Java Quiz-2

What is the output of the following code?

• 40, 30

• 40, 40

• 30, 40

• 30, 30

What is the output of the following code?

• 15, 25

• 15, 15

• 25, 15

• 25, 25

What is the output of the following code?

• 12.0, 12.0

• 15.0, 12

• Compile Error

• 15.0, 15.0

Answer explanation

We can not assign double into the int variable. It will give the compile-time error.

Which one will NOT compile?

• byte b1; byte b2;

• int K, int L;

• short s1, s2, s3 = 5;

• long L1 = 4, L2, L3 = 7;

Answer explanation

When we declare the variable with the data type, we don't need to provide the data type again. That's why --> int K, int L; <-- will give a compile-time error. We should do --> int K, L ; <--

If one value is int and the other is decimal, java will automatically promote int to the decimal point value's data type

• True

• False

What will be the data type for x / y?

• short

• byte

• int

• long

What is the data type of x / y * z?

• long

• double

• float

• short

If the operator is placed after the value (n++), this case first original value will be used before the increase

• True

• False

What is the output of the given code?

• 2

• 3

• 4

• 5

Answer explanation

We are not printing the L, we are printing the K. We should take a look at the value of the K after using the unary operators.

What is the output of the given code?

• -4

• 6

• -6

• 4

Answer explanation

We are printing the result of L in this code. You should apply the unary operators for the K and find the solution.