java - Java中如何在另一个类中调用一个类的参数化构造函数

Question

这个问题已经有答案了:

Calling superclass from a subclass constructor in Java (4 个回答)

已关闭 5 年前。

class Department{

  int dep_id;
  string dep_name;

Department(string dep_id , string dep_name)
{
Scanner input=new Scanner(System.in);
System.out.println("Enter Department ID");
dep_id=input.nextInt();
system.out.println("Enter Department Name");
dep_name=input.nextString();
void Display(){
  System.out.println("Deaprtment ID is : " + dep_id);
  System.out.println("Deaprtment Name is : " + dep_name);
  
}

class Professor extends Person
{         //This person is different class

 string profName;
  Department dept;
 Professor(string profName){
  Scanner input=new Scanner(System.in);
  System.out.println("Enter Professor Name");
   profName=input.nextString();


 }

现在我必须添加名为 dept 且类型为 Department 的数据字段用于初始化用户定义值的两个属性的双参数构造函数如何在教授类中调用系类

Answer 1

希望这能让大家清楚

    class Professor extends Person { // This person is different class

    string profName;
    Department dept;

    Professor(string profName, int dept_id, String dept_name) {
        this.profName = profName;
        dept = new Department(dept_id, dept_name);
    }
}

在主类中使用扫描仪来获取这些输入