Question: Write a java method to take as an input parameter a String and returns true if that String is a doubloon and false otherwise. A

Write a java method to take as an input parameter a String and returns true if that String is a doubloon and false otherwise. A word is said to be a doubloon if every letter that appears in the word appears exactly twice. Here are some example doubloons: mama, papa, noon, sees, intestines, murmur, horseshoer.

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