package com.ch04.StaticTest;

public class StaticTest {

public static void main(String[] args) {

// TODO Auto-generated method stub

Employee[] staff = new Employee[3];

staff[0] = new Employee("Tom", 40000);

staff[0].setId();

staff[1] = new Employee("Dick", 60000);

staff[1].setId();

staff[2] = new Employee("Harry", 60000);

staff[2].setId();

//print out information about all Employee Objects

for(Employee e : staff) {

e.getId();

System.out.println("name= " + e.getName() + ",id= "

+ e.getId() + ",salary=" + e.getSalary());

}

int n = Employee.getNextId(); //call static method

System.out.println("Next available id=" + n);

}

}

class Employee{

private static int nextId = 1;

private String name;

private double salary;

private int id;

public Employee(String n, double s) {

name = n;

salary = s;

id = 0;

}

public static int getNextId() {

return nextId;

}

public static void setNextId(int nextId) {

Employee.nextId = nextId;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public double getSalary() {

return salary;

}

public void setSalary(double salary) {

this.salary = salary;

}

public int getId() {

return id;

}

public void setId() {

id = nextId;

nextId++; //ÓÃÓÚ¼ÆÊýÔ±¹¤Êý

}

public static void main(String[] args) { //unit test

Employee e = new Employee("harry", 50000);

System.out.println(e.getName() + " " + e.getSalary());

}

}