Java Programming Concepts and Expressions

Front

Which of the following data types is used to store a whole number in Java? Options: double, int, boolean, String

Back

int

Front

Given int x = 7; int y = 3; double z = x / y;, what is the value of z after this code executes?

Back

2.0

Front

Which of the following best describes the purpose of a variable in a Java program? Options: To perform arithmetic calculations only, To store data values that can be used and modified later, To display values on the screen, To hold comments and documentation for the code

Back

To store data values that can be used and modified later

Front

What is the value of c after executing the following code:
int a = 10;
int b = 3;
int c = a % b;

Back

1

Front

Which of the following correctly represents a boolean value in Java? YES, True, true, 1

Back

true

Front

If int n = 5;, which expression correctly casts n to a double? Options: double x = n;, double x = (int)n;, double x = (n)double;, double x = (double)n;

Back

double x = (double)n;

Front

Which of the following is not a primitive data type in Java? Options: int, double, boolean, String

Back

String

Front

The expression (double) (5 / 2) evaluates to what?

Back

2.0

Front

Which of the following lines creates a String object correctly? Options: String s = "Hello";, String s = new String();, String s = Hello;, String s = 'H';

Back

String s = "Hello";

Front

Suppose String word = "Computer";. What is returned by word.length()?

Back

8