1Z0-811 Object-Oriented Programming Practice Question
A logging utility class keeps track of the number of log entries using a static integer variable. The class is instantiated multiple times in the application. How does the count variable behave?
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
✓
All instances share the same count variable
Static variables are shared among all instances of a class. There is only one copy of the variable, regardless of the number of instances.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Each instance has its own copy of count
Why it's wrong here
Static variables are class-level, not instance-level.
- ✓
All instances share the same count variable
Why this is correct
Correct. A static variable is shared across all instances.
- ✗
count is reset each time a new instance is created
Why it's wrong here
Static variables are initialized once when the class is loaded; they are not reset on instance creation.
- ✗
count cannot be accessed from static methods
Why it's wrong here
Static methods can access static variables without any issue.
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