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  • Changing the Garbage Collector and Tuning Pause Time – Perfectionist Performance Tuning ⚙️

    JAVA 25 SELF
    Level 64, Lesson 1
    Changing the Garbage Collector and Tuning Pause Time – Perfectionist Performance Tuning ⚙️
    1
    Locked
  • Using a Weak Reference — Message in Vanishing Ink 👻

    JAVA 25 SELF
    Level 64, Lesson 2
    Using a Weak Reference — Message in Vanishing Ink 👻
    1
    Locked
  • Cache using WeakHashMap – A Smart Library That Reclaims Forgotten Books 📚

    JAVA 25 SELF
    Level 64, Lesson 2
    Cache using WeakHashMap – A Smart Library That Reclaims Forgotten Books 📚
    1
    Locked
  • Capturing a memory dump with jmap – Bear's digital snapshot 🐻

    JAVA 25 SELF
    Level 64, Lesson 3
    Capturing a memory dump with jmap – Bear's digital snapshot 🐻
    1
    Locked
  • Viewing class statistics with jmap – Digital Zoo Inventory 🐒🐘🐆

    JAVA 25 SELF
    Level 64, Lesson 3
    Viewing class statistics with jmap – Digital Zoo Inventory 🐒🐘🐆
    1
    Locked
  • Not Releasing External Resources – Open Book in the Library 📖

    JAVA 25 SELF
    Level 64, Lesson 4
    Not Releasing External Resources – Open Book in the Library 📖
    1
    Locked
  • Cache bug with HashMap – The Museum That Never Discards Exhibits 🖼️

    JAVA 25 SELF
    Level 64, Lesson 4
    Cache bug with HashMap – The Museum That Never Discards Exhibits 🖼️
    1
    Locked
  • Violation of restrictions in the transport system 🚫

    JAVA 25 SELF
    Level 65, Lesson 0
    Violation of restrictions in the transport system 🚫
    1
    Locked
  • Flexible Notification System 📱

    JAVA 25 SELF
    Level 65, Lesson 0
    Flexible Notification System 📱
    1
    Locked
  • Intelligent Data Analyzer 🔍

    JAVA 25 SELF
    Level 65, Lesson 1
    Intelligent Data Analyzer 🔍
    1
    Locked
  • Pet identification at the shelter 🐾

    JAVA 25 SELF
    Level 65, Lesson 1
    Pet identification at the shelter 🐾
    1
    Locked
  • Number Classifier for Analytics System 🔢

    JAVA 25 SELF
    Level 65, Lesson 2
    Number Classifier for Analytics System 🔢
    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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