Java Loops MCQs with answers Page - 4

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Q. Which is true about a do-while loop?

  • (A) The condition is checked before the loop body
  • (B) It executes the loop body at most once
  • (C) It executes the loop body at least once
  • (D) It is the same as a while loop

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Q. Which loop is entry-controlled in Java?

  • (A) do-while
  • (B) while
  • (C) for
  • (D) both while and for

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Q. How can you create an infinite loop using for?

  • (A) for(;;)
  • (B) for(1;;)
  • (C) for(;;1)
  • (D) for(int i=0;;i++)

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Q. What will the following print?
int x = 5;
do {
System.out.print(x);
} while(x < 5);

  • (A) 5
  • (B) nothing
  • (C) 6
  • (D) infinite loop

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Q. What is the purpose of a loop counter?

  • (A) To create infinite loops
  • (B) To avoid syntax errors
  • (C) To control the number of loop iterations
  • (D) To store results

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Q. How do you skip the rest of a loop and start the next iteration?

  • (A) break
  • (B) return
  • (C) continue
  • (D) goto

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Q. What happens if the loop condition is always true and no break is used?

  • (A) Syntax error
  • (B) Only one iteration
  • (C) Infinite loop
  • (D) Compilation error

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Q. Which loop is ideal for iterating over arrays?

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

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Q. What is the output?
int[] arr = {1,2,3};
for(int i : arr) {
System.out.print(i + " ");
}

  • (A) 123
  • (B) 1 2 3
  • (C) i i i
  • (D) error

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Q. What is the output?
int i = 10;
while(i < 10) {
System.out.println(i);
i++;
}

  • (A) 10
  • (B) Nothing
  • (C) 10 11
  • (D) Infinite loop

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