Question 321 of 513
1Z0-829 Utilizing Java Object-Oriented Approach Practice Question
A class `Account` has a method `public void deposit(double amount)`. Which approach correctly demonstrates method overloading?
⚠ Common exam trap
Many candidates confuse method overloading with method overriding, or mistakenly believe that changing the return type or access modifier alone is sufficient for overloading, when in fact only the parameter list matters.
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
✓
Adding a method `public void deposit(int amount)`
Method overloading requires methods to have the same name but different parameter lists. Changing the parameter type from `double` to `int` satisfies this requirement, allowing the compiler to distinguish the methods at compile time based on the argument type.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Adding a method `public void deposit(int amount)`
Why this is correct
Different parameter type overloads correctly.
- ✗
Adding a method `public void deposit(double amount)` with different implementation
Why it's wrong here
Identical signature is not allowed; duplicate method.
- ✗
Adding a method `public int deposit(double amount)`
Why it's wrong here
Only changing return type does not overload; it will cause a compile error.
- ✗
Adding a method `protected void deposit(double amount)`
Why it's wrong here
Changing access modifier alone is not overloading.
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Last reviewed: Jun 25, 2026
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