AP CSA Unit 2.2: Boolean Expressions and Logical Operators Practice
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Unit 2, Section 2.2
Day 2 Practice • January 8, 2026
🎯 Focus: Boolean Expressions
Practice Question
Consider the following code segment:
int x = 7;
int y = 10;
boolean a = x < y;
boolean b = x == 7;
boolean c = a && b;
System.out.println(c);What is printed as a result of executing this code segment?
What This Tests: Section 2.2 covers Boolean expressions—expressions that evaluate to true or false. This question tests relational operators (<, ==) and the logical AND operator (&&).
Key Concept: Boolean Operators
// Relational operators (compare values)
< // less than
> // greater than
<= // less than or equal
>= // greater than or equal
== // equal to (note: TWO equals signs)
!= // not equal to
// Logical operators (combine booleans)
&& // AND: true only if BOTH are true
|| // OR: true if EITHER is true
! // NOT: flips true↔falseStep-by-Step Trace
| Line | Expression | Evaluation | Result |
|---|---|---|---|
| 3 | a = x < y | 7 < 10 | true |
| 4 | b = x == 7 | 7 == 7 | true |
| 5 | c = a && b | true && true | true |
AND Truth Table
| a | b | a && b |
|---|---|---|
| true | true | true |
| true | false | false |
| false | true | false |
| false | false | false |
Remember: AND (&&) requires BOTH to be true!
Common Mistakes
Mistake: Answer C or D (1 or 0)
Java booleans print as "true" or "false", not 1 or 0. Unlike some other languages, Java distinguishes between boolean and integer types.
Mistake: Using = instead of ==
Single equals (=) is assignment. Double equals (==) is comparison. x == 7 checks if x equals 7.
Related Topics
- Section 2.3: if Statements (using boolean conditions)
- Section 2.5: Compound Boolean Expressions
- Section 2.6: Equivalent Boolean Expressions
Difficulty: Medium • Time: 2-3 minutes • AP Skill: 2.B - Determine boolean results
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