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DictionaryUsingHashMap.java

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import java.util.HashMap;

import java.util.Map;

public class DictionaryUsingHashMap {

private final Map<String, String> dictionary;

public DictionaryUsingHashMap() {

dictionary = new HashMap<>();

}

public void addWord(String word, String definition) {

dictionary.put(word, definition);

}

public void updateWord(String word, String newDefinition) {

if (dictionary.containsKey(word)) {

dictionary.put(word, newDefinition);

} else {

System.out.println("Word not found in the dictionary.");

}

}

public String searchWord(String word) {

return dictionary.getOrDefault(word, "Word not found in the dictionary.");

}

public static void main(String[] args) {

DictionaryUsingHashMap dict = new DictionaryUsingHashMap();

dict.addWord("AI", "Artificial Intelligence");

System.out.println(dict.searchWord("AI")); // Prints: Artificial Intelligence

dict.updateWord("AI", "Advanced Intelligence");

System.out.println(dict.searchWord("AI")); // Prints: Advanced Intelligence

}

}