Java为什么会出现这样的错误？

Question

import java.util.*;

public class enrollment {
static String sName;
static int sAge;
static int sID;
static String sAddress;
static String sGender;

enrollment(String sName, int sAge, int sID, String sAddress, String sGender){
    this.sName=sName;
    this.sAge=sAge;
    this.sID=sID;
    this.sAddress=sAddress;
    this.sGender=sGender;
}

public String getSName() {
    return sName;
}

public int getSAge() {
    return sAge;
}

public int getSID() {
    return sID;
}

public String getSAddress() {
    return sAddress;
}

public String getGender() {
    return sGender;
}

public static void main(String[] args) {
    LinkedList<enrollment> studentData = new LinkedList<enrollment>();
    Scanner input = new Scanner(System.in);

    System.out.println("Enter student name");
    sName = input.nextLine();
    studentData.add(sName);

    System.out.println("Enter student age");
    sAge = input.nextInt();
    studentData.add(sAge);

    System.out.println("Enter student ID");
    sID = input.nextInt();
    studentData.add(sID);

    System.out.println("Enter student address");
    sAddress = input.nextLine();
    studentData.add(sAddress);

    System.out.println("Enter student gender");
    sGender = input.nextLine();
    studentData.add(sGender);

    System.out.println(studentData);

    }
}

我正在尝试为一个学校项目制作一个注册程序，该程序需要一个人的姓名、年龄、身份证号码、地址和性别，然后在用户输入所有要求的信息后打印出来。我不明白我做错了什么。我觉得我做的每件事都是对的。我不确定我能做些什么来修复这些错误。导致这些错误的原因是什么？如何修复它们

给出的错误是

The method add(enrollment) in the type LinkedList<enrollment> is not applicable for the arguments (String)
The method add(int, enrollment) in the type LinkedList<enrollment> is not applicable for the arguments (int)
The method add(int, enrollment) in the type LinkedList<enrollment> is not applicable for the arguments (int)
The method add(enrollment) in the type LinkedList<enrollment> is not applicable for the arguments (String)
The method add(enrollment) in the type LinkedList<enrollment> is not applicable for the arguments (String)

at enrollment.main(enrollment.java:44)

Answer 1

首先需要创建注册对象，如

Enrollment enrollment = new Enrollment(" all the contstructor values here");

然后设置“添加到列表”

studentData.add(enrollment);

或者创建setter

Enrollment enrollment = new Enrollment();
enrollment.setSName(input.nextLine());

最后

studentData.add(enrollment);

Answer 2

编译器告诉您不能将字符串和整数放入enrollment列表中。您可能需要创建一个enrollment实例并将其添加到列表中：

System.out.println("Enter student name");
sName = input.nextLine();

System.out.println("Enter student age");
sAge = input.nextInt();

System.out.println("Enter student ID");
sID = input.nextInt();

System.out.println("Enter student address");
sAddress = input.nextLine();

System.out.println("Enter student gender");
sGender = input.nextLine();

enrollment en = new enrollment(sName, sAge, sID, sAddress, sGender);

studentData.add(sGender);

顺便说一句，您违反了Java标准命名约定：也就是说，类名应该以大写字母开头，所以最好使用Enrollment而不是enrollment作为类名