These cheatsheets are designed to help you quickly review the key concepts and syntax. You can also print and use them as a study guide for the course!

Java Basics, Printing, and Turtle Graphics¶

• Structure of a Java program
• Printing
• Comments
• Turtle Graphics
• Turtle Methods

Data Types, Expressions, and Operations¶

• Escape Sequences
• Data Types
• Expressions
• Arithmetic Operators
• Relational Operators
• Logical Operators

Variables, Strings, and Debugging¶

• Escape Sequences
• Variables
• Variable Naming Rules & Conventions
• Strings
• String Indexing
• String Methods
• Type Casting

For Loops¶

• The For Loop
• For Loop Control Flow

Nested For Loops, Random, and Constants¶

• Nested For Loops
• Update Statements
• Random Methods
• Fenceposting

Methods and Parameters¶

• Methods
• Class Constants
• Parameters

Math Class and Returns¶

• Math Class
• Returns

Relational/Logical Operators and Conditionals¶

• Relational Operators
• Logical Operators
• if/else Statements
• Conditionals

While Loops, User Input, and Scanner¶

• While Loops
• User Input and Scanner
• Scanner Methods
• Fenceposting

Arrays¶

• Declaring Arrays
• Array Methods

2D Arrays¶

• Declaring 2D Arrays
• 2D Array Traversal