Question

Java language.

Answer all three parts
a) What will be the output of the following program?
public class Sum {
public static void main(String[] args) {
for( int i=0, sum =0; i<=5; i++) {
sum = sum + i;
}
System.out.println(sum);
}
}
b) The following program gets user input and prints it. Say the user enters 1600 Holloway Ave. What will be the output of the program?
import java.lang.util.Scanner;
public class Sum {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
String userInput = input.next();
System.out.println(userInput);
}
}
c) What will the following expression evaluate to?
2 * 2 - 3 < 2 && 5 - 2 < 5

Answer 1

a) The output will be 15. b) The output will be '1600'. c) The expression evaluates to false.

Step-by-step explanation:

a) The output of the program will be 15. The program uses a for loop to iterate over the values of i from 0 to 5. On each iteration, the value of i is added to the variable sum. So, the sum will be 0 + 1 + 2 + 3 + 4 + 5 = 15.

b) The output of the program will be '1600'. The program uses a Scanner object to get user input and stores it in a String variable called userInput. Then, it prints the value of userInput.

c) The expression 2 * 2 - 3 < 2 && 5 - 2 < 5 will evaluate to false. Let's break it down: 2 * 2 - 3 = 1 < 2 evaluates to true, and 5 - 2 < 5 = 3 < 5 evaluates to true. However, the && operator requires both conditions to be true for the overall expression to be true. Since one condition is false, the expression will be false.