Help your AP Computer Science A students master Java String methods and object concepts with 20 carefully crafted code tracing problems. String manipulation appears on nearly every AP CS A exam — this worksheet covers it all.

⭐ WHAT'S INCLUDED:

• 20 code tracing exercises across 4 sections
• Section A — length, charAt, substring, indexOf
• Section B — Case methods, equals vs ==, trim
• Section C — Immutability, compareTo, Wrapper Classes
• Section D — parseInt, split, contains & Challenge problems
• Full answer key with explanations — teacher use only

⭐ SKILLS COVERED:

• String methods: length, charAt, substring, indexOf, toUpperCase, toLowerCase, trim, contains, replace
• == vs .equals() for object comparison
• String immutability
• compareTo() for lexicographic ordering
• Wrapper classes: Integer, Double
• Integer.parseInt() and Double.parseDouble()
• Null references

⭐ PERFECT FOR:

• AP CS A Unit 2 practice
• Bell ringers and warm-up activities
• Test and quiz review
• Sub plans
• Homework or independent practice

⭐ DETAILS:

• Grade level: 9–12
• Time: 40–60 minutes
• Format: Printable PDF — works digitally too
• Language: Java
• Answer key included on a separate page

This is Pack 2 of the AP CS A Code Tracing Series. Collect all 10 packs or grab the complete bundle!

PRICE: $4.00

TAGS: AP CS A worksheet, java string methods, AP computer science java, code tracing worksheet, AP CS A unit 2, java substring, java equals vs ==, AP exam practice, computer science high school, java output prediction

PACK 3 — TITLE: AP CS A Boolean Expressions & if Statements — Code Tracing Worksheet | Java | Grades 9–12

DESCRIPTION:

Sharpen your students' ability to evaluate complex boolean expressions and trace through conditional logic in Java. This worksheet covers one of the most tested areas on the AP CS A exam — decision making and logical operators.

⭐ WHAT'S INCLUDED:

• 20 code tracing exercises across 4 sections
• Section A — Comparison & Logical Operators
• Section B — if / else if / else Chains
• Section C — Ternary Operator, Short-Circuit & Scope Traps
• Section D — Edge Cases & AP Exam Challenges
• Full answer key with explanations — teacher use only

⭐ SKILLS COVERED:

• Comparison operators: ==, !=, <, >, <=, >=
• Logical operators: &&, ||, !
• Short-circuit evaluation
• if / else if / else chains
• Ternary operator
• Operator precedence (&& before ||)
• Common trap: no braces after if
• Compile error: = vs == in conditions

⭐ PERFECT FOR:

• AP CS A Unit 3 practice
• Bell ringers and warm-up activities
• Test and quiz review
• Sub plans
• Homework or independent practice

⭐ DETAILS:

• Grade level: 9–12
• Time: 40–60 minutes
• Format: Printable PDF — works digitally too
• Language: Java
• Answer key included on a separate page

This is Pack 3 of the AP CS A Code Tracing Series. Collect all 10 packs or grab the complete bundle!