DeleteByName メソッドでエラーが発生しました。エラーは次のとおりです。
StudentStore 型のメソッド delete(Student) は、引数 (String) には適用されません。
これは、メソッド自体のパラメーターが間違っていることに関係していることはわかっていますが、修正方法がわかりません。そして、その後、学生を実際にテキストファイルから削除することはできません。ストアは Arraylist を使用して作成されます。5 人の学生が宣言されており、add メソッドが機能しています。
これが私のコードです：
メインアプリ
//---------------------------------------------------------------------------------------
// Name: Case 3: Delete by Name.
// Description: Choice 3 gives the user an option to delete an employee by name.
//---------------------------------------------------------------------------------------
case 3:
System.out.println("Delete by Name.");
Student studentDelete = MenuMethods.userInputByName();
details.searchByName(studentDelete.getStudentName());
details.deleteByName(studentDelete.getStudentName());
break;
StudentStore
// ---------------------------------------------------------------------------------------
// Name: DeleteByName.
// ---------------------------------------------------------------------------------------
public boolean deleteByName(Student s)
{
if(students.remove(s))
return students.remove(s);
else
return false;
}
public Student searchByName(String employeeName)
{
Student employee = Student.get(employeeName);
System.out.println(employee);
return employee;
}
// ---------------------------------------------------------------------------------------
// Name: Search by Email.
// ---------------------------------------------------------------------------------------
public String searchByEmail(String studentEmail)
{
for (Student student : map.values())
{
if (student.getStudentEmail().equals(studentEmail)
{
System.out.println(student.getStudentEmail());
return student.getStudentEmail();
}
}
return null;
}
メニューメソッド
//---------------------------------------------------------------------------------------
// Name: Imports.
// Description: To allow the use of different Java classes.
//---------------------------------------------------------------------------------------
import java.util.Scanner;
//---------------------------------------------------------------------------------------
public class MenuMethods
{
private static Scanner keyboard = new Scanner(System.in);
//---------------------------------------------------------------------------------------
// Methods for the Company Application menu.
//---------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------
// Name: getMenuChoice.
// Description: Method for validating the choice.
//---------------------------------------------------------------------------------------
public static int getMenuChoice(String menuString, int limit,String prompt, String errorMessage)
{
System.out.println(menuString);
int choice = inputAndValidateInt(1, limit, prompt, errorMessage);
return choice;
}
//---------------------------------------------------------------------------------------
// Name: inputAndValidateInt.
// Description: This method is used in the getMenuChoice method.
//---------------------------------------------------------------------------------------
public static int inputAndValidateInt(int min, int max, String prompt,String errorMessage)
{
int number;
boolean valid;
do
{
System.out.print(prompt);
number = keyboard.nextInt();
valid = number <= max && number >= min;
if (!valid)
{
System.out.println(errorMessage);
}
} while (!valid);
return number;
}
//---------------------------------------------------------------------------------------
// Name: userInput
// Description: This method is used in the MainApp to give the user capability to enter
// the details when adding details of an employee into the store.
//---------------------------------------------------------------------------------------
public static Student userInput()
{
String temp = keyboard.nextLine();
Student s = null;
System.out.println("Please enter the Student Name:");
String studentName = keyboard.nextLine();
System.out.println("Please enter the Student ID:");
String studentId = keyboard.nextLine();
System.out.println("Please enter the Student E-mail address:");
String studentEmail = keyboard.nextLine();
System.out.println("Please enter the Student telephone number:");
String studentTelephoneNumber = keyboard.nextLine();
return s = new Student(studentName, studentId, studentEmail,studentTelephoneNumber);
}
//---------------------------------------------------------------------------------------
// Name: userInputByName.
// Description: This method is used in the MainApp to give the user capability to search by name.
//---------------------------------------------------------------------------------------
public static Student userInputByName()
{
// String temp is for some reason needed. If it is not included
// The code will not execute properly.
String temp = keyboard.nextLine();
Student s = null;
System.out.println("Please enter the Student Name:");
String studentName = keyboard.nextLine();
return s = new Student(studentName);
}
//---------------------------------------------------------------------------------------
// Name: userInputByEmail
// Description: This method is used in the MainApp to give the user capability to search by email.
//---------------------------------------------------------------------------------------
public static String userInputByEmail()
{
// String temp is for some reason needed. If it is not included
// The code will not execute properly.
String temp = keyboard.nextLine();
Student s = null;
System.out.println("Please enter the StudentEmail:");
String studentEmail = keyboard.nextLine();
// This can use the employeeName's constructor because java accepts the
// parameters instead
// of the name's.
return studentEmail;
}
//---------------------------------------------------------------------------------------
}