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QUESTION

Feb 01, 2017

CMIS 141 7984 Introductory Programming (2158)

Question 1 (1 point)

According to the Google style guide, Java variable and class names should be named using UpperCamelCase.

Question 1 options:TrueFalseQuestion 2 (1 point)

Analyze the following code:

public class Test {

public static void main (String args[]) {

int i = 0;

for (i = 0; i < 10; i++);

System.out.println(i + 4);

}

Question 2 options:

The program compiles despite the semicolon (;) on the for loop line, and displays 14.

The program compiles despite the semicolon (;) on the for loop line, and displays 4.

The program has a runtime error because of the semicolon (;) on the for loop line.

The program has a compile error because of the semicolon (;) on the for loop line.

Question 3 (1 point)

What is the output of the following Java code? ____________________

public class Quizzes {

public static void main(String args[]){

String string1 = "243";

System.out.println(Integer.parseInt(string1));

}

Question 3 options:Question 4 (1 point)

What is the value of balance after the following code is executed?

int balance = 10;

while (balance >= 1) {

if (balance < 9) {

break;

}

balance = balance - 9;

}

Question 4 options:

–1

None of the above

Question 5 (1 point)

Which of the loop statements always have their body executed at least once.

Question 5 options:

The while loop

The do-while loop

The for loop

None of the above

Question 6 (1 point)

What is the output of the following Java code: ______________________.

public class Quizzes {

public static void main(String args[]){

double angle = 90;

angle = Math.toRadians(angle);

System.out.println(Math.sin(angle) + Math.pow(Math.cos(angle),2));

}

Question 6 options:Question 7 (1 point)

What is the output of the following Java code: ______________________.

public class Quizzes {

public static void main(String args[]){

int momAge = 62;

int dadAge = 64;

System.out.println(Math.max(momAge, dadAge) + Math.min(momAge, dadAge));

}

Question 7 options:Question 8 (1 point)

Which of the following expression yields an integer between 0 and 100, inclusive?

Question 8 options:

(int)(Math.random() * 101)

int)(Math.random() * 100)

(int)(Math.random() * 100) + 1

(int)(Math.random() * 100 + 1)

Question 9 (1 point)

What is the output of the following Java code: ______________________.

public class Quizzes {

public static void main(String args[]){

double length = 81;

double width = 144;

System.out.println(Math.sqrt(length) + Math.sqrt(width));

}

Question 9 options:Question 10 (1 point)

Analyze the following code.

int x = 0;

if (x > 0);

{

System.out.println("x");

}

Question 10 options:

The symbol x is never printed.

The value of variable x is printed once.

No output is produced.

The symbol x is printed once.

Question 11 (1 point)

What is the value of balance after the following code is executed?

int balance = 10;

while (balance >= 1) {

if (balance < 9) {

continue;

}

balance = balance - 9;

}

Question 11 options:

The loop does not end

-1

Question 12 (1 point)

Using the Google style guide document, select the proper declaration of a Java constant.

Question 12 options:

int CONSTANT SPEED = 3.0;

double final SPEED = 3.0;

float FINAL speed = 3.0;

Final SPEED = 3.0;

None of the above

Question 13 (1 point)

Analyze the following code.

int x = 1;

while (0 < x) && (x < 100)

System.out.println(x++);

Question 13 options:

The number 2 to 100 are displayed.

The code does not compile because the loop body is not in the braces.

The number 1 to 99 are displayed.

The code does not compile because (0 < x) & (x < 100) is not enclosed in a pair of parentheses.

The loop runs for ever.

Question 14 (1 point)

How many times will the following code print "Welcome to Java"?

int count = 0;

do {

System.out.println("Welcome to Java");

count++;

} while (count < 10);

Question 14 options:

Question 15 (1 point)

Which of the following values would read using the Scanner nextShort() without producing an error?

Question 15 options:

32768

-32768

-100000

100000

None of the above

Question 16 (1 point)

What is the output of the following code:

int x = 9;

int y = 8;

int z = 7;

if (x > 9) {

if (y > 8){

System.out.println("x > 9 and y > 8");

}

else if (z >= 7){

System.out.println("x <= 9 and z >= 7");

}

else {

System.out.println("x <= 9 and z < 7");

}

Question 16 options:

x > 9 and y > 8

x <= 9 and z >= 7

x <= 9 and z < 7

None of the above

Question 17 (1 point)

How many times does the following loop iterate?

public class Quizzes {

public static void main(String args[]){

int cnt = 1;

int maxLoop = 30;

while (cnt < maxLoop) {

if (cnt==3) {

break;

}

cnt++;

}

Question 17 options:Question 18 (1 point)

What is the output of the following Java code? ___________________

public class Quizzes {

public static void main(String args[]){

String string1 = "CMIS141 ";

String string2 = "is all";

String string3 = "about Java!";

String concat = string3.concat(string2).concat(string1);

System.out.println(concat.length());

}

Question 18 options:Question 19 (1 point)

What is the output of the following Java code: ____________________.

public class Quizzes {

public static void main(String args[]){

double examAvg = 85.9983;

System.out.println(Math.ceil(examAvg));

}

Question 19 options:Question 20 (1 point)

What is the output of the following fragment?

int i = 1;

int j = 1;

while (i < 5) {

i++;

j = j * 2;

}

System.out.println(j);

Question 20 options:

Question 21 (1 point)

What method would you use in the Scanner class to read an int from standard input in Java?

Question 21 options:

nextBoolean();

nextFloat();

nextByte();

nextInt();

None of the above

Question 22 (1 point)

What is y after the following for loop statement is executed?

int y = 0;

for (int i = 0; i < 10; i++) {

y += 1;

}

Question 22 options:

None of the above.

Question 23 (1 point)

The following Java code contains valid brace placement according to the Google style guide

public class MyClass {

public static void main(String[] args)

{

System.out.println("Welcome to CMIS 141");

} // End of main

} // End class

Question 23 options:TrueFalseQuestion 24 (1 point)

Analyze the following two code fragments.

(i)

int x = 5;

if (0 < x) && (x < 100)

System.out.println("x is between 1 and 100");

(ii)

int x = 5;

if (0 < x && x < 100)

System.out.println("x is between 1 and 100");

Question 24 options:

The first fragment has a syntax error on the second line.

The second fragment has a syntax error on the second line.

Both fragments produce the same output.

Both fragments compile, but produce different result.

None of the above.

Question 25 (1 point)

How would you construct an instance of scanner class that will read from the standard input (keyboard) in Java?

Question 25 options:

Scanner scannerIn = new ScannerIn();

Scanner myOut = new Scanner();

Scanner myOut = new Scanner(Standard.Input);

Scanner myOut = new Scanner(Standard.io);

None of the above