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## Sharing Mutable References

- References to immutable objects can be freely shared
- Don't share mutable references
- Example

      class Employee
      {
         . . .
         public String getName() { return name; }
         public double getSalary() { return salary; }
         public Date getHireDate() { return hireDate; }
         private String name;
         private double salary;
         private Date hireDate;
      }

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