Java multiple choice question ___1.Consider the following statements. double x;

Question

Java multiple choice question

___1.Consider the following statements.

double x;

String y;

y = String.format("%.2f", x);

If x = 43.579, what is the value of y?

A."43" B."43.57" C. "43.58" D. none of these

___2. Which of the following is correct syntax for a Java comment block?

A.# Enter Comments Here

B. Enter Comments Here

C. /*Enter Comments Here*/

D. **Enter Comments Here**

___3. Suppose that x, y and z are int variables. The expression x(y+z) in Java is written as ____.

A. x * y + z          B. x * (y + z)       C. y + x * z           D. None of these

____4. Suppose that x is an int variable. Which of the following expression always evaluates to true?

A. (x > 0) || ( x <= 0) B. (x > 0) || (x == 0) C. (x > 0) && ( x <= 0) D.(x > 0) && (x == 0)

____5. What is the value of counter after the following statements executes?

int counter = 0;

while (counter <= 50) {

counter = counter + 1;

}

A. 48       B.50      C.51      D.53

____6. What is the output of the following Java code?

int j;

for (j = 10; j <= 10; j++)

System.out.print(j + " ");

System.out.println(j);

A.10      B. 10 10      C. 10 11       D. 11 11

____7. Which of the following loops is guaranteed to execute at least once?

A. counter-controlled while loop

B. for loop

C. do...while loop

D. sentinel-controlled while loop

____8. Which of the following is the loop condition in the following for loop?

for (i = 1; i < 20; i++)

System.out.println("Hello World");

System.out.println("!");

A.i = 1; B. i<20;      C. i++      D. System.out.println("Hello World");

____9. Given

int one; double two; boolean four;

which of the following assignment statements are valid?

(i) xx = 7 + 3 % 4;

(ii) 2.3 + 3.5 = two;

(iii) four = (2 <= 3);

A. Only (i) is valid

B. (i) and (ii) are valid

C. (ii) and (iii) are valid

D. only (iii) is valid

____10. What is the output of the following program segment?

int x = 14;

int y = 60;

while (((y - x) % 3) != 0) {

System.out.print(y + " ");

y = y - 5;

}

System.out.println();

A. 60 55 B. 60 55 50 C. 60 55 50 45 D. None of these

Explanation / Answer

43.58

/*Enter Comments Here*/

B. x * (y + z)

(x > 0) || ( x <= 0)

51

C. 10 11

C. do...while loop

B. i<20;

D. only (iii) is valid

A. 60 55

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