CS402 T02b

1. What would happen if you attempt to store a value of 1000 in a byte variable?

• It will store successfully.

• A compilation error occurs.

• A runtime error occurs.

• It will store the value as 127.

2. What is the correct way to represent a floating-point literal in Java?

• 100.5L

• 100

• 100.5f

• 100.5

3. What is the default type for a floating-point literal in Java?

• float

• double

• long

• byte

4. Which of the following is true about implicit casting in Java?

• It converts a double to int.

• It automatically widens a smaller type to a larger type.

• It truncates decimal places.

• It only works for int and byte types.

5. Which operator is used for incrementing a variable by 1 in Java?

• ++

• --

• +=

• ==

6. What is the output of the following code?

int i = (int) 3.9;

System.out.println(i);

• 4

• 3.9

• 3

• Compilation error

7. What will be the output of the following code?

int x = 10;

System.out.println(++x + x++);

• 11

• 20

• 21

• 22

8. Which of the following can cause a compilation error due to type incompatibility?

• long l = 100L;

• double z = 3;

• int y = 5 / 2;

• int x = 100 / 2.0;

9. What is the correct way to explicitly cast a double value to an integer?

• int x = 5.5;

• int x = double(5.5);

• int x = (5.5)int;

• int x = (int) 5.5;

10. What is the result of the following code?

int x = 5;

x += 3;

System.out.println(x);

• 0

• 3

• 5

• 8