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  • Virtual Canvas: Variety of Shapes 🎨

    JAVA 25 SELF
    Level 23, Lesson 3
    Virtual Canvas: Variety of Shapes 🎨
    1
    Locked
  • Smart Home: Boiling Kettle 💡

    JAVA 25 SELF
    Level 23, Lesson 3
    Smart Home: Boiling Kettle 💡
    1
    Locked
  • IT Company: Programmer who works and reports 👨‍💻

    JAVA 25 SELF
    Level 23, Lesson 3
    IT Company: Programmer who works and reports 👨‍💻
    1
    Locked
  • Tidying up messy running code 🧹

    JAVA 25 SELF
    Level 23, Lesson 4
    Tidying up messy running code 🧹
    1
    Locked
  • Clear names for a clearer system 💬

    JAVA 25 SELF
    Level 23, Lesson 4
    Clear names for a clearer system 💬
    1
    Locked
  • Tax rate: No more "magic numbers"! 💸

    JAVA 25 SELF
    Level 23, Lesson 4
    Tax rate: No more "magic numbers"! 💸
    1
    Locked
  • Ideal structure for your product 📦

    JAVA 25 SELF
    Level 23, Lesson 4
    Ideal structure for your product 📦
    1
    Locked
  • Unraveling Exception Mysteries: Parent Hierarchy

    JAVA 25 SELF
    Level 24, Lesson 0
    Unraveling Exception Mysteries: Parent Hierarchy
    1
    Locked
  • Who's in Charge? The Difference Between Exceptions and Errors

    JAVA 25 SELF
    Level 24, Lesson 0
    Who's in Charge? The Difference Between Exceptions and Errors
    1
    Locked
  • Alerting System: Checked and Unchecked Threats

    JAVA 25 SELF
    Level 24, Lesson 0
    Alerting System: Checked and Unchecked Threats
    1
    Locked
  • Robot Librarian and its "rescue plans"

    JAVA 25 SELF
    Level 24, Lesson 0
    Robot Librarian and its "rescue plans"
    1
    Locked
  • Game Gatekeeper: Player Score Check

    JAVA 25 SELF
    Level 24, Lesson 1
    Game Gatekeeper: Player Score Check
    1
    Locked
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CodeGym CodeGym is an online course for learning Java programming from scratch. This course is a perfect way to master Java for beginners. It contains 1200+ tasks with instant verification and an essential scope of Java fundamentals theory. To help you succeed in education, we’ve implemented a set of motivational features: quizzes, coding projects, content about efficient learning, and a Java developer’s career.
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Programmers Are Made, Not Born © 2026 CodeGym