Question

With a Scanner object created as follows, what method do you use to read an int value?

Scanner input = new Scanner(System.in);

	A.	input.int();
	B.	input.nextInt();
	C.	input.integer();
	D.	input.nextInteger(); What is the output of the following code? x = 0; if (x > 0) System.out.println("x is greater than 0"); else if (x < 0) System.out.println("x is less than 0"); else System.out.println("x equals 0"); A. x is greater than 0 B. x is less than 0 C. x equals 0 D. None The following loop displays ________. for (int i = 1; i <= 10; i++) { System.out.print(i + " "); i++ } A. 1 3 5 7 9 B. 1 2 3 4 5 C. 1 2 3 4 5 6 7 8 9 10 D. 1 2 3 4 5 6 7 8 9 The main method header is written as ________. A. public static void Main(String[] args) B. public static void main(String[] args) C. public static void main(string[] args) D. public void main(String[] args) What is y after the following switch statement is executed? int x = 3; int y = 4; switch(x + 3) { case 6: y = 0; case 7: y = 1; default: y += 1; } A. 0 B. 4 C. 1 D. 2 Which of the following is the best for generating random integer 0 or 1? A. (int)(Math.random() + 0.5) B. (int)Math.random() C. (int)(Math.random() + 0.2) D. (int)Math.random() + 1 What is the printout of the following code? double x = 5.5; int y = (int)x; System.out.println("x is " + x + " and y is " + y); A. x is 6 and y is 6 B. x is 5.5 and y is 5.0 C. x is 5.5 and y is 5 D. x is 6.0 and y is 6.0 Math.pow(2, 3) returns ________. A. 9.0 B. 8 C. 9 D. 8.0 What is the printout of the following code: double x = 10.1; int y = (int)x; System.out.println("x is " + x + " and y is " + y); A. x is 10.1 and y is 10.0 B. x is 10 and y is 10 C. x is 10.1 and y is 10 D. x is 10.0 and y is 10.0 Analyze the following code: if (x < 100) && (x > 10) System.out.println("x is between 10 and 100"); A. The statement has compile errors because (x < 100) && (x > 10) must be enclosed inside parentheses. B. The statement has compile errors because (x < 100) && (x > 10) must be enclosed inside parentheses and the println(...) statement must be put inside a block. C. The statement compiles fine, but has a runtime error. D. The statement compiles fine. What is the value in count after the following loop is executed? int count = 0; do { System.out.println("Welcome to Java"); } while (count++ < 9); A. 10 B. 11 C. 0 D. 9 Which of the following operators has the highest precedence? A. * B. / C. + D. casting The not equal comparison operator in Java is ________. A. ^= B. <> C. != D. != = Suppose x = 1, y = -1, and z = 1. What is the printout of the following code? if (x < 0) if (y < 0) System.out. println("x < 0 and y < 0"); else if (z < 0) System.out. println("x < 0 and z < 0"); else System.out. println("x < 0 and z > 0"); A. x > 0 and y > 0; B. x < 0 and z > 0; C. x < 0 and z < 0; D. no printout. Suppose the input for number is 9. What is the output from running the following program? import java. util.Scanner; public class Test { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.print("Enter an integer: "); int number = input. nextInt(): int i; boolean isPrime = true; for (i = 2; i < number && isPrime; i++) { if (number % i == 0) isPrime = false; } System.out. println("i is " + i); System.out. println(number + " is" ( isPrime ? "" : " not") + " prime"); } A. i is 3 followed by 9 is prime B. i is 3 followed by 9 is not prime C. i is 4 followed by 9 is prime D. i is 4 followed by 9 is not prime

Answer 1

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

Question 1 :

Answer : B.input.nextInt();

Explanation :Here a new program with name "main.java" is created which contains following code

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Question 2 :

Answer :c.x equals 0

Explanation :Here a new program with name main.java is created which contains following code

main.java :

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Question 3 :

Answer :A.1 3 5 7 9

Explanation :Here value of i is incremented with for loop and in the loop body after printing value of i hence the answer.

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Question 4 :

Answer :B.public static void main(String[] args)

Explanation :in method name m should be small and S should be capital.Kindly refer above screens.

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Question 5 :

Answer :D.2

Explanation :Here to the switch x+3 is passed hence case 6 will be executed x=0 but no break is given after each case hence case 7 and default case will execute.Hence y=2.Refer below screen

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Question 7 :

Answer :c.x is 5.5 and y is 5

Explanation :Here x is of double type and x is parsed into int and assigned to integer y hence y=5.Refer below screen

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Question 8 :

Answer :D.8.0

Explanation :Refer below screen

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Question 9 :

Answer :c.x is 10.1 and y is 10

Explanation :Here x is of double type and y is of int type.Kindly refer below screen

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Question 10 :

Answer :A.The statement has compile errors because (x < 100) && (x > 10) must be enclosed inside parentheses.

Explanation :

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Question 11 :

Answer :A.10

Explanation :Here a program with name "main.java" is created which contains following code

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Question :

Answer :C.!=

Explanation :The not equal comparison operator in Java is !=

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Question :

Answer :D.i is 4 followed by 9 is not prime

Explanation :

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