The put method inserts a key-value pair into the table. I think I am on the right track but this is giving a NullPointerException on table[index]. Note that the hash table is open: in the case of a "hash collision", a single bucket stores multiple entries, which must be searched sequentially. It uses two separate hash functions: hash1 and hash2. One such strategy is double hashing, which offers an elegant solution to collisions by incorporating two hash functions. Let’s discuss how we can avoid casting an instance of type HashMap<String, Object>. , m – 1}. This project includes single hasing, double hashing and chain hashing. . Jul 11, 2025 · Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school education, upskilling, commerce, software tools, competitive exams, and more.

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