Covers Java 25 LTS. Latest release: Java 27 (Sept 2026).
0 of 8 topics passedKnowledge progress
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- 1Syntax, types and operators0 of 8 answers · pass with 70% over your last 8
- 2Control flow and methods
- 3Classes and objects
- 4OOP: inheritance, polymorphism, interfaces
- 5Strings and arrays
- 6Collections basics (List, Set, Map)
- 7Exceptions
- 8Packages and build tools
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