1Z0-811 Java Basics and Syntax Practice Question
A class defines two methods with the same name but different parameter lists. This is known as:
⚠ Common exam trap
Test-takers frequently confuse method overloading with method overriding because both involve methods with the same name, but overriding requires identical parameter lists and occurs in inheritance, while overloading requires different parameter lists and can occur in the same class.
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
✓
Method overloading
Method overloading occurs when a class defines multiple methods with the same name but different parameter lists (different number, type, or order of parameters). This is a compile-time polymorphism mechanism in Java that allows a method to handle different inputs without changing its name.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Method overriding
Why it's wrong here
Overriding requires same signature in subclass.
- ✗
Method hiding
Why it's wrong here
Hiding applies to static methods.
- ✗
Method shadowing
Why it's wrong here
Shadowing refers to variable scope.
- ✓
Method overloading
Why this is correct
Overloading allows same name, different parameters.
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Same concept, more angles
1 more way this is tested on 1Z0-811
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A class has two methods: void setValue(int a) and void setValue(double a). Which call will result in a compilation error?
medium- A.setValue(5.0);
- ✓ B.setValue(5); setValue(5.0); both in same class
- C.setValue(5);
- D.setValue((int)5.0);
Why B: Since the class contains both overloaded methods void setValue(int a) and void setValue(double a), all the provided calls are valid and compile without error. setValue(5) calls the int version, setValue(5.0) calls the double version, and setValue((int)5.0) explicitly casts to int, calling the int version. Option B consists of two separate valid calls within the same class, so no compilation error occurs. Therefore, none of the options result in a compilation error.
JA
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