EmployeeTest.java 中Eclipse提示异常

import java.util.Date;import java.util.GregorianCalendar;//import EmployeeTest20110906.Employee;public class EmployeeTest {    /**     * @param args     */    public static void main(String[] args) {        // TODO Auto-generated method stub        // fill the staff array with three Employee objects        Employee[] staff = new Employee[3];        //new Employee("James Bond", 100000, 1950, 1, 1);                //Eclipe提示下面三行出错了，我不知道要怎么改正？        staff[0] = new Employee("Carl Cracker", 75000, 1987, 11, 15);        staff[1] = new Employee("Harry Hacker", 50000, 1989, 10, 1);        staff[2] = new Employee("Tony Tester", 40000, 1990, 3, 15);                // raise everyone's salary by 5%        for (Employee e : staff)            e.raiseSalary(5);        // print out information about all Employee objects        for (Employee e : staff)            System.out.println("name=" + e.getName() + ",salary="                    + e.getSalary() + ",hireDay=" + e.getHireDay());    }    class Employee {        public Employee(String n, double s, int year, int month, int day) {            this.name = n;            this.salary = s;            GregorianCalendar calendar = new GregorianCalendar(year, month - 1,                    day);            // GregorianCalendar uses 0 for January            this.hireDay = calendar.getTime();        }        public String getName() {            return this.name;        }        public double getSalary() {            return this.salary;        }        /**         * 不要编写返回引用可变对象的访问器方法，会产生下列问题         * Employee harry = ...;         * Date d = harry.getHireDay();         * double tenYearsInMilliSeconds = 10 * 365.25 * 24 * 60 * 60 * 1000;         * d.setTime(d.getTime() - (long) tenYearsInMilliSconds)         *let's give Harry ten years added seniority多增加了十年的工龄         *          * 措施：先对其克隆再返回         *          * @return         */        /*public Date getHireDay() {            return this.hireDay;        }*/        public Date getHireDay(){            return (Date) this.hireDay.clone();        }                public void raiseSalary(double byPercent) {            double raise = this.salary * byPercent / 100;            this.salary += raise;        }        private String name;        private double salary;        private Date hireDay;    }}

import java.util.Date;import java.util.GregorianCalendar;//import EmployeeTest20110906.Employee;public class EmployeeTest {    /**     * @param args     */    public static void main(String[] args) {        // TODO Auto-generated method stub        // fill the staff array with three Employee objects        Employee[] staff = new Employee[3];        //new Employee("James Bond", 100000, 1950, 1, 1);        //Eclipe提示下面三行出错了，我不知道要怎么改正？        staff[0] = new Employee("Carl Cracker", 75000, 1987, 11, 15);        staff[1] = new Employee("Harry Hacker", 50000, 1989, 10, 1);        staff[2] = new Employee("Tony Tester", 40000, 1990, 3, 15);        // raise everyone's salary by 5%        for (Employee e : staff)            e.raiseSalary(5);        // print out information about all Employee objects        for (Employee e : staff)            System.out.println("name=" + e.getName() + ",salary="                    + e.getSalary() + ",hireDay=" + e.getHireDay());    }}class Employee {        public Employee(String n, double s, int year, int month, int day) {            this.name = n;            this.salary = s;            GregorianCalendar calendar = new GregorianCalendar(year, month - 1,                    day);            // GregorianCalendar uses 0 for January            this.hireDay = calendar.getTime();        }        public String getName() {            return this.name;        }        public double getSalary() {            return this.salary;        }        /**         * 不要编写返回引用可变对象的访问器方法，会产生下列问题         * Employee harry = ...;         * Date d = harry.getHireDay();         * double tenYearsInMilliSeconds = 10 * 365.25 * 24 * 60 * 60 * 1000;         * d.setTime(d.getTime() - (long) tenYearsInMilliSconds)         *let's give Harry ten years added seniority多增加了十年的工龄         *         * 措施：先对其克隆再返回         *         * @return         */        /*public Date getHireDay() {            return this.hireDay;        }*/        public Date getHireDay(){            return (Date) this.hireDay.clone();        }        public void raiseSalary(double byPercent) {            double raise = this.salary * byPercent / 100;            this.salary += raise;        }        private String name;        private double salary;        private Date hireDay;    }