1Z0-811 Primitives, Strings and Operators Practice Question
Which of the following is a valid Java primitive type?
⚠ Common exam trap
It's easy for candidates to confuse case-sensitive naming (e.g., `Char` vs `char`) or mistake commonly used reference types like `String` and `Integer` for primitives because they are frequently used in everyday coding.
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 one of the eight primitive data types defined in the Java Language Specification (JLS §4.2). It represents a single bit of information with only two possible values: `true` or `false`, and is not an object or a reference type.
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
Correct: boolean is one of the eight primitive types in Java.
- ✗
String
Why it's wrong here
Incorrect: String is a class (reference type), not a primitive.
- ✗
Integer
Why it's wrong here
Incorrect: Integer is a wrapper class for int, not a primitive.
- ✗
Char
Why it's wrong here
Incorrect: the primitive type is 'char' (lowercase), not 'Char'.
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