Chapter 2 : Elementary Programming Questions and answers, Graded A+/ 2024/25 Exam PREDICTOR PAPER

Chapter 2 : Elementary Programming
Questions and answers, Graded A+


_______ is the code with natural language mixed with Java code.


A. Java program


B. A Java statement


C. Pseudocode


D. A flowchart diagram - ✔✔-Pseudocode




What is the exact output of the following code?


double area = 3.5;


System.out.print("area");


System.out.print(area);


A. 3.53.5


B. 3.5 3.5


C. area3.5


D. area 3.5 - ✔✔-area3.5

,Suppose a Scanner object is created as follows, what method do you use to read a real number?


Scanner input = new Scanner(System.in);


A. input.nextDouble();


B. input.nextdouble();


C. input.double();


D. input.Double(); - ✔✔-input.nextdouble();




The following code fragment reads in two numbers:


Scanner input = new Scanner(System.in);


int i = input.nextInt();


double d = input.nextDouble();


What is the incorrect way to enter these two numbers?


A. Enter an integer, a space, a double value, and then the Enter key.


B. Enter an integer, two spaces, a double value, and then the Enter key.


C. Enter an integer, an Enter key, a double value, and then the Enter key.


D. Enter a numeric value with a decimal point, a space, an integer, and then the Enter key. - ✔✔-Enter a

numeric value with a decimal point, a space, an integer, and then the Enter key.




If you enter 1 2 3, when you run this program, what will be the output?import java.util.Scanner;

, public class Test1 {


public static void main(String[] args) {


Scanner input = new Scanner(System.in);


System.out.print("Enter three numbers: ");


double number1 input.nextDouble();


double number2 = input.nextDouble();


double number3 = input.nextDouble();


// Compute average


double average = (number1 + number2 + number3) / 3;


// Display result


System.out.println(average);


}


}


A. 1.0


B. 2.0


C. 3.0


D. 4.0 - ✔✔-2.0




Every letter in a Java keyword is in lowercase?