The correct answer is that compilation fails. This occurs because the code attempts to call a method, `print()`, on an object of the `Document` class, yet that class does not define or inherit any such method. In Java, the compiler strictly enforces that every invoked method must be declared in the referenced class or one of its superclasses; if the method signature is missing, the compiler immediately throws a compilation error for an undefined method. On the Oracle Java Foundations 1Z0-811 exam, this concept tests your understanding of method resolution and compile-time checking, often appearing as a trick where a method name looks plausible but is not actually defined. A common trap is assuming that a method exists because it sounds familiar, like `print()`, but without a declaration, the code will never run. Remember the mnemonic: "No declaration, no compilation"—the compiler cannot guess what you intended to call.
1Z0-811 Object-Oriented Programming Practice Question
This 1Z0-811 practice question tests your understanding of object-oriented programming. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
Refer to the exhibit.
interface Printable {
default void print() { System.out.println("Printable"); }
}
interface Showable {
default void print() { System.out.println("Showable"); }
}
class Document implements Printable, Showable {
// no override
}
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Compilation fails
The code fails to compile because the class `Document` does not have a `print()` method defined. In Java, you can only invoke methods that are declared in the class or inherited from its superclass. Since no such method exists, the compiler issues an error.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Printable
Why it's wrong here
No implicit selection; conflict must be resolved.
✗
Runtime exception
Why it's wrong here
Compilation error occurs before runtime.
✓
Compilation fails
Why this is correct
Document must override print() to resolve conflict.
Related concept
Read the scenario before looking for a memorised answer.
✗
Showable
Why it's wrong here
No implicit selection; conflict must be resolved.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Oracle often tests the distinction between compilation errors and runtime exceptions, tricking candidates into thinking a missing method will cause a runtime error rather than a compile-time failure.
Detailed technical explanation
How to think about this question
In Java, method resolution is performed at compile time based on the declared type of the reference. If the method is not found in the class hierarchy, the compiler reports a 'cannot find symbol' error. This ensures type safety and prevents runtime errors from missing methods. Real-world scenarios include forgetting to import a library or mistyping a method name.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 1Z0-811 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Object-Oriented Programming — This question tests Object-Oriented Programming — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Compilation fails — The code fails to compile because the class `Document` does not have a `print()` method defined. In Java, you can only invoke methods that are declared in the class or inherited from its superclass. Since no such method exists, the compiler issues an error.
What should I do if I get this 1Z0-811 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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