Which of the following is used to indicate a new line t

Which of the following is used to indicate a new line?

\\\'

\\\"

\

\\t

\\\\

Which of the following is a legal variable name in Java?

test.1

the answer

char

ans

3average

Assuming that scan is a properly initialized Scanner variable, which of the following correctly inputs a String?

String val = scan.nextValue();

String val = scan.nextInt();

String val = scan.nextDouble();

String val = nextDouble();

String val = scan.nextLine();

Which of the following is NOT a primitive data type?

All of the above are primitive data types

double

int

String

char

Put the following data types in order from smallest to largest (in terms of memory used).

double, char, int, String

int, char, double, String

char, int, double, String

double, int, char, String

int, double, char, String

Which of the following is modular division NOT used for?

time calculations

testing even and odd numbers

converting decimals to whole numbers

money calculations

patterns

What is ( 6 % 2 ) * 7?

0

1

7

14

21

What is output?

System.out.println(\"The answer is: \" + 5 + 19);

The answer is: 519

The answer is: 19

The answer is: 24

The answer is: 5 19

Error - Strings cannot do calculations.

Consider the following code:

int c = 3 – 37 % 2;
System.out.println ( c );

What is output?

-18

2

3

8

15.5

Which of the following variable assignments is legal in Java?

double n = 3;

int x = 5.0/2;

String w = 82.5;

int q = 82.3847;

char l = \"G\";

Which character below is not allowed in a variable name?

_

W

q

3

&

Which is the best way to avoid roundoff error?

Use booleans for calculations.

Convert double values to ints and do calculations using integers.

Convert int values to doubles and do calculations using doubles.

Convert char values to doubles and do calculations using doubles.

Do all calculations using doubles.

Which of the following correctly stores the word umbrella in a variable called stuff?

String umbrella = \"stuff\";

String \"stuff\" = \"umbrella\";

String stuff = umbrella;

String stuff = \"umbrella\";

String umbrella = stuff;

What is wrong with the following code?

double x = 7.4549;

The decimal portion will be truncated.

Decimals can only have 2 places.

Floats cannot be inputted from the keyboard with out using the wrapper classes.

You must cast since integers hold less information than doubles.

There is nothing wrong.

Which of the following would properly create A and B as integer variables?

A, B int;

int A B;

int A, B;

int A; B;

int AB;

Consider the following code:

double x = -97.6;
System.out.println(Math.abs(x));

What is output?

-98

-97.6

-96

97.6

98

What is the result of compiling and running the following code?

int s = Math.sqrt(26);

5

5.0

5.09901951359278

6

Error: possible loss of precision

Correct the following code:

char q = -82;

char q = (char)Math.sqrt(-82);

char q = int(-82);

char q =(int) -82;

char q =(char)Math.abs(-82);

No changes, the code is fine.

Consider the following variable declaration:

int val = 13.2;

Does this need a cast to avoid a compiler error? ______ If so, what should you type to cast? ______

no, none

yes, (decimal)

yes, (double)

yes, (int)

yes, (String)

What is output?

int x = 9;
System.out.println( x / 2);

0

4

4.5

5

9

Solution

Answer:

Which of the following is used to indicate a new line?

\

Which of the following is a legal variable name in Java?

Char

Assuming that scan is a properly initialized Scanner variable, which of the following correctly inputs a String?

String val = scan.nextLine();

Which of the following is NOT a primitive data type?

String