Java Loops MCQs with answers Page - 6

You will find multiple-choice questions (MCQs) related to #Java Loops here. Go through these questions to prepare effectively for your upcoming exams and interviews.

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A

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Q. Which of the following loops is best for traversing elements in a collection?

  • (A) for
  • (B) while
  • (C) do-while
  • (D) for-each

A

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Q. Which condition will make this loop run forever?
while(?)

  • (A) i > 0
  • (B) true
  • (C) i != 0
  • (D) false

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Q. What does the following code print?
for (int i = 5; i > 0; i--) {
System.out.print(i);
}

  • (A) 54321
  • (B) 12345
  • (C) 5
  • (D) error

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Q. What is printed by this loop?
int i = 0;
while (i < 3) {
System.out.print(i);
i++;
}

  • (A) 012
  • (B) 123
  • (C) 234
  • (D) 321

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Q. Which type of loop should be used when the number of iterations is not known beforehand?

  • (A) for
  • (B) while
  • (C) do-while
  • (D) switch

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Q. Which is the correct syntax of a for-each loop?

  • (A) for(int i: array)
  • (B) for i in array
  • (C) foreach(int i in array)
  • (D) for each(int i; array)

A

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Q. Which loop is most readable for running a counter from 1 to 10?

  • (A) for
  • (B) while
  • (C) do-while
  • (D) for-each

A

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Q. What happens when a continue statement is used inside a loop?

  • (A) Terminates the loop
  • (B) Skips the current iteration
  • (C) Exits the program
  • (D) Repeats the current iteration

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Q. How many times will this loop execute?
for (int i = 0; i < 10; i += 3)

  • (A) 3
  • (B) 4
  • (C) 5
  • (D) Infinite

A

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Q. What is the effect of an empty loop body?

  • (A) Throws exception
  • (B) Does nothing per iteration
  • (C) Causes infinite loop
  • (D) Is illegal

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