1Z0-811 Arrays and Methods Practice Question
Given the array declaration: int[] data = new int[5];, what is the value of data[2] after initialization?
⚠ Common exam trap
Oracle often tests the distinction between default values for primitives (e.g., `0` for `int`) versus objects (`null`) and the misconception that array elements are initialized to their index number or left uninitialized.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
0
In Java, when an array of primitive type `int` is created using `new int[5]`, all elements are automatically initialized to the default value for `int`, which is `0`. Therefore, `data[2]` (the third element) holds the value `0` after initialization.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
2
Why it's wrong here
Index 2 is the third element, but no assignment has been made.
- ✓
0
Why this is correct
Default value for int array elements.
- ✗
false
Why it's wrong here
false is default for boolean, not int.
- ✗
null
Why it's wrong here
null is default for object references, not primitives.
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