15.9.2 - Syntax
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Practice Questions
Test your understanding with targeted questions
Define a list that holds integer values using Java generics.
💡 Hint: Think about how to specify the type in the collection.
What would happen if you try to add a string to a List
💡 Hint: Consider the type safety principle of generics.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does List<String> list = new ArrayList<>(); accomplish?
💡 Hint: Consider what data types are allowed in the list.
True or False: Generics allow for type safety in Java before runtime.
💡 Hint: Think about when types are checked in the code.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Create a generic method that swaps two elements in an array. What will be your method signature?
💡 Hint: Consider how you'd swap values in a basic array before applying generics.
How would you define a generic class that can store two elements of any type?
💡 Hint: Think about how to accommodate two different types in the same class.
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