Questions and Answers
Which utility class provides methods for manipulating collections, such as sorting and shuffling?
Collections
Which concept, introduced in Java 5, allows you to write classes and methods that can work with any data type?
Generics
Which interface provides methods to iterate over a collection and can be used for custom sorting in collections like TreeSet and TreeMap?
Iterator
Which interface in the Java Collections framework allows duplicate elements?
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Which class in the Java Collections framework uses a hash table for storage?
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Which interface in the Java Collections framework is used to hold elements before processing?
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Which class in the Java Collections framework uses a red-black tree for storage?
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Study Notes
Java Collections Framework
- The
Collectionsclass provides methods for manipulating collections, such as sorting and shuffling.
Generics
- Generics, introduced in Java 5, allow you to write classes and methods that can work with any data type.
Iteration
- The
Iteratorinterface provides methods to iterate over a collection and can be used for custom sorting in collections likeTreeSetandTreeMap.
Collection Interfaces
- The
Listinterface in the Java Collections framework allows duplicate elements.
Hash-based Collection
- The
HashSetclass in the Java Collections framework uses a hash table for storage.
Buffering
- The
Queueinterface in the Java Collections framework is used to hold elements before processing.
Tree-based Collection
- The
TreeSetclass in the Java Collections framework uses a red-black tree for storage.
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