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    3 Questions on Java !!! public variable or bean-style access

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    Suppose that you need a FullName class, which will contain a person's first name and last name. There are two different ways of implementing this.

    A. The public variable version:

    class FullName
    public String first;
    public String last;

    B. The bean-style accessor version:

    class FullName
    private String first;
    private String last;

    public String getFirst() { return first; }
    public void setFirst(String s) { first = s; }

    public String getLast() { return last; }
    public void setLast(String s) { last = s; }


    1. What are the benefits of using the public variable version?

    2. What are the benefits of using the bean-style accessor version?

    3. Add a constructor to your preferred version, that takes two String parameters and initializes first and last.

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