Multiple Choice | Object Oriented Programming with Java

What type of loop should we use to request 10 numbers from the user as input?

A while loop
A for loop
A do while loop
You do not need a loop for this

What type of loop is depicted below?

A while loop
A for loop
A do while loop
This is not a loop

How do we call the part int i = 0 in the code snippet below?

 for (int i = 0; i < 10; i++) {
   System.out.println("Hello");
 }

The increment step
The initialization
The conditional check
The iteration

You wish to generate random numbers until you reach a number that is divisible by 9. What type of loop statement would your require for this?

A do while loop
A for loop
A while loop
You do not need a loop for this

What is the output of the following code snippet?

 for (int i = 0; i < 10; i+=3) {
   System.out.println(i + " ");
 }

0 1 2 3 4 5 6 7 8 9
0 3 6 9 12
0 3 6 9
3 6 9

This is a(n) ...

 while (true) {
   // Do something
 }

endless loop
bug
syntax error
a loop that will never execute

To what does the output of this code snippet refer?

 for (int i = 1; i < 8; i++) {
   if (i % 7 == 0) {
     System.out.print(" ... Ba");
   } else {
     System.out.print("NaN");
   }
 }
 if (5 * 5 >= 25) {
   System.out.print("tm");
 }
 System.out.println("an");

Something important that happened in Belgium
A song of Samson en Gert
The history of the Internet
A movie

What is the last value of i that will be outputted to the terminal?

 int i = 0;
 do {
     System.out.println("i = " + i);
     i += 5;
 } while (i < 88);

0
85
88
90

In which of the situations below could you use a for-each loop?

When you want to print each element from an array to the terminal
When you wish to print each element from an array together with it's index
When you wish to manipulate the values inside an array
When you wish to iterate over multiple arrays

Which construct is preferred in the following situation?

I wish to read a file line by line and stop at the first line that starts with the word "The".

A for loop
A while loop
A foreach loop (enhanced for loop)
A switch case

What is the output of the following piece of code?

int i = 0;
System.out.println("i = " + i + " before for loop");
for (; i < 3; i++) {
  System.out.println(i + ": Hello");
}
System.out.println("i = " + i + " after for loop");

Option A:

i = 0 before for loop
0: Hello
1: Hello
2: Hello
i = 3 after for loop

Option B:

i = 0 before for loop
0: Hello
1: Hello
2: Hello
i = 2 after for loop

Option C:

i = 0 before for loop
0: Hello
1: Hello
2: Hello
3: Hello
i = 3 after for loop

None of the above

What is the problem with the code below (you can safely assume that the necessary imports are made)?

public static void main(String[] args) {
  Scanner console = new Scanner(System.in);

  for (int i = 0; i < 5; i++) {
    System.out.print("Please enter number: ");
    int number = console.nextInt();
    sum += number;
  }

  System.out.println("\nTotal = " + sum);
}

A variable that was not declared
A syntax error
An uninitialized variable
An incorrect datatype for the variable

What construction is depicted below?

A for loop
A while loop
An if statement
An if-else statement

Take the code construct below as a reference. In what order are the different parts of a for-loop executed/evaluated?

for (<Initialization>; <Condition>; <Increment>) {
  // <Code block>
}

Option A

(1) Initialization
(2) Condition
(3) Code block
(4) Increment

Option B

(1) Initialization
(2) Code block
(3) Increment
(4) Condition

Option C

(1) Initialization
(2) Condition
(3) Increment
(4) Code block

Option D

(1) Initialization
(2) Increment
(3) Code block
(4) Condition