1Z0-811 Primitives, Strings and Operators Practice Question
Which two of the following are primitive data types in Java? (Choose two)
⚠ Common exam trap
Test-takers frequently confuse wrapper classes (like `Integer`, `Character`) with their corresponding primitive types, especially when the wrapper name closely resembles the primitive name (e.g., `Integer` vs `int`).
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
✓
boolean
`boolean` is a primitive data type in Java that can hold only two values: `true` or `false`. It is not an object and does not have methods, making it a fundamental building block for conditional logic.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
boolean
Why this is correct
boolean is a primitive type.
- ✓
double
Why this is correct
double is a primitive type.
- ✗
Character
Why it's wrong here
Character is a wrapper class.
- ✗
String
Why it's wrong here
String is a reference type.
- ✗
Integer
Why it's wrong here
Integer is a wrapper class, not primitive.
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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. Which two of the following are primitives in Java? (Choose two.)
medium- ✓ A.byte
- ✓ B.char
- C.String
- D.Integer
- E.Boolean
Why A: A is correct because `byte` is a primitive data type in Java that stores 8-bit signed integers, ranging from -128 to 127. It is one of the eight primitive types defined in the Java language specification, not an object or reference type.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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