我在将字符串作为参数传递给 java 中的预定义构造函数类时不断出错

Question

我正在使用 java 和 javafx (Scenebuilder) 进行此分配，我试图将一些字符串传递给我在其自己的类中定义的构造函数，但即使我正确地遵循所有格式，它也会不断给我错误。请查看图片以供参考。现在为此工作了几个小时 :')

错误：构造函数联系人（字符串，字符串，字符串，字符串）未定义

我的联系人构造文件名为 contact.java（控制器定义的第 9 和 12 行）

public class contact {
    private String FirstName; 
    private String LastName; 
    private String email; 
    private String phonenum; 
    //private String largeImage;
    
    public contact() {
        this("", "", "", "");
    }
    public contact(String firstName, String lastName, String email, String phoneNumber) {
        this.FirstName = firstName;
        this.LastName = lastName;
        this.email = email;
        this.phonenum = phoneNumber;}

    
    public String getFirstName() {return FirstName;}
    public void setFirstName(String FirstName) {this.FirstName = FirstName;}
    public String getLastName() {return LastName;}
    public void setLastName(String LastName) {this.LastName = LastName;}
    public String getemail() {return email;}
    public void setemail(String email) {this.email = email;}
    public String getphonenum() {return phonenum;}
    public void setphonenum(String phonenum) {this.phonenum = phonenum;}
    //public String getLargeImage() {return largeImage;}
    //public void setLargeImage(String largeImage) {this.largeImage = largeImage;}
    @Override
    public String toString() {return getLastName();}
    }

这是我尝试初始化它的地方 contactviewController.java（第 73 行）

    public void initialize() {
        contactcheck.add(new contact("elliot","Mathew","le@","1234"));
        contactListView.setItems(contactcheck);//bind contactlistview to contact check
        
        contactListView.getSelectionModel().selectedItemProperty().addListener(new ChangeListener<contact>() {

            @Override
            public void changed(ObservableValue<? extends contact> arg0, contact oldValue, contact newValue) {
                selectedcontact = newValue;
                firstNameTextField.setText(newValue.getFirstName());
                lastNameTextField.setText(newValue.getLastName());
                emailTextField.setText(newValue.getemail());
                phoneNumberTextField.setText(newValue.getphonenum());
            }
        });
        }
 }

这里是定义可观察列表和联系检查的地方（第 17 行）

请帮助