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我是一名学生，正在寻找帮助完成作业。这是任务：创建一个CollegeCourse类。该课程包含课程编号（例如“CIS 210”），学分（例如3）和字母等级（例如“A”）等字段。Java将类数组传入数组
包括每个字段的get（）和set（）方法。创建一个包含一个ID号的学生类和一个由五个CollegeCourse对象组成的数组。为学号ID创建一个get（）和set（）方法。还要创建一个返回学生的CollegeCourses之一的get（）方法;该方法接受一个整数参数并返回该位置的CollegeCourse（0到4）。接下来，创建一个set（）方法来设置一个Student's CollegeCourses的值;该方法需要两个参数 - 一个CollegeCourse和一个表示CollegeCourse的位置的整数（0到4）。
我得到了第二个for循环的运行时错误，我试图将数据放入课程数组中。它要求同一行中的CourseID和小时数，并且不管我对它做出什么响应，我收到一个错误，它几乎看起来像试图在同一时间获取所有数组变量。这是我的代码，其中包括三个类。任何帮助我向正确的方向发送我的赞赏，因为我已经花了很长时间已经研究解决。
public class CollegeCourse {
private String courseId;
private int creditHours;
private char grade;
public CollegeCourse(String id, int hours, char grade)
{
courseId=id;
creditHours = hours;
this.grade = grade;
}
public void setCourseId(String id)
{
courseId = id;//Assign course id to local variable
}
public String getCourseId()
{
return courseId;//Provide access to course id
}
public void setHours(int hours)
{
creditHours = hours;//Assign course id to local variable
}
public int getHours()
{
return creditHours;//Provide access to course id
}
public void setGrade(char grade)
{
this.grade = grade;//Assign course id to local variable
}
public char getGrade()
{
return grade;//Provide access to course id
}
}
学生班级
public class Student {
final int NUM_COURSES = 5;
private int studentId;
private CollegeCourse courseAdd;//Declares a course object
private CollegeCourse[] courses = new CollegeCourse[NUM_COURSES];
//constructor using user input
public Student(int studentId)
{
this.studentId=studentId;
}
public void setStudentId(int id)
{
studentId = id;//Assign course id to local variable
}
public int getStudentId()
{
return studentId;//Provide access to course id
}
public void setCourse(int index, CollegeCourse course)
{
courses[index] = course;
}
public CollegeCourse getCourse(int index)
{
return courses[index];
//do I need code to return the courseId hours, grade
}
}
InputGrades类
import java.util.Scanner;
public class InputGrades {
public static void main(String[] args) {
final int NUM_STUDENTS = 2;
final int NUM_COURSES = 3;
Student[] students = new Student[NUM_STUDENTS];
int s;//subscript to display the students
int c;//subscript to display courses
int stId;
int csIndex;
String courseId = "";
int hours = 0;
//String gradeInput;
char grade = 'z';
CollegeCourse course = new CollegeCourse(courseId,hours, grade);//not sure if I am handling this correctly
Scanner input = new Scanner(System.in);
for(s = 0; s<NUM_STUDENTS; ++s)
{
students[s] = new Student(s);
System.out.print("Enter ID for student #" + (s+1) + ":");
stId = input.nextInt();
input.nextLine();
students[s].setStudentId(stId);
for(c=0; c < NUM_COURSES; ++c)
{
csIndex=c;
System.out.print("Enter course ID #" + (c+1) + ":");
courseId = input.nextLine();
course.setCourseId(courseId);
System.out.print("Enter hours:");
hours = input.nextInt();
input.nextLine();
course.setHours(hours);
String enteredGrade = "";
while(enteredGrade.length()!=1) {
System.out.print("Enter grade:");
enteredGrade = input.nextLine();
if(enteredGrade.length()==1) {
grade = enteredGrade.charAt(0);
} else {
System.out.println("Type only one character!");
}
}
course.setGrade(grade);
students[s].setCourse(csIndex, course);
}
}
for(s = 0; s<NUM_STUDENTS; ++s)
{
System.out.print("\nStudent# " +
students[s].getStudentId());
System.out.println();
for(c=0;c<NUM_COURSES;++c)
System.out.print(students[s].getCourse(c) + " ");
System.out.println();
}
}
}
你有什么错误？ – xro7
抛出什么异常？ –
你可以发布错误的完整Stactrace，并可能指出它发生在哪一行？这将有很大的帮助 – Gumbo