1. Write a Java program to associate the specified value with the specified key in a HashMap

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2. Write a Java program to count the number of key-value (size) mappings in a map

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3. Write a Java program to copy all of the mappings from the specified map to another map

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4. Write a Java program to remove all the mappings from a map

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5. Write a Java program to check whether a map contains key-value mappings (empty) or not

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6. Write a Java program to get a shallow copy of a HashMap instance

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7. Write a Java program to test if a map contains a mapping for the specified key

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8. Write a Java program to test if a map contains a mapping for the specified value

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9. Write a Java program to create a set view of the mappings contained in a map

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10. Write a Java program to get the value of a specified key in a map

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11. Write a Java program to get a set view of the keys contained in this map

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12. Write a Java program to get a collection view of the values contained in this map

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13. Write a Java program to Checking duplicate key insertion in HashMap

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14. Write a Java program to how to use remove() method in HashMap

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15. Write a Java program to how to use replace() method in HashMap

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16. Write a Java Program to get value from HashMap when the key is provided

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17. Write a Java program to create a HashMap to store Key/Value pair

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18. Write a Java program to get keys from a HashMap collection

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19. Write a Java program to get all the values from a HashMap collection

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20. Write a Java program to get the size of the HashMap collection

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21. Write a Java program to check whether a HashMap contains a specified Key or not

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22. Write a Java program to check whether a HashMap contains a specified value or not

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23. Write a Java program to get the value based on the key from a HashMap collection

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