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class Employee{
    private String name;
    boolean equals(Employee other){
        return name.equals(other.name);
    }   
}
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import java.util.Calendar;  
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Date and its subclasses :
java.util.Date
java.sql.Date
java.sql.Timestamp
The calendar and time zone classes :
java.util.Calendar
java.util.GregorianCalendar
java.util.TimeZone
java.util.SimpleTimeZone
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