设计一个台灯类lamp其中台灯有灯泡这个属性java 怎么写

设计一个台灯类lamp其中台灯有灯泡这个属性java 怎么写

你可以参照这个来

public class Department {

private Integer departmentId;

private String departmentName;

public Integer getDepartmentId() {
return departmentId;
}

public void setDepartmentId(Integer departmentId) {
this.departmentId = departmentId;
}

public String getDepartmentName() {
return departmentName;
}

public void setDepartmentName(String departmentName) {
this.departmentName = departmentName;
}

}

import java.util.Date;


public class Employee {

private Integer employeeId;

private String employeeName;

private Date hireDate;

private Department department;

public Integer getEmployeeId() {
return employeeId;
}

public void setEmployeeId(Integer employeeId) {
this.employeeId = employeeId;
}

public String getEmployeeName() {
return employeeName;
}

public void setEmployeeName(String employeeName) {
this.employeeName = employeeName;
}

public Date getHireDate() {
return hireDate;
}

public void setHireDate(Date hireDate) {
this.hireDate = hireDate;
}

public Department getDepartment() {
return department;
}

public void setDepartment(Department department) {
this.department = department;
}

}

public class Lamp{     //灯泡     private String bulb;     public String getBulb() { return bulb;     }     public void setBulb(String bulb) { this.bulb= bulb;     } }