -> x * x.

2. increment Function:
- Adds 1 to the input: x -> x + 1.

3. Function Composition (`andThen`):
- Combines square and increment:
- Input 3:
- First: 3^2 = 9.
- Then: 9 + 1 = 10.

4. Method Reference (`String::concat`):
- Concatenates strings:
concat.apply("Hello, ", "World!") -> Hello, World!.

Correct Answer: B



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What will be the output of the code?

A. Result1: 9 Result2: Hello, World!
B. Result1: 10 Result2: Hello, World!
C. Result1: 12 Result2: Hello, World!
D. Result1: 10 Result2: Hello,World!
E. Result1: 12 Result2: Hello,World!
F. Error
G. None of the above

Explanation:
1. square Function:
- Computes the square of the input: x -> x * x.

2. increment Function:
- Adds 1 to the input: x -> x + 1.

3. Function Composition (`andThen`):
- Combines square and increment:
- Input 3:
- First: 3^2 = 9.
- Then: 9 + 1 = 10.

4. Method Reference (`String::concat`):
- Concatenates strings:
concat.apply("Hello, ", "World!") -> Hello, World!.

Correct Answer: B

BY Explanations “Top Java Quiz Questions”


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