1Z0-811 Java Basics and Syntax Practice Question
Which THREE are primitive data types in Java? (Choose three.)
⚠ Common exam trap
Oracle often tests the distinction between primitive types and their corresponding wrapper classes, as candidates frequently mistake `Integer` or `String` for primitives because they are commonly used and have similar names.
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
✓
double
`double` is one of the eight primitive data types in Java, used to represent double-precision 64-bit IEEE 754 floating-point numbers. Primitives are predefined by the language and stored directly in stack memory, not as objects.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
double
Why this is correct
Correct: double is a primitive type.
- ✗
Integer
Why it's wrong here
Integer is a wrapper class, not primitive.
- ✓
boolean
Why this is correct
Correct: boolean is a primitive type.
- ✓
int
Why this is correct
Correct: int is a primitive type.
- ✗
String
Why it's wrong here
String is a class, not primitive.
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