java - 如何制定一个让员工老一岁的方法？

Question

我刚刚开始学习 Java 编程。这意味着，我对 Java 还是完全陌生的。

我有一些代码，我应该在其中创建一个名为birthday()的方法，使员工老一岁，然后显示员工的新年龄。

我有一个名为 Employee.java 的类和一个名为 EmployeeApp.java 的类。

Employee.java 代码如下所示:

package model;

public class Employee {

    private String name;
    private boolean trainee;
    private int age;


    public Employee(String inputName, int inputAge) {
        name = inputName;
        age = inputAge;
        trainee = true;
    }


    public void setName(String inputName) {
        name = inputName;
    }

    public void setAge(int inputAge) {
        age = inputAge;
    }


    public String getName() {
        return name;
    }


    public int getAge() {
        return age;
    }

    public int birthday() {
        agePlusOne = age + 1;
    }

    public void setTrainee(boolean isTrainee) {
        trainee = isTrainee;
    }


    public boolean isTrainee() {
        return trainee;
    }

    public void printEmployee() {
        System.out.println("*******************");
        System.out.println("Name: " + name);
        System.out.println("Trainee: " + trainee);
        System.out.println("Age: " + age);
        System.out.println();
    }
}

EmployeeApp.java 代码如下所示:

 package model;

 public class EmployeeApp {

   public static void main(String[] args) {
        Employee e1 = new Employee("Hans Jensen", 23);
        e1.printEmployee();
        Employee e2 = new Employee("Rasmus Nielsen", 32);
        e2.printEmployee();

   }

}

如有任何帮助，我们将不胜感激! :-)

Answer 1

public int birthday() {

        return age++;
}

在此之后，在 printEmployee() 方法中添加一行代码 System.out.println("Age+1: is"+birthday());)

完整代码:

public void printEmployee() {
        System.out.println("*******************");
        System.out.println("Name: " + name);
        System.out.println("Trainee: " + trainee);
        System.out.println("Age: " + age);

        System.out.println("Age+1: is"+birthday());//add this line
        System.out.println();
    }