我必須實現一個演示如何使用數組對象列表的Java應用程序。我正在使用學生,並且我有一個StudentTest類。我應該可以輸入詳細信息(我已經完成)。我只是不確定如何通過學號來搜索數組列表中的特定對象並打印數組列表。任何提示將非常感謝。搜索數組列表中的特定對象並打印數組列表中的所有對象
到目前爲止的代碼:
package student;
public class Student {
private String studentName;
private String studentNo;
private String email;
private int year;
public Student() {
this.studentName = null;
this.studentNo = null;
this.email = null;
this.year = -1;
}
public Student(String nName, String nNum, String nEmail, int nYr) {
this.studentName = nName;
this.studentNo = nNum;
this.email = nEmail;
this.year = nYr;
}
public void setStudentName(String newStudentName) {
this.studentName = newStudentName;
}
public void setStudentNo(String newStudentNo) {
this.studentNo = newStudentNo;
}
public void setEmail(String newEmail) {
this.email = newEmail;
}
public void setYear(int newYear) {
this.year = newYear;
}
public String getStudentName() {
return studentName;
}
public String getStudentNo() {
return studentNo;
}
public String getEmail() {
return email;
}
public int getYear() {
return year;
}
}
package student;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class studentTest {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
List<Student> Students = new ArrayList();
System.out.println("Enter number of students");
int countStudents = input.nextInt();
for (int i = 0; i < countStudents; i++) {
Student student1 = new Student();
System.out.println("Enter details for student: " + (i + 1));
System.out.println("Enter name: ");
student1.setStudentName(input.next());
System.out.println("Enter Number: ");
student1.setStudentNo(input.next());
System.out.println("Enter email: ");
student1.setEmail(input.next());
System.out.println("Enter year: ");
student1.setYear(input.nextInt());
Students.add(student1);
}
}
}
覆蓋'Student'類的'equals'方法。 –