Question

public class Testing{
private String firstName;
private String lastName;
private double salary;
private String subject;
private String highestDegree;
private int years;


public Testing 
(String first, String last, String sub, String degree, double sal, int year)
//constructor being called in the main method.
    {
        lastName = last;
        firstName = first;
        subject = sub;
        highestDegree = degree;
        salary = sal;
        years = year;
    }
public class Hello{

 public static void main(String []args){
    //Part missing
 }
}

我做了setter和getter，我所缺少的是如何在main方法中调用该构造函数。我正在考虑创建一个新的对象，例如Testing in = new Testing（），但我很确定我错过了其他的东西。如果还有更多我可能遗失的事情，请告诉我。我正在学习java。

Answer 1

由于您已定义了自定义构造函数
public Testing (String first, String last, String sub, String degree, double sal, int year)
你不能使用默认的构造函数。

Testing in = new Testing() // Not allowed now

您必须使用构造函数来定义，实例化和初始化类Testing的对象。

public static void main(String []args){
    String first = "userName";
    ...
    ...

    Testing in = new Testing(first, last, sub, degree, sal, year)
}

如何调用方法及其参数？

1 个答案: