Java Array Manipulation and Iteration Quiz

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Questions and Answers

How do you identify the length of a Java array?

  • Using the length() method (correct)
  • Accessing the 'size' attribute of the array
  • Determining the number of rows in the array
  • Counting the number of elements in the array

In Java, how do you change the value of an element in an array using its index number?

  • arrayName.set(index, newValue);
  • modify(arrayName, index, newValue);
  • newValue = arrayName.get(index);
  • arrayName[index] = newValue; (correct)

What is the correct way to access the value of an element in a Java array using the index number?

  • fetchValue(arrayName, index);
  • arrayName[index]; (correct)
  • get(arrayName, index);
  • arrayName.getElement(index);

Which of the following is a correct way to iterate through elements in a single-dimensional Java array?

<p>Using a 'for' loop with the index as the control variable (B)</p> Signup and view all the answers

What happens if you try to access an index outside the bounds of a Java array?

<p>It will result in an ArrayIndexOutOfBoundsException (A)</p> Signup and view all the answers

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