UNIT_03 // course overview
Unit 3: Java Variables
In this unit, we focus on the Java data types that show up constantly in FTC code, from hardware mapping to sensor reads and control calculations. Use Java variables and datatypes in robot code.
6Live Lessons
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Lesson Roadmap
3.1 · String LiteralsLesson 3.1: Using Strings to Match Hardware Names ExactlyOpen3.2 · double PrecisionLesson 3.2: Using double for Motor Power and Precise MathOpen3.3 · boolean FlagsLesson 3.3: Using boolean Values for On-or-Off Robot StateOpen3.4 · int DatatypesLesson 3.4: Using int Values to Count Cycles and RepetitionsOpen3.5 · Challenge: Dynamic PowerLesson 3.5: Challenge: Build Dynamic Power Logic with Multiple VariablesOpenUnit 3 · Mastery QuizUnit 3 Mastery Quiz: Java VariablesOpen
What This Unit Covers
Choose the correct datatype for names, numeric precision, binary state, and whole-number counts.
Avoid common FTC bugs caused by integer truncation or mismatched hardware identifiers.
Use variables as a single source of truth instead of scattering magic values through code.
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