1Z0-811 What is Java Practice Question
What is the primary purpose of Java bytecode?
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
✓
To be executed by the Java Virtual Machine on any platform
Java bytecode is designed to be executed by the Java Virtual Machine (JVM), which interprets or compiles it to native code for the underlying platform, enabling platform independence. Option B is incorrect because bytecode is an intermediate representation that is compiled or interpreted at runtime, not compiled once into native code for reuse across platforms. Option C is incorrect because bytecode is not human-readable source code; it is a binary format. Option D is incorrect because bytecode cannot be directly executed by the operating system; it requires the JVM to run.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
To be executed by the Java Virtual Machine on any platform
Why this is correct
Bytecode is platform-independent and executed by JVM.
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To be compiled into native code once and reused
Why it's wrong here
Bytecode may be JIT-compiled, but it's interpreted initially.
- ✗
To be human-readable source code
Why it's wrong here
Source code is human-readable; bytecode is binary.
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To be directly executed by the operating system
Why it's wrong here
Bytecode requires JVM; OS cannot execute it directly.
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